Field notes and maps from Glass Mountains, West Texas, 1963a

ID: SIA RU007318


Form/Genre: Fieldbook record

Date: 1963

Citation: G. Arthur Cooper Papers, 1923-1993 and undated

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Cooper, G. Arthur (Gustav Arthur) 1902-


This field book documents Cooper's paleontological and geological field work in Glass Mountain, West Texas from 26 April to 4 June 1963. Cooper describes stratigraphy of sites visited (with sketches and measurements of some layers) and notes fossils found or commonly found at various levels. Various genera of brachiopoda and sea urchin, bryozoa (moss animals), fusulinids, and possibly other types of fossils were found. Fossils possibly from lower Permian epoch. Locations include but are not limited to Wolf Camp Hills, Dugout Mountain, Gilliland Canyon, Lenox Hill, Montgomery Ranch, Victorio Canyon, Windmill Hill, and Leonard Mountain. The maps contain alphanumeric codes corresponding to a locality. Cooper uses these codes throughout his notes to refer to localities. Some coordinates are included. Pages 0895-0984.

Date Range


Start Date

Apr 26, 1963

End Date

Jun 04, 1963

Access Information

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  • Geology
  • Paleontology


  • United States
  • Wolf Camp Hills
  • Gilliland Canyon
  • Windmill Hill
  • Lenox
  • Leonard Mountain
  • Victorio Canyon
  • Glass Mountains
  • Texas
  • Dugout Mountain


  • Fieldbook record
  • Field notes
  • Maps

Accession #

SIA RU007318

Collection name

G. Arthur Cooper Papers, 1923-1993 and undated

Physical Description

1 field book

Physical Location

Smithsonian Institution Archives


Box 35 Folder 11

1963 [[centered]] [[page contains squiggly line ink pen marks and marginal math calculations]] 300' in 2100 100' in 700' 1' in 7' 4870 4570 ---- 300' 1/7 .1425 275 55 [[/margin calculations]]
[[pencil drawing of a curved line with X]] [[end of page]]
Index 1963 Block register 984 Cibolo ranch 976 D- Ranch, Guadalupes 980 Dugout Mtn. 959 Dugout Mtn., S. side 962 Fossil bed of King 951 Gilliland Canyon, E side 925 Gilliland Canyon, W side 920 Hess Ranch Horst 945, 950 Hess Ranch Horst (hill 5305) 939, 969 Hill 4920 911 Hills E of Windmill Hill 912 Hill W of Iron Mtn 914 Hill NE of Hess Ranch 935 Hill NW of Hess Ranch 935 Hill NW of Hess Ranch (small knob) 968 Igneous dike, Hess Ranch 933 Lenox Hills shale 970, 973 Lenox Hills (hill 5300) 971 Lenox Hills (spur E end) 902 Lenox Hills (S end bioherms) 943, 947 Leonard #2 919, 971 Leonard Mtn. N end 929, 945 Locality 708 938 Locality 726o 946 Montgomery Ranch 975 Neal Ranch, Hess R. Horst 950 Old Word Ranch 952 Seven Heart Gap 980 Split Tank 955 Three-Mile Mtn. 979 Victorio Peak 979 Windmill Hill 905, 909, 944 Wolf Camp Hills 966 Word north of 702c 950 Bioherm in ss - Sullivan Pk 974 [[end of page]]
A [[stamped]] 0895 [[/stamped]] [[folded topographic map with text on back side]] [[end of page]]
A [[stamped]] 0895 [[/stamped]] [[unfolded topographic map of area around Decie Ranch with approximate north-south section labelled line of Wilde section. The section has been located north of a ranch trail, with the following locations marked with an "x": 729e, 727y[[subscript]]1[[/subscript]]z, 729a, 729b, 729c and 729d]]
4801 105 ----- 4696 38 ----- 58 [[end of page]]
[[stamped number]] 896 [[/stamped number]] [[image - topographic map with numerous hand-written locality annotations. Several annotations appear to have been pencilled then overwritten in black ink]] [[note on upper part of map]]Be sure to correct this locality[[end note]]
[[sketch of rock layers and a geometric figure]] 15 - 20 Sh ------------ bio ---------- ----------- B* ----------- [[end of page]]
[[stamped]] 0897 [[/stamped]] [[topographic map of Glass Mountain near Willis Ranch and Hess Canyon with various sites marked]] 4972 55 ---- 5816 5150 ---- 666 280 ---- 946 [[end of page]]
[[indistinct stamped number]] 897 [[/indistinct stamped number]] [[image - topographic map showing locations of Willis Ranch and Hess Ranch, with Hess Canyon indicated. Several localities are annotated in black and red ink.]] [[numerical annotations near bottom center of map]] 50 250 150 ---- 450 to summit
[[stamped number]] 0898 [[/stamped number]] [[image - topographic map affixed to notebook page showing location of Old World Ranch and Wolf Camp Hills. Several locations are annotated on the map.]] [[right margin note]] See Map with King numbers (1945) [[/right margin note]]
[[stamped]] 0899 [[/stamped]] [[Topographic map of Cathedral Mtn. and Sullivan Ranch with sites marked in ink.]]
[[sketch of rock layers showing two layers separated by a wedge of a third unit]] LI Sh DR
[[Topographic map of Dugout Mtn and Dugout Creek including Old Payne Ranch and Arnold Ranch with site locations marked in pen. Math calculations in margin]] 4360 215 75 ---- 140' 90 53 --- 37 32 58 27 63 90 37 [[end of margin calculations]]
[[Hand drawn sketch]]
[[stamped]] 0801 [[?]] [[/stamped]] [[Topographic map including Gilliland Canyon and Ainsleys Cabin with sites marked in pen]] [[Numbers and some calculations in margin]] 61 5 5200 52 38 90 64 70 53 66 5750 4750 ---- 1000 4750 502[[?]] [[end margin numbers]]
902 [[strikethrough]]1301[[/strikethrough]] [[circled]] 1 [[/circled]] [[margin calculations]] 4750 228 ---- 4512 135 5 --- 175 15 --- 190 38 --- 228 [[end margin calculations]] April 26 Spur at E end Lenox Hills From top of Decie R. to base of Sullivan Peak on end of spur is 228', top of Decie Ranch Thus at 4512' at base of spur. Poplar tank is 24 steps = 130' thick. Slope mostly covered. The extreme nose is 38' under the knob at 4750.' The knob at end is almost certainly faulted down about 38' from highest part of spur. The Sullivan Peak is about 60' but this is not the full thickness. Coscinophora seen on west slope top knob. On N slope of spur, about 200 yds east of high hill, surface of SP has large number of finger like sponges. Patches of Cathedral Mtn. appear on the N side of spur near The main hill. Roll 1 - 26 sponges in top of S.P. 27 patch of Cathedral Mtn in open [[margin]] A26[[superscript]] 1 [[/superscript]] Fossils from SP = A26[[superscript]] 1 [[/superscript]] 722m [[/margin]] Section from top of DR to top of main hill at knob 5250 (unmarked) 34 handlevel steps between top of D.R & base of S.P. Poplar tank thus equals 184' of slope. SP= lowest 8 H. L. steps are [[end of page]]
[[Sketch of rock column]] *A26 [[superscript]] 2a [[/superscript]] |----------------------|--| | 65' of bituminous ls | | * |----------------------| |} CM | 87' shale | | |----------------------|--| | SP = 108' | 414' | ---------------------| | PT = 184' | 444 | ---------------------|4706' DR | | [[end of page]]
903 [[circled]]2[[/circled]] [[margin calculations]] 5250 444 ---- 4706 [[this appears incorrect]] 410 34 ---- 100 [[/margin calculations]] massive calcarenite with numerous Spyridiophora in chert bands. At 8 - 9 comes a cgl band of 2 - 3' and at base 6 - 8" of shaly material like the PT below. Top of 12 the massive calcarenite became mealy calcarenite rock with big crinoid stems, many sponges & algae. Dip & strike top of SP N67[[degree symbol]]E 10[[degree symbol]]N SP=20HL = 108 feet of slope. Handlevelling continues to first knob 5250' Section above SP A26[[superscript]] 2 [[/superscript]] 16 HL steps = 87 feet of slope all in yellow to pink silty shale characteristic of the Cathedral Mtn base. A26[[superscript]]2a[/[superscript]] 8HL in knob of bituminous limestone in blocks of 4 - 6" thickness and with goniatites [[margin]]HL steps [[/margin]] 8 - 9 is in shaly beds 9 - 12 to summit in bituminous ls. Total HL from top of DR to top of knob is a total of 82 HL steps = 444'. This puts top of DR at 4706'. The ls on top of the knob is undoubtedly King's Leonard 3 - 4 [[margin]] CM=28 SP=20 PT=34 _____ 82 [/[margin]] Picture 28 = knobs A26[[superscript]]3[[/superscript]] showing color change of CM above Sull. Peak member [[end of page]]
904 [[circled]] 3 [[circled]] A26[[superscript]]3[[/superscript]] -Knob on North is 12 HL steps above the SP which puts the SP-CM contact at 4835. There are here 65' of Cathedral Mtn in top part of knob. Contact of CM & SP at this point. The latter is smooth surfaced calcanite. Latter is hard fine-grained ss of undetermined thickness (a foot or 2) The southeast nose of A26' is mostly biohermal, blush, smooth ls. with Geyerella Heliospongia (large) about 3" diameter). This biohermal part faces the first gully W of the road. Rock contains many large crinoid stems up to 2" in diameter From upper part of SP (A26^1) collected biohermal material with some assemblage lithology etc as 708e. [[end of page]]
905 [[encircled]] 4 [[/encircled]] Windmill hill Shale chips & Dimple ls up to about 4650' on slope on SW side Typical WC float seen at about 4700' on slope just below western knob. Not in place but alot of it. At this point there is considerable soft shale in the float. WC float up to about 4725. In ravine under westernmost saddle are 50' of conglomerate, with sparse pebbles and much sand and silt in lower part but becoming thickly crowded with pebbles in upper half. The pebbles are mostly small to 3 or 4 inches in diameter. Some pebbles of ls. but those are subordinate. Pebbles of ls with fritos algae present but rare. Fossils seen are bryozoa, crinoid stems (small), fenestellids & echinoid spines. Saw no fusulines The WC with fusulines mentioned above must be under this band The Scacchinella beds to the saddle measure 44 feet thick The saddle is at about 4800' and the base of the WC cgl is thus at 4710' [[end of page]]
906 [[circled]]5[[/circled]] [[margin note]] Geyerella A26⁴ =722o [[/margin note]] Handlevelling west knob of WM hill from saddle 0-5 to top of shale = 26' of slope 5-28 to very top of hill, = 125 feet of section. This makes the top of the hill 4941' so that the reading from the map 4950 is o.k. A26⁵ about 1/4 mile N down slope from high knob a thin patch of Cathedral Mtn. in a swale in the S.P. [[left margin]] 4780 154 ---- 4924 [[/left margin]] A26⁶ From north saddle up section in Cathedral Mtn. Section begun at 4780'. Dip & strike N50E 12°N. 9HL- 0-50' is all yellow-pink sandy shale with little or no limestone 2HL 50-62- Platy ls, Thin beds, bituminous 13 HL 62-127' massive light brown dolomite 2HL 127-139' sandy shale 2H.L+3' 139'-154' to top of knob which is thus at 4924 but the plateau top is given at 4900' The lower dolomite contains scattered pebbles and some poorly preserved fossils, bryzoa [[end of page]]
907 [[encircled]] 6 [[/encircled]] [[left margin vertical]] Fossils collected 722 m = A26^7 [[/left margin vertical]] This also has many goniatites. This rock reminds of that on Knob 1262. A 26^7 - Wolfcamp. blocks concentrated 50 feet below the base of the main ledge of the Skinner Ranch (D.R.) Characteristic yellow brown with many fusulines. The windmill is at 4550 and the top of the West float block with many sponges at top is 98 feet above at 4648 = 4650 The WC blocks are 92' above top of knob at 4742'. The base of the Scacchinella beds is 50' higher at 4792' = 4800'. The day's work confirmed the views regarding the constitution of the spur and the nose of the hill just west of it. The spur consists of DR at bottom of hill at 4512'. Three Knobs are evident on spur, the median or the highest, the two easternmost have only a partial section. The western one near the main hill has a large patch of Cathedral Mtn on it
908 [[encircled]] 7 [[/encircled]] The section up the nose of the hill on east end Lenox Hills shows the SP with a vertical section of 108'. The SP seems to thicken east to end of hill where a big biohermal mass appears which has the same fossils as 708e. The easternmost knob of this hill with crest at 5250 contains 87' vertical of yellow shale and 65' vertical of bituminous limestone having goniatites. This is same I think as north end of Windmill Hill. The shale of PT pinches out in Windmill hill but it is possible that the lower Scacchinella beds do also. Not possible to get any consistent dips on displaced blocks on W side Windmill hill. The beds are all very massive and seem to be a great jumble. The fact that a WC cgl can be traced under displaced block indicates that the base of the west block is Decie Ranch member. [[end of page]]
909 [[encircled]] 8 [[/encircled]] April 27 Went to Alpine for box. First to knob in east side Windmill Hill. On close examination this appears to be another of the slipped blocks. The east slope of the hill has an aggregation on different types. The west slope or short side has some recognizable beds with Wolfcamp at base, followed by some beds with silicious skins and containing Spyridiophora. The upper part is calcarenite or biohermal beds, quite massive. It is all Skinner ranch but no normal sequence is recognizable Went up east knob Windmill hill At about 4750' came sandy cgl with scattered pebbles. The following sect made by REG {40' covered to base of Sk R. {13 tan - olive sh. Vertical measures{{13' chert pebble cgl. light colored matrix {17' covered { 5' rust coarse {30' yellow sandy cgl. base of Sk R at about 4868. To of Sk R on east knob mostly calcarenite, fine - grained and with some cgl. Shubertellas, Entelates. Small coll. at 722q
910 [[encircled]] 9 [[/encircled]] Hill 4920 - on N. side spur 0-8HL to top of SKR. All massive limestone. Some cgl. 8-11 Cherty & Shaly beds with thick bands of ls. at top of 11 comes a layer full of goniatites 11-13 - More ls & goniatites capped by a 3' band of ls. 13-15 - Covered shale slope. 15-18 - Shale & ls 18-20 - Massive cgl. calcarenite 20-28 - Shale slope of typical Leonard shale. 28-39 - Shale in thin beds between limestone layers. 39-52 heavy bedded sparsely fossiliferous ls. with goniatites Some beds of fossil "hash". Upper surface with many goniatites A27 Contact of SP SKR [[right bracket]] and CM is in road & stream 1000' (400 paces) from Sullivan Ranch road. 723j large fusulines from (40' vertical) below top of SP.
911 [[encircled]] 10 [[/encircled]] [[left margin]] 707b must be in Leonard # 3-4 [[/left margin]] Data on 722g should be changed. As located here it is in wrong gully. It is second gully north of main ridge east of Sullivan Peak Saw no blocks to collect here At 723j we saw Spyridiophora and Scacchinella. These beds are clearly the SP member but are only at base of hill, their top 400 paces west of the road. My collections from farther up this road from 707B (check) must belong in the Cathedral Mtn. formation. Send Wedins picture of Glass Mtn. fossils. Did not recognize any separate layers of the limestone of the Cathedral Mtn on hill 4920. The whole hill except the SE base is Cathedral Mtn. The lower part of the CM is not so shaly as in the knobs to the south and the basal part has much more limestone. We saw no Institella in this hill and I suspect we may have been too low for it. This does appear in the E-W valley to North [[end of page]]
912 [[encircled]] 11 [[/encircled]] Miranda roll 1 - pictures 1 - 9 Windmill Hill, NE from WM Hill to Clay Slide goniatites on hill 4920. Alpa Roll 2 1 - 4 Views from hill 4920. April 28 Just at entrance from N to pass between hills we cross Leonard ls #1 of King which is not very thick and is mostly of bituminous limestone with goniatites but also contains some beds a foot thick made up of broken fossils. 723k one block [[left margin vertical ]] Large collection of crackout - 3 blocks [[/left margin vertical]] 723-l contact of CM & SkR sharp with yellow shale and massive ls. Just below contact are smooth greenish ls with many fossils especially Spyridiophora. This is the very top of SkR. We took one large block and 2 small ones. A28^1 = 723m Whole hill in SkR near top. Fossils scarce, cgl. ledges occasional [[left margin]] One piece to break up [[/left margin]]
913 [[encircled]] 12 [[/encircled]] A28[[superscript]] 2 [[/superscript]] = [[erased text]] just below crest of hill about 10' is contact of Sk R and Cath. Mtn. Here the former has silicious skins with Glyptosteges, but most of rock is calcarenite. Contact is at about 4575'. [[margin note]] 723q [[/note]] 723n = King loc 9 - on edge of spur beside arroyo 15-20' of ls beds in shaly and cherty Cathedral Mtn. with bioherms of smooth dark gray limestone. One doubtful Institella & A. trigonalis. This locality is definitely in the cathedral Mtn. [[margin note]] 3 pieces collected [[/note]] Miranda Roll 1 - 10 - 21 hills between Windmill hill W of Iron Mtn. [[margin note]] Name specimens after ranchers [[/note]] 723o - One block and some goniatites from SW base of hill West of Iron Mtn. Spent day on hill between Windmill Hill & hill W of Iron Mtn. South part hill is in Sk. R., north part in C.M. The contact is well marked by CM shale on massive Sk R limestone on the west side of the hill [[end of page]]
914 [[circled]13[[/circled]] but on the east side the contact is of bituminous limestone against massive calcarenite Visited King's localities 8,9 and They are as he records. The beds at loc. 9 look like Split Tank stuff but fossils were not common. Saw [[underlined]]Chonosteges.[[/underlined]] April 29 Hill W of Iron Mtn. = WC - N 85 [[degree symbol]] E 15 [[degree symbol]] N = 723r [[sketch of geologic column in left margin with description to right follows]] Wolfcamp | Large pebble cgl. ----------| Shale | Covered The top of this shows some WC congl float, sandy, 55' | scattered pebbles but it is mostly shale ----------| 15' shale | ----------| | 1' Iron-stained sandy band. N25E 10 [[degree symbol]] N ----------| 31' | Shale | ----------| ==========| 6" sandy band shale 10' | | ==========| 1' band of ls swelling to 1 1/2' small bioherm 10' | Shale ==========| 2" sandy band 1'-shale | ==========| 6" Dark brown breccia with fossils | 723r 32' | bluish shale ----------| 6-7' | small pebble cgl. | [[end of page]]
915 [[encircled]] 14 [[/encircled]] Section up nose of mile-high hill Lowest ledge about 150' below base of main ledge is a slipped block of limestone cgl. The upper part with large pebbles, The lower with fine chert pebbles. WC sandstone, orange pieces appear in float above the cgl. ledge. Handleveling began at transition of chert cgl & ls. cgl. There are 15' vertical of chert cgl. Ls cgl measures 65 feet vertical. This interval has small ls cobbles & chert pebbles, a great variety at base but after about 10' The rock is fine calcarenite with large pebbles, some a foot across. Saw no fossils. This rock also contains angular rusty masses, probably silicified pebbles. [[geologic column in left margin]] 432' ------ 145' | C. 55' mostly non congl. with occasional pebbles. Mostly fine calcarenite. High spined Omphalotrochus Tiasbella[[?]]. Huge crinoid stems G | -----| F 82'| 723s | 5135' -------- E 22' | ----------- D 65' same| N24° E21° ----------- C 55' | Mostly D. same lithology as below -------------- B 65' ls cgl | Occasional chert pebble. Rock fine-grained, dolomitic. ------------------ A 15' Chert cgls | |
916 [[encircled]] 15 [[/encircled] E - 5' cgl at base, scattered pebbles in fine calcarenite matrix. at top a yellow bed with limonite pellets. Enteletes F. Calcarenite Thick bedded with layer of ls cgl at top. G. Partially dolomite at bottom, upper 45' mostly biohermal ls and coarse calcarenite full of fossils Small corals, sponges Dip on to is 12° W and strike N20E I guess The top of This knob to the 15-25' strategraphically below The top of The knob at 5250' just to north. Visited king's loc. 3. All in coarse calcarenite with scattered broken fossils. Elongate Thin brown corals are common. The dip slope of hill 5250 containing circular depressions in which are beds of the C.M. in form of bit. limestone and cherty, yellow humps. A29 is the correct location for the beds with Uncinuloides = Torynechus I think this is the topmost bed of the Skinner Ranch. The Torynechus bed has a 2 to 4" silicious [[left margin]] Small- [[underlined]] collection [[/underlined]] [[/left margin]]
917 [[encircled]] 16 [[/encircled]] skin on it where it makes contact with the C.M. Miranda roll 1-22-26 hill W. of Iron Mtn. Alpa roll 2-4-18 hill W of Iron Mtn. Saw Wolfcamp on SW side hill W. of Iron Mtn. (= Mile High Mtn.) Our section agrees in thickness with that of P.B. King. Then went up south nose of Mtn about in direction of strike. At base fine chert pebble cgl. gradually passes into limestone boulder cgl. Took pebble with fusulines. The boulder cgl. extends for about 65' vertical - after which little cgl. was seen. The upper surfaces of the Sk R must have very irregular, with many hollows, because patches of C.M. "shale" and chert appears in the slopes and down the hill. The Uncinuloides is right at the top of the Sk.R.
[[Blank Page]]
727a 726n [[end of page]]
918 [[encircled]] 17 [[/encircled]] April 30 A30=King 37 - mostly steeply dipping bituminous sandy limestone with goniatites and sandstones. Sandstones have small bioherms, small [[left margin]] 729x [[/left margin]] probably patch reefs made up of bryozoans and brachiopods. Photograph one with A. trigonalis, about 3 1/2'x 4', nearly square and about 1' thick. Also saw Institella at several levels. 723t about 25 feet below top of lower Word. Ledge 60-70' Thick At about 5225 feet just below bench This is N 45°W of small igneous cone near Iron Mtn. A30' Leonard ls #2 N 62°E 10°N Dick measured 60', of Leonard #2. [[left margin]] 723u [[/left margin]] This is predominantly light gray weathering calcarenite but with many bioherms The latter is its most characteristic feature. 723t - The rock is generally a coarse calcarenite, gray weathering, often light colored on fracture. Looks very much like higher Word limestones. Fossils scattered in blocks where they occur, not closely packed
919 [[encircled]] 18 [[/encircled]] A 3p[[superscript]] 2 [[/superscript]] - conical knob 4700' high. Top 50 feet is in heavy, massive limestone some biohermal. Contains orthotichia etched out years ago & also many fusulines. The bed appears to be dolomitized. Cannot make out bed to which it belongs. Perhaps Leonard #2. Cup corals are common. 714 W - Visited This old place on the highest hill but collected nothing. Just below this locality and south about 20' above the creek is another outcrop like that of 714 W. This appears to be faulted down from 714 W. Here in the faulted block along the creek we collected several blocks with A. trigionalis. We also saw a large bioherm with many Institella, made picture Miranda Roll 1 - 27 Alpa " [[ditto for: Roll]] 2 - 19 - 21
920 [[encircled]] 19 [[/encircled]] May 1 Spent day at searching the Road Canyon formation on the west side of Gilliland canyon. First locality is 723w and the hill above it. [[left margin]] King gives 80' [[/left margin]] M1 - Nearby a full section can be seen here, about 70 - 100' at a [[left margin]] 723w [[/left margin]] guess. Base has one large bioherm which was collected and is loc 723w. Above the bioherm are gray sandy limestones, fairly heavy bedded in layers of 6" to 2'. Some beds have silicious skins. Fossils are uncommon except for goniatites which are scattered usually but in a few beds are concentrated. Not far above the bioherm, round goniatites suggesting Waagenoceras ooccurs. These are usually limonitized and silicified, are difficult to collect and show few characters. Good goniatites were taken from the bioherm which contained species suggesting 702c but with some exotic elements such as Leiorhynchus, Enteletes and the goniatites. This section and the collecting took all morning Miranda roll 1 - 28 Alpa " [[ditto for: roll]] 2 - 24 [[end of page]]
921 [[encircled]] 20 [[/encircled]] May 1'- visited King's locality 140 which is north of 723w. Here the rock is the same Thick-bedded sandy limestone but we saw no biohermal limestone. Fossils are rare throughout but near top occurred occasional Richthofenids and goniatites. Saw several poor Medlicattia and occasional Waagenoceras? Next visited 720d for more blocks. Only found one. Here about 30' above ls #1 of Word comes a thick lens of ls, perhaps 100 yds long, well exposed in gully and petering out in both directions. 720d is evidently related to this lens. Fusulines are common. Rest of fauna seems more related to beds below rather than to the Word above. [[left margin]] Send to Garner [[/left margin]]
922 [[encircled]] 21 [[/encircled]] May 2 Miranda Roll 1 - 34 = chert in Word ls #1. - Others of Road Canyon on N & W sides Gilliland Canyon. 35 face of thin bedded cherty Word #1 M2 - East face hill 4910 capped by Word ls #1, thin bedded at bottom but becoming heavy bedded and massive at top. Fossils uncommon and scattered in lower part. Much chert in middle region and some sandy beds. Upper massive is coarse calcarenite with crinoidal debris, common but scattered, long [[margin note]] 723z [[/note]] tetracorals common on top of 723z. Brachiopods are uncommon. 723y - West side low hill contains numerous yellowish-gray mealy bioherms which contain scattered fossils. Bryozoans abundant. Ammonites common Bioherms seem cobbly but usually grade into calcarenite or shell breccia. These are below those of 711q near Clay Slide. Institella present. Saw no bioherms at base or at top. The section is thus quite unlike that on the East side of the valley and at hill 4910. [[end of page]]
923 [[encircled]] 22 [[/encircled]] May 2[[superscript]] 1 [[/superscript]] = 7246 - Sight on top of Leonard Mtn. N55° W of outcrop Sight on small plug N81° W. " " [[dittos for: Sight on]] hill 4910 is N12° E Outcrop to road 0.7 mile Mostly siliceous platy limestone with much chert, mostly thin bedded. Typical of upper part of Road Canyon. Contains bioherms or sand banks which contain an abundance of corals and other fossils in concentrations. Brachiopods are not well distributed. This appears to be the upper part of the Road Canyon, similar to top layers on the hill 4910. [[solid line across page]] Notes on May 3 - Examine Road Canyon on both sides Gilliland Canyon. Saw no bioherms on W side between 724b and 723w where one occurs at the base. Goniatites common but poor in upper part at 724f. Bioherms occur at base and top on east side. Thick-bedded calcarenite 30 - 35' makes top of Road Canyon on E side but biohermal lenses & calcarenite lenses laterally replaced by shale occur in the 35 to 40' above the massive upper ledge of the Road Canyon [[end of page]]
924 Gilliland Canyon Rd. Canyon fm. [[encircled]] 23 [[/encircled]] May 23- Specimen marked 7212 comes from very top ledge of the main mass of The Road Canyon but I think it may be stratigraphically like 724 C The upper biohermal masses seem to swell and contrast. 724C Less 35' vertical above main ledge, fairly isolated mostly shell bresia. About 2 - 2 1/2 feet thick. 173 - West side Gilliland canyon Road Canyon 70 - 80' thick moderately heavy - bedded limestone, fine grained usually dolomitic, weathering light gray in beds of a few inches to 2 - 3'. [[left margin]] 724f [[/left margin]] Fossils rare and scattered. Uppermost layer with a skin of 1 -2" of brown siliceous material. Also goniatites in uppermost bed, very round ones (Waagenoceras2) and flat Medlicottia. Small collection 724f Alpa roll 2 - end } Gilliland " " [[dittos for: Alpa roll]] 3 - 1- 4 } Canyon E side Miranda Roll 2 - 1 - 4 - Gilliland Canyon
925 [[circled]] 24 [[/circled]] Hill N5[[degree symbol]] E of small igneous Knob. 724d N of Leonard Mtn. [[image: sketch of geologic column in left margin with description to right follows]] | Word shale | -----------| H 8' |Bluish gray granular, massive ls - many fossils = 724d -----------| G 724e 27' |Blocky massive ls finer grained than F brachiopods & |fusulines abundant. Gray -----------| F 32 1/2 |Great sand back or bioherm forms main jutting ledge. Many |massive bryozoa -----------| E 5' |Blocky somewhat bituminous ls. beds 1' thick -----------| D 27' |Mostly covered but lower half, in ls beds about 1/2' thick |upper half yellow shale -----------| C 21' |Massive blocky ls, 2'-3' beds with limonite siliceous layers -----------| B 16' |Thick bedded with sand lenses (beds 1/2 - 1') -----------| A 18' |Massive bioherm 18' vertical corals, richthofenids - many |fossils like 702c. -----------| Vertical | Mass Cath. | Mtn. | [[end of sketch]] [[left margin]] 119 [[/left margin]] F is top of Road canyon as shown on this part of hill. Laterally G is represented by shale. Section located at about 5200' el. N5[[degree symbol]] E of igneous Knob. 724e fusulines 724d " [[ditto for: fusulines]] & one block Miranda roll 2 - Alpa roll 3 -
[[page number]] 926 [[/page number]] Gilliland Canyon [[circled number in left margin]] 25 [[/circled number]] May 4 = 724g. Knob in valley. Upper 50' vertical of Knob is in Road Canyon limestone Blocky moderately thick bedded, breaking in rectangular pieces, some with siliceous skins. Scattered fossils but usually rare and widely distributed. Lower thick ledge with many ammonites of three or four kinds. [[text - adjacent to upper part of stratigraphic section]] M4' Big bioherm [[insert]] N of Leonard Mtn. [[/insert]] at base of Road Canyon is conglomeratic at base, usually massive, coarsely granular full of fossils.[[/text]] [[image - stratigraphic section in left margin with annotations, and descriptions adjacent to stratigraphic units in main text]] plus 70 to top of Knob ___ 11'|L ___|_ K 6' | _____|_ J 6' | _______|_ I 10' | 33' _________|_ _____ N25°E of small plug H 27' | ___________|___ See next page G 15' |platy shale N70°E 10°N _______________| F 12' |Coarse massive calcarenite with cherty _______________|bryozoa many cup corals & other fossils E 14' |Yellow platy shales _______________| D 45' |Blocky calcarenite ending in a 3' massive ______/\_______|bed. C 11-20' |Bioherm of massive ls with bryozoa _______________| B 18' |Fine-grained calcarenite Some chert at top _______________| |Coarse cgl. mealy at base, possibly with A 0-44' |CM debris , Bottom very irregular _______________| 195 8 [[/image]]
927 [[circled]] 26 [[/circled]] A. base about 5200 level on W knob Leonard Mtns B - Top 2' in bedded chert under biohermal mass C - On line of section the biohermal material measured only 11' but the section is in a swale and the bioherm on the west goes to 15', The one on the east to 20'. In between is yellow shale perhaps float but I think not and platy calcarenite F very coarse calcarenite G. Platy shale H - light gray calcarenite, numerous fossils, mostly moderately thickly [[left margin]] Fusulines taken 724h [[/left margin]] bedded but with several large bioherms One is 10' high by 25' wide. I - Thin-bedded ls, chert and yellow shale J. Calcarenite with scattered by numerous fossils. Looks like our 720d. This comes level with top of Iron Mt about 5400. We are due north of the N knob of Leonard Mtn. K cherty, yellow shale - two thin ls. L - yellow shale capped by a foot of fine-grained ls. 70 feet to top of knob in shale
928 [[encircled]] 27 [[/encircled]] Base of section thus begins at 5311' and extends to bed I which is top of Road Canyon or to top of bed F which is last massive calcarenite. Coscinophora from bed H The bioherm appears to me to be a veneer over the massive conglomerate. The veneer measuring 10 to 20' in thickness [[strikethrough]] Specimens marked 711q from Clay slide must be relabelled [[/strikethrough]] 724j - Two blocks from a huge loose piece detached from main lower bioherm. 724k bioherm of Cathedral Mtn with large Peninites. Miranda roll 2 - 5 - 10 Alpa roll 3 - 5 - 8 The Road Canyon has bioherms at different levels that swell and thin. The largest is the one at 724j.
929 [[circled]] 28 [[/circled]] May 5 Leonard Mtn. N end Line of section N5[[degree symbol]]W [[sketch of geologic column with layers labeled with letters and thickness given in feet. Descriptions of layers on right of page]] D[[superscript]] 1 [[/superscript]] 41' All in unbedded massive calcarenite forming the capping ledge of the knob C[[superscript]] 1 [[/superscript]] 16' Mostly covered, shale & thin bedded calcarenite 6" B[[superscript]] 1 [[/superscript]] 22' Massive bedded calcarenite, silicious skins. 1' shale 3' below top. see over A[[superscript]] 1 [[/superscript]] 1' shale Z 24' flat bedded sandy ls, sand in patches, next p Y 11' Silicious shale, thin limestone - partially covered X 1' calcarenite, flat 1" silicious skin W 18' Most covered but much shale & yellow chert in float V 12' Massive ls cgl. Penicularis U 6' bedded calcarenite massive T 12' Massive cgl. - Sponges, Elliottella, cup corals S 16' Bedded [[insert]] pink & brown [[/insert]] thick calcarenite - base of cliff R 5' chert Q 22' Greenish fine grained biohermal ls. P 16' Covered O 14' coarse massive calcarenite with huge crinoid stems N 16' Covered M 44' Mostly blocks calcarenite, dark 6" - 1', silicious skins L 11' crumbly dark gray blockey with Elliotella (spec). K 32' Thick bedded, light yellow gray calcarenite J 5' massive gray green biohermal ls. with enormous crinoid stems. I 14' Massive calcarenite, silicious tops - bed 3' thick. H 2' Neospirifer, Elliotella G 25' Covered F 22' Massive calcarenite not showing bedding Some biohermal ls. N 45[[degree symbol]]E 8[[degree symbol]]N E 49' Covered D 11' Bioherms with many fossils. smooth greenish ls. over C 5' flat bedded, coarse calcarenite B 11' biohermal ls. A 22' Solid massive fine - grained, pellet limestone with forams and some sand -------- 504'
930 [[encircled]] 29 [[/encircled]] [[left margin vertical]] The Scacchinella bioherms are characterized by orange-brown rusty spots and streaks, fossils replaced by it. [[/left margin vertical]] D - Smooth greenish biohermal ls. with many fossils. Scacchinella, Heliospongia (large) N58E 6°N. F Very massive - have some lime cobbles. H - Dark gray calcarenite with siliceous streaks, Limbella, Neospirifer, Meekella, Elliottella Q Contains large Enteletes, Hustedia, Peniculauris, large Wellerella and possible Scacchinella R chert light brown - 5' - Sandy limestone in basal foot Meekella T, V. pebbles small 3 - 6", ragged Miranda roll 2 - 11, 12 SkR chert " " [[dittos for: Miranda roll]] 2 - 13, 14 " [[ditto for: SkR]] sandy ls. Z and on surfaces. 1' below top is a layer of shale of unknown thickness B' - Enteletes, Stenoseisma, Torynechus Peniculauris. Leptodus. Torynechus at very top D' Lower 15' with corals, occasional small pebble. Top 25' with few fossils
931 [[circled]] 30 [[/circled]] Coarse ribbed Megonsia in top bed. It is possible that the upper 41' really belongs in the Cathedral Mountain if one correlated on Torynechus zone. However Torynechus occurs in top at loc. 709 724-l Saddle N53° E 12N} N65° E 9N} Chert surfaces in saddle show best the fauna Torynechus extends stratigraphically 40 - 50' 724m - north knob (high) of Leonard Mtn. On south nose the following vertical section occurs. [[margin]] Institella common in C but abundant in D & E [[/margin]] [[image: sketch of geologic column in left margin with description on right]] E 724m Thin -bedded ls and chert forming top D 1 - 2' gray chert C 5 1/2' Thick - bedded ls. [[circled]] 724n [[/circled]] B 76' vertical yellow, thin - bedded shale and occasional thin ls bed or lens A Skinner ranch E abounds in Institella. C may have Torynechus (or Rhynchopora)
Near the Mountain north of Leonard Mtn. King 132. NNE of BM 4627 [[solid line across page]] On top of hill in Gilliland Canyon between BM 4873 & 4869 [[erased]] NNE of BM [[/erased]] [[solid line across page]] 0.8 mile S west of Word Ranch house King 251 on nose of hill [[solid line across page]] [[double underlined]] Mark on maps. [[/double underlined]] [[right margin vertical]] Waagenoceros in Word # 1 [[/right margin vertical]]
932 [[circled]] 31 [[/circled]] Bioherms appear on northeast side of this knob on the north nose of this knob the biohermal ledge is some 10' of massive ls. The rock is much different from the Skinner Ranch because it contains scattered quartz and chert pebbles all well rounded and small, less than an inch. 724m - Thin Institella beds E 724m - 5' bed near top of Mtn C 724o - Fusulines from bed A of main Skinner Ranch section 724p. - Scacchinella bed (D) of main section (See page 28.) [[sketch of geologic column in left margin with descriptions of layers on right]] Wolfcamp SKR cgl. on 4700' contour on east side ravine 22' covered brown ss 2' 11' chert & ls pebbles 30' covered = shale? ls cgl in ss & pebbles [[/sketch]] [[enclosed]] Miranda roll 2- 11 - 18 Leonard Mtn. Skinner Ranch & snake [[/enclosed]] Scacchinellas abundant between 2nd & 3rd bioherms and on top of second one Heliospongia on top of 2nd one
933 [[encircled]] 32 [[/encircled]] Iron Mtn Ranch 10 miles by road from Marathon Marathon to Hess Ranch House [[left margin]] 90 [[/left margin]] is 14 miles. Igneous body Road to out crop is 50' horizontal and from beginning of out crop to igneous body is 325' horizontal The igneous body is estimated at 200 paces = 500 feet horizontal Outcrop consists of massive limestone with small well-rounded pebbles and some biohermal material with Enteletes. Pebbles extend 150' from south end out crop for [[blank]] feet toward the igneous body. Beyond the last pebbles to the north the rock is bluish, biohermal and loses all of its inner structural character but maintains the distinction between biohermal material & non-biohermal. [[left margin]] 724r [[/left margin]] 724s Contact of Hess with Institella beds, here massive with [[left margin]] 724s [[/left margin]] scattered pebbles. Same beds go into stream down N face of hill and across road. [[end of page]]
934 [[encircled]] 33 [[/encircled]] They also are in the hill making a prominent cone = 724t. Conical hill for 50' + - is all dolomite dipping south steeply Dick thinks it is Hess under the basal Cathedral Mtn. The block on the conical hill is thus punched up and faces southeast We found institella on the west nose of this hill. I am unable to see any rock in this hill except the lower Cathedral Mtn. The rock is very steeply tilted about 40 to 50°. Opposite the crest of hill, normally dipping WC butts against it. This about where the igneous body ends. We saw no pebbles in the CM here but in unaltered rock Institella is common. Saw fusuline shadows in bluish limestone in steeply tilted part of ls. Strike N85° E 50°. Thin, dark coarse calcarenites suggest lime sand between bioherm A little yellow shale also suggests C.M. Miranda Roll 2 - 19 - to end Hess Ranch area Miranda Roll 3 - 1 - 9 area around the igneous body at the Horst
935 [[encircled]] 34 [[/encircled]] May 7 724u = King 243 Lower part Word ls, mostly buff sandy ls in ledges 1-2' Thick. Some brown pebbles chert bands. I guestimate 100' of ls. 724v - five pebble cgl. with fusulines [[left margin]] M7 Hill NE of Hess Ranch [[/left margin]] M7 - Light colored dolomite which forms crests of two eastern most knobs appears on west side knob at M7. Could this be the same light ls as above the Scacchinella beds on NE Leonard Mtn & above Scacchinella north of Hess House Hills. West of the M7 mark we have dark buff dolomite, massive biohermal? [[left margin]] Hill 5801 [[/left margin]] May 7 [[superscript]] 1 [[/superscript]] - Center knob above Road canyon ledge - Handlevelling above top biohermal mass of Road Canyon - 726C - Ammonites at 719x
39 5 --- /195 17 ---- 212 5250 278' ----- 4972 [[end of page]]
936 [[circled]]35[[/circled]] 724y, 2 726e [[sketch of geologic column in left margin with description to right]] 5250' ----------- 5' | Top of hill in yellow shale & ss & chert ----------- 724y 1' | fusuline ls forming upper rim of hill 724y ----------- 18' | shale ----------- 1' | ls packed with fusulines, 2" silicious crust ----------- 4' | shale ----------- 2' | smooth ls lens ----------- 14' | yellow sh ----------- D 724z 6' | Ls packed with fusulines & silic brachs 2-4" silica crust 724z | [[724z is circled in margin and in text above]] ----------- C 212' | yellow shale N23 [[degree symbol]]E 12[[degree symbol]]W ----------- B 3' | coquina of fusulines, [[insert]] 726e [[/insert]]with small | brachiopods ----------- A 12' | yellow shale [[solid line across page]] 4972' top of R.C. -----------_____________________________________________________________ {upper | {bioherm | 38' Bioherm Rich in cup corals. {Rd Canyon| ----------- { | 32' mostly Thick-bedded blocky ls. with siliceous skins & many ----------- fusulines { | 27 biohermal, massive with Coscinophora ----------- { Covered | [[end of sketch]] Road Canyon proper measured on 721j locality. Probably does not include the lowest bioherms
4972 70 ----- [[end of page]]
937 [[encircled]] 36 [[/encircled]] Ammonite bed = 726c is 70' underneath The top ledge (upper bioherm) of the Road Canyon. [[left margin]] 726d [[/left margin]] The small Leptodus bed is about 25' below The same point Ammonite bed is at 4900'. Ammonite bed is in form of calcarenite masses, poorly bedded and simulating a bioherm. Upper bioherm just below 5250 knob is about 20' thick. 726e is fusulines from bed B in section on p. 35. Miranda roll 3-10-14 In Road Canyon and Road Canyon fm. 5250
938 [[encircled]] 37 [[/encircled]] One specimen 724x turned over to Garner Wilde. May 8 Section up hill with 721j. [[sketch of geologic column in left margin with layers labeled with letters and thickness given in feet. Descriptions on right of sketch]] [[arrow in left margin pointing up]] Section of May 7 27' Large bioherms with elongate cup corals E 11' shale & thin - bedded ls. level of 721j D 16' Block ls., some shale, ls with silica skin C 6' Shale & thin ls, shale yellow B 30' Bioherms with Coscinophora A 16' Bioherms & massive calcarenite like 702c ------ 106' Dip & strike between top bioherm and ledge 726e. N53°E 14° NW Visited 708 & walked to top of hill. On side nearest main mountain mass the rocks are tipped steeply toward the northwest showing evidence of considerable [[left margin]] 728g [[/left margin]] disturbance and definite presence of a fault. Miranda roll 3 - 15, 16 fault & King 104 Alpa " [[ditto for: roll]] 3 - 14, 15 fault, east end Hess Ranch Horst
5370 [[end of page]]
939 [[circled]]38[[/circled]] Section over hill 5305 Line of section N5[[degree symbol]]E. May 9 [[sketch of geologic column in left margin with description on right]] ---------| I 35' | Biohermal beds with Scacchinella ---------| & fusulines at base | H 15'-26'| Shaly beds with thin ls having | large Omphalotrochus ---------| G 60' | mostly calcarenite, dolomite | bioherms ---------| { 8' | ^[[see over]] massive biohermal, F {______| like ls, dolomiticized { | Heavy bedded dolomite with { 27' | crinoid stems ---------|base SkR. { | { E 27' | Massive limestone, smooth to { | granular numerous fusulines WC {--------| { | Generally cobbly to mealy { D 81' | limestone with many crinoid { | stems. Parenteletes at 50' {________| Linoproductus { | { C 11' | Mealy zone, crinoid stems {________| { | { B 238' | All ls congl., tightly { | cemented pebbles, up to 6", { | few siliceous ones. Pebbles with {________| frito's algae | A 54 | Limestone cgl. basal 25' with | chert & quartz pebbles as well as | rounded ls cobbles 2 - 3". | Silicone absent or rare in upper _________| 29' | 446' to | 446' to crest at 5305. knob at | Scacchinella found 25' below top 5305 | or at 5280'. I think contact with Section | SkR is 35' below top at base of began at | 27' dolomite + 8' biohermal 4859' | dolomite.
5305 35 ----- 5280 168 ---- 5112 5050 100 150 5175 [[end of page]]
940 [[encircled]] 39 [[/encircled]] Scaccinella bed fossils occur about 250' down slope of crest or 25' below the top of the hill at 5280' on north facing tongue. The top of the knob at 5305 is, I think, a bioherm in the base of the SKR. but its top is dolomite and the sides are patchy dolomite and dolomitized limestone. In this case the contact between WC & SKR would be at about 35' below top of hill or at 5270' on mountain front 25' below (west of the knob) at 5280' is a saddle formed in shaky material at the base of another knob, bioherm or series of bioherms here we took fusulines, Scacchinella and other species from low in the SKR. Handlevelling down from 5280' to 5230' all in dolomite faithfully preserving character of rocks: massive bioherm or flat bedding 5280 - 5270 - covered [[left margin]] 31 5 [[line]] 155 13 [[line]] 168 [[/left margin]] H - shale with Omphalotrochus forms a saddle at point H This makes a prominant break in the contour of the hills From the map this elevation
440 37 ---- 477' 4850' ----- 5327 85 31 -- 54 5 --- 270 21 ---- 300 4850 ----- 5150 [[end of page]]
941 [[encircled]] 40 [[/encircled]] appears at about 5175'. We come out at 5112'. about 60' off. This is in a swale between bioherms Strike & dip on H = N57°E 24° NW 726j - bioherms on top of bed H The shaly beds with Omphoalotrochus Here we found abundant fusulines Scacchinella and other typical fossils. Bed I - Measured at 35' is one bioherm (I think! much of the surface dolomite. The saddle at H is 51 HL steps above stream at 4850' and puts saddle about 5150 - by map location it is at 5175' I Garner dates fusulines as Leonard #1. The crassitectoria occurs on the long nose that extends east of the saddle at H. This bioherm is clearly underneath our location I. It must be in the lower part of the Sk.R. and thus above Scacchinella of the Decies Ranch. They are definitely above the crassitectoria zone. [[end of page]]
942 [[encircled]] 41 [[/encircled]] 726k S. crasstectoria in flat 4 - 6" bed near Scacchinellas Miranda Roll 3 - 17 - 30 Hess Ranch Horst 5505 & 720e Alpa Roll 3 - 15 - 17 same
943 [[encircled]] 42 [[/encircled]] May 10 Bioherm in Sullivan Peak member Hill 4801 Horizontal 44 paces = 110 feet Vertical 7 HL = 38' Base up to 5' in congl. Ls cobbles some 1' across with siliceous margins. Mid part with many siliceous bryozoa on W side a tongue about halfway up extends into bounding cgl. This tongue has small richthofenid (my new genus of Tegrilifernina) and numerous sponges. Matrix mainly smooth fine grained limestone with small algae. Huge crinoid stems & coarse calcarenite in 5 - 10'up. The tongue on the west side overlaps the top of the cgl. and is a sponge - brachiopod mass. The brachs must have favored the outer parts of the bioherm Geyerella present in the sponge reef on west side and near top. The top of the bioherm is capped by a foot or two of shale and then by bituminous ls of the Skinner Ranch.
944 [[encircled]] 43 [[/encircled]] Top of bioherm has a skin of silica a small fault cuts along the east side of the bioherm, a displacement of about 20'. Windmill hill Beds with forams (WC) about 20' at a guess below cgl. in gully Spyrdiophora found in shale on margin of westernmost saddle. Alpa roll 3 - 17 - end S end Lenox Hills Miranda roll 3 - 31 to end S end " " [[dittos for: Lenox Hills]] Alpa roll 4 - 0 - 7 Lenox Hills & Windmill Hill Miranda Roll 4 - 0 - 5 " " [[dittos for: Lenox Hills]] & " " [[dittos for: Windmill Hill]]
945 [[encircled]] 44 [[/encircled]] May 11. Leonard Mtn. Very top at 5860 is in Skinner Ranch. First Leonard is on the larger knob to the north = my 724m, n. A fair thickness exists down the dip. Went to Horst for lunch, walked with crowd through notch to our 720e locality. In this direction the distorted bedding of the upper Lenox Hills can be seen and on it a veneer of flatter bedded limestone running up the slope. This extends into a small ravine and Scacchinella is present here. Then comes a small knob and another gully to arrive at 720e. This knob is also a Scacchinella knob. The WC - D.R contact must be at about 5075'. Found ammonoids at 726m Miranda roll 4 - 6 - 15 Leonard Mtn, Hess Ranch Horst.
946 [[encircled]] 45 [[/encircled]] May 12 726n - On slope near road just beyond stream crossing in Hess formation King's loc. 223 with Wellerella and Composita. 726o - Fine bioherm, light blue to green gray abounding in richthofenids. [[sketch of geologic column in left margin with descriptions on right.]] Section at 726o 27' Dolomite with many holes of fusulines 50' Thin-bedded bituminous ls that weathers white interbedded with flat silicious shale 17' Bioherm of richthofenias. [[two-headed arrow between above three units with vertical note indicating they are Word #1]] [[vertical margin note]] Word #1 [[/note]] 100' of slope? Cherty beds to base of hill = Cath. Mtn. [[end of sketch]] King localities 235 and 249 are on this hill. King calls his locality 235 Upper Leonard. It looks to me to be the same as my 703a. Puzzling elements at this place are the productids of the genus Rugatia which usually are lower in the section.
4801 105 ---- 4696 54 4 --- 216 105 63 224 --- 392 4801 392 ---- 4409 [[end of page]]
947 [[circled]]46[[/circled]] Hill 4801-Southwest Lenox Hills [[margin note]] See notes of 1964 p.989 [[/note]] [[image: sketch of geologic column in left margin with description to right follows]] Section started on top of Decie Ranch member, N15° E9° Section made by direct measure -----------| 105' vert | Cath Mtn | -----------| N40° E17° N N 38' | Bituminous ls in beds of 6-8" Thick -----------| M 2-5' | crumbly shale 2 to 5' -----------| L 23' | Course boulder cgl. = King's ls #1 | Bioherm on east side is 38' thick | Bioherms = 726 [[underlined]] p [[/underlined]] -----------| K 76' | Mostly yellowish to yellow gray sh with sporadic thin | ls + sandy - cgl. ls. with siliceous skins Spyridiophora | common -----------| J 1-3' | Lens, ls cogl. small quartz pebbles, ls pebble 4" -----------| I 14' | crumbly yellow gray shale . -----------| H 1' | Hard smooth yellow gray ls. -----------| G 30' | Crumbly gray brown shale -----------| F 2'- 3' | Hard yellow sandy ls. bed, small pebbles Spyridiophora -----------| 90' | Thin yellowish shale with interbedded thin ss. cgl. and coarsely E N55°E | detrital. Beds of dark crinoidal ls. - Silicous caps on thin ls. 12° NW | much shale in top half -----------| D 2' | 2' cobbly ls passing into calcarenite Spyridiophora -----------| C 74' | Much covered but thin-bedded detrital ls, sandy cgl. ls - often | with siliceous caps. beds up to 6" or 8" Some thin bedded shale -----------| B 2' | Ls. cgl. 2' -----------| A 20' | Mostly covered but float in thin-bedded sandy ls & shale. -----------| 315' [[end of sketch]]
948 [[encircled]] 47 [[/encircled]] Bed N Besides the dark ls this interval has small bioherms with large crinoid stems, These beds are draped over the large bioherms but appear to belong to the Leonard #1. The Cathedral Mtn contact is abrupt & sharp. Top of this bed is at The Scacchinella (Decie Ranch) bed is at 4409' Miranda Roll 4, 16 - 26 - loc 726o and cgl. & other views at hill 4801 Alpa Roll 4, 8 - 18 - Loc 726o and cgl & other views at hill 4801 [[left margin vertical]] The bioherms are called 726p. The easternmost & largest has [[underlined]] Geyerella [[/underlined]] [[/left margin vertical]] At south end Lenox hills in hill 4801 the two big bioherms are at about 4658' but the section goes 38' higher to include the dark limestones above them. Followed to the west several other bioherms can be seen, but the dark limestone is not present and these are overlain directly by yellow shale. Along the cliff huge boulders appear in the cgl. some measuring up to five feet in one direction. At the base of this section in the arroyo and at about 4409' comes the top of the Decie Ranch
949 [[encircled]] 48 [[/encircled]] member with great abundance of Scacchinella very beautifully displayed in section. On the east side of the arroyo is a low hill with many exposures of the Decie Ranch with Heliospongia and other typical fossils. This exposure seems to be up dip from the beds on which we started our section. It also seems continuous to the [[strikethrough]] the [[/strikethrough]] rest of the section. The fault at the bioherm has only about 30' displacement but this may not be the main fault, just a sliver The knob at A30[[superscript]] 2 [[/superscript]] seems to be definitely Leonard #2.
950 [[encircled]] 49 [[/encircled]] May 13 Ravine N from 702c. 726a - About 70' of Word ls #2 which is mostly dolomite but contains innumerable fusulinids. In many places the rock is crowded with them. Other fossils are rare and scattered and at this place the rock is mostly dolomitized. Contains Costispinifera and large Enteletes. 726r - One block from upper part Word 2. Neal Ranch shale in gully (M13) Strike is E - W dip 8° N [[left margin]] About 200' covered between top of shale & base of Cgl, makes total of about 275' shale 0 - 8 handlevel steps to fusuline bed (1') ls & fusulines above at 10 HL no more shale seen. 34 handlevel steps from base of shale to base of cgl. Later in afternoon collected at King 196, and got blocks at 706e for Sloan of Minnesota. Discrepancy between my measurement of Neal Ranch shale on Horst with others is fact that my section is farther from the igneous body.
951 [[encircled]] 50 [[/encircled]] May 14 - Went to Alpine in morning because of fog Afternoon went to King's Fossil bed 716n and the next locality east of it 716o Section with fossils: Hess lith [[solid line]] 4 - 5' Fossiliferous light brown ls with orange brown chert -- Snails [[solid line]] Cobbly limestone and some shale 33 [[solid line]] 2' [[solid line]] Hess lith cgl., yellowish with smooth matrix & pebbles up to 2 or 3" all of smooth limestone This section was made at locality ^[[716o]] east of 716n. Tschernyschewia was found low in the section. At 716n Tschernyschewia occurs very low in the section all were found within 10' of the lower conglomerate Miranda roll 4 - 27 - 28 [[end of page]]
952 [[encircled]] 51 [[/encircled]] May 15 Word Ranch Pace section across 703b - 703a A 0 - 101 paces yellow shale with Torynechus and M. globosa capped by 1' of poorly fossiliferous ls. B 102 - 176 shale in thinner beds but interbedded with ls beds 4 - 6" thick C 177 - 188 bioherm with M. globosa, D 189 - 218 - Yellow orange shale mostly occasional thin bed. Large Kochiproductus, Rugtia E 219 - 305 Mostly gray biohermal ls. separated by thin beds of shale At 349 comes Leptodus bioherms = My 703a'. 306 - 406 shale with scattered bioherms Miranda 31, 32 roll 4 Aulosteges bioherms +6' vertical in Edriosteges bioherms The rock above this bioherm is clearly a different type than any of the shale, the shale is firmer, slabbier, less orange and contains thin (1-3") slabs of bituminous limestone which are very flaggy. Miranda roll 4 29 to end Word 4 and Word one at Word Ranch Miranda roll 5, 0 - 5 Word Ranch and Words 2 & 3 at 706.
953 [[encircled]] 52 [[/encircled]] 726u - Leptodus ledge = 703a' extends along S side of road and produces a series of bioherms humps throughout its extent. Lower of bed is in mealy, cobbly rock like that typical of the bioherms This is the first ledge below the uppermost bioherms just under the Road Canyon and are about 44 paces thru a vertical distance of about 15' In Word #3 on crest of lull saw Costispinifer 20' below top, also Enteletes. W #3 is about 60 feet thick Word #2 about 45' thick. King p. 143 gives 40 & 50 respectively Alpa roll 4 19 - 28 Old Word Ranch and flowers. At Old Word Ranch the Road Canyon formation consists of two parts; a lower with thin shale bedded chert and bituminous limestone. In this part occurs loc. 703d, 703c. The upper part of the R.C. is dolomitic, massive biohermal limestone. Along the strike the lower bituminous limestone can be traced at least to 726o where it is 50'
954 [[encircled]] 53 [[/encircled]] thick. West of 703c the lower bituminous beds become very thick individually and a large bioherm appears at the top A problem at this place is the proper disposition of the biohermal beds that form a ridge along the road - my 703a. These abound in Edriosteges and are very similar to 702c and the bioherms at the base of Road canyon in the hill north of Leonard Mtn. Yellow shales come right to the base of these bioherms as shown by new cuts that have appeared by erosion. The first bioherms under the Edriosteges bioherms of basal Road canyon is characterized by Leptodus my old 703a'. These are probably the same level as those near the top of Split Tank.
955 [[encircled]] 54 [[/encircled]] May 16 Split Tank Area Miranda roll 5 - 6 to 13 Split Tank Alpa roll 4 - 29 to 30 Section at Split Tank Line of section N50° W; Strike at base of cgl. N55° E 15° N. A cgl. with Institella, small fossils and Perrinites. This 26' thickens & thins along strike B Shale, yellow and yellowish gray thin-bedded 2 - 4" limestone with Rugatia 79' C. Smooth massive biohermal ls. = 702un - Torynechus, Institella 68' D Yellow orange shale with many sponges Slabby shaly ls at top for 87' 35' horizontal E Smooth biohermal ls. = 702ent 51' F Mostly shale with isolated bioherm & thin-bedded ls. 51'
956 [[encircled]] 55 [[/encircled]] G Mostly massive bedded calcarenite, some chert mostly detrital has occasional bioherm in it 34' H. Mostly shale one small bioherm at base 39' I Thin bedded course calcarenite detrital with lnstitella 62' [[erasure]] J - shale with a few thin calcarenite beds 6" thick End of Institella Many smooth Productus at top. Institella ends in middle. Smooth productid common at top 57' K - Large bioherm with many small fossils, top of M. globosa = 702a 111' L - Shale in covered interval 39' M - Shale with scattered bioherms containing large Leptodids 50'
957 [[encircled]] 56 [[/encircled]] [[left margin vertical]] 1042 feet across outcrop of Cath. Mtn. [[/left margin vertical]] N - Mostly yellow shale with some thin slabby ls. beds with smooth productid at first 100' = 288' 726w also with Peniculauris. Above N comes smooth ls of Word 1 with some scattered bioherms The RC - CM contact is at 5450 just 100' below top of hill 5552. 726w is in first 100' of N and 726v is at about 200'. Miranda 5, 6 Institella beds at Split Tank. 7 = 702ent 726y - shale above Leptodus bed with many smooth productids 726z - Lower bioherms of R.C. Miranda Roll 5, 12, 13 pebble bed at base of Cathedral Mtn. Shale N can be traced to east where it contains mealy to cobby beds 4" - 8" thick which contain smooth productids in abundance. Large Peniculauris is common. It is difficult to find a line of separation between upper C.M. and Road Canyon where no bioherms present. I took
[[two vertical serpentine lines]] Split Tank [[arrow pointing to left]] 300' [[arrow point to right]] [[image: appears to be drawing of a geologic cross section showing elevation crossed by small lines across page to indicate locations of identified rock layers with notations from left to right as follows.]] S703c X Word I Aulostiges Fusulines shale Massive ls. with Lept. } with Greenish } small ls. }702a } many small snails brachs. } detrital Crinoid stems Instit. ls. pure Enteletes 702ent Some clams yellow sh. ls. with Institella X Big snails 702 un Uncinuloides Goniatites Unfossil. Hess]] [[end of section]]
Split Tank section N Shale 116' 116 M " Scattered bioherm of Leptodus 12 139 sh. L " 11 K Bioherm 702a 30' 30 J Shale 14' i Coarse calcarenite 15 40 sh. h sh. 11 173 G Massive calcarenite 10 f Sh. 12 e Biohermal ls 12 d Yellow shale 24 c 702un bioherms 19 b Shale 18 a cgl. 8 ---- 312 300 60 255 100
[[unnumbered page]] 52 30 Vert 1 nim[[?]] = 4' 312 Horiz. [[ditto]] 4' 196 _____ 116' [[image - scaled drawing of dipping stratigraphic units labelled a through m, with an uppermost unlabeled unit. Drawing shows stratigraphic thickness and equivalent horizontal distance for each unit in direction of dip]] [[several arithmetic calculations as follows]] 80 4 --- 320 ______ 13| 51 4| 52 8 18 19 24 12 10 11 15 14 30 23 116 ____ 312 312' 116 ___ 49|196 4 __ 6
958 [[encircled]] 57 [[/encircled]] The first appearance of the bituminous light gray smooth ls with dark fracture Above this point thin beds of squashed fossils and scattered bioherms are like those of the R.C. 726z - This is also a difficult place to separate the two formations but the bioherms that run near the bottom of the R.C. seems to have fossils of 702c type, such as lacy covered richthofenid, Edinosteges, and the large richthofenid.
1042 [[end of page]]
959 [[encircled]] 58 [[/encircled]] Miranda Roll 5, 14 - 16 Alpa Roll 4, 31 - 34 Catto - Gage Ranch 700 - Z Leonard #5 - a veneer on the north west end of Dugout Mtn. Rock mostly thin bedded 4" - 8" beds of dark coarse calcarenite or shell breccia with scattered bioherms, the latter containing Institella & Aulosteges Triagonalis the exact same fauna as we see at 714W in the Lenox Hills in limestone #2. [[left margin]] May 17 Dugout Mtn. [[/left margin]] [[left margin erasure]] [[?]] [[/left margin erasure]] Ls #4 About 15 - 20' of heavy bedded (beds 8" - 18" thick of dark fine-grained limestone, smooth weathering with silicious and chert surfaces up to 4" thick. Also includes some sandstone. Occasional ammonite and fragments of other fossils seen. No distinctive fauna. Miranda Roll 5, 14, 15 Leonard #4 " " [[dittos for: Miranda Roll]] 5, 16 " [[ditto for: Leonard]] #3
960 [[encircled]] 59 [[/encircled]] 700m - Limestone number 3 N83E 14[[degree symbol]]N - 130 paces top to bottom [[vertical left margin note]] Leonard ls #3 [[/vertical left margin note]] Blocky dark limestone in beds from 4" to 1' thick, fine grained some layers with siliceous skins. Fossils rare: sponges and ammonites the commonest [[vertical left margin note]] Leonard ls #2 700n = Lower part 700n [[superscript]] 1 [[/superscript]] = upper " [[ditto mark for "part"]] [[/vertical left margin note]] 700n - Same type of ls as above Also contains the same ammonites 69 paces across outcrop N43[[degree symbol]]E 13[[degree symbol]]N Beds 4" - 1' often separated by thin layers of shale. Some thin beds of ss. Slightly conglomeratic at base, and a shell breccia at the top. Ammonites all thru = 700n 700o - Thick ledge of cgl. Contains same ammonites as ls #2 & #3 but has brachiopods Slyptosteges?, Spyridiophora and Peniculauris. This bed is not in sequence with ls # and is opposite a shale interval. 700p - In stream bed 100 yes up stream from 700o is heavy bedded ss with cgl. lenses having pebbles large productids, sponges & ammonites, possible Spyridiophora, Torynechus. [[left margin note]] This appears to be #2 [[/left margin note]] Miranda roll 5, 17 [[end of page]]
961 [[encircled]] 60 [[/encircled]] 700g Conical hill capped by about 70 feet of lower Word, poorly fossiliferous but many fusulinids Lower part massive & somewhat biohermal but fossils uncommon Remainder of hill below in yellow shale, blue shale, some sand and a little cgl. of The Upper Leonard Fossils very rare. Edriosteges was seen in the lowest of Word limestone beds, biohermal- also long corals and some bryozoa.
962 [[circled]] 61 [[/circled]] May 18 Dugout Mtn. South side In saddle just E of peak the Decie Ranch member pinches out the W.C. and makes the top of a Knob. 700r small knob of about 30' of ls [[underlined]] or [[/underlined]] dolomite, rock much altered = Leonard 3 of King. Under it is about 15' of shale. This ls has ammonites & brachiopods like 700p of M17, and like 700m Poplar Tank has very fissile yellow gray sh. Same type seen with Ls #2. Yellow shale also seen near base of Decie R. [[left margin]] Hill 4811 [[/left margin]] 700s = Hill 4811 capped by Leonard ls #3 of King. Looks like same as 700r on small knob. Consists of about 15' of heavy bedded ls with siliceous skins and many broken fossils. Spyridiophora seen. Between 700s and 700t are 50' of chert, ss and yellow shale
4811 139 ---- 4672 [[end of page]]
963 [[circled]] 62 [[/circled]] 700f along base of hill 4811 about 25 feet detrital ss, yellow weathering, some sandy and silicious skins. This ls appears much coarser than above and is suggestive of 700p. Fossils very badly broken up. Saw many ammonites. Much interbedded sand. We collected ammonites low in the member. Leonards #2 and #3 seem to be almost alike and have the fauna of the upper part of the Sullivan Peak member. I guess these converge and unite with the upper part of the Sullivan Peak. The beds just above the big bioherm at the south end of Lennox Hills were dark gray, bituminous like those of Leonard #2 and #3 on Dugout Mtn. Miranda roll 5, 18 - 23 Dugout Mtn. Decide R., hill, cgl at base, small conical hill. Alpa roll 4, 35, 36 Dugout Mtn. Alpa roll 5, 0 - 2 Dugout Mtn. cholla[[guess]] [[geologic column in left margin with thickness of units marked in feet and elevation at right]] 4811 --------| Ls #3 | 15' --------|4796 Sh & | chert | 50' --------|4746 [[strikethrough]] Ls #2 | | 27' --------|4719 shale 38| chert 4'| ========| 47'[[total of 38' shale, 4' chert and 5' shale in one unit]] 5 | --------|4672' Ls #1 | Very | massive | biohermal [[end of sketch]] [[end of page]]
964 [[encircled]] 63 [[/encircled]] May 19 Dugout Mtn. 700u - Uppermost C.M. with bright brownish yellow or orange cobbly, massive limestone with a few scattered fossils 700w = M19 - Dark heavy bedded limestone 15' - 20' thick abounding in dark colored fusuline at top. This is like knob at 700q. 700v - M19 is overlain by 10 - 15' of sandstone forming small lumps On this occurs about 5 - 8' of coarse detrital limestone, a veritable bed of fusulines of larger size and scattered brachiopods that weather out on the slopes This contains fossils suggestive of 702c. I suspect the Road Canyon froys[[guess]] out to the west from Cathedral Mtn. 700x - Institella beds of Leonard #5. Mostly calcarenite but with small bioherms 700y - Lower part of Leonard #1 with Poplar tank sh & thin ls on slope. Coll 2 pieces, the yellow one is Poplar Tank.
[[pencil sketch of geometric figure]] [[end of page]]
965 [[encircled]] 64 [[/encircled]] 700z- Fusulinids about 50' above gully in The Poplar Tank which consists of fissile shale, limestone beds up to 1' or more Thick mostly calcarenites, Thin cgls. and beds of pinkish chert. Rare. The hill is capped by Sullivan Peak which consists of very heavy - bedded massive ls some with thin brown siliceous skins, others with thicker pinkish chert. The latter also occurs in layers of 1' thick cgl in form of ls. cgl. with pebbles near bottom. Crinoidal cgl. near top. A few shell breccias occur. 727a is a shell breccia about 10' below top. Fusulinids also taken here About 75' of Leonard #1 on the edge of this hill. From this place it looks as though Leonard #2 may join Leonard #1 on the main knob of the Mtn. An occasional bioherm occurs midway in The Poplar Tank Miranda Roll 5, 26, 27 Dugout Mtn, Sandstone hill (2), Leon. #5 Alpa Roll 5, 3-8 Dugout Mtn. and small cacti at 700x.
17 77 = 94 1 14 5 = 76 26 = 2250 25 220 22 130 2 = 260 65 = 325
966 [[encircled]] 65 [[/encircled]] Walked east from gully at 727a across outcrop of Decie Ranch. Consists of very heavy bedded calcarenite and cgl. containing pebbles up to about 3 - 4" partly rounded ls and ragged chert 727b - found Spyridiophora in Thin ls on surface of DR. These thin ls are probably Poplar Tank. Top Decie Ranch in bank opposite 727b Thus a full section of Poplar Tank is present A complete section of the Poplar Tank is present from 727b up to 727a and about 75' of Leonard #1. The Poplar Tank is well displayed on these and surrounding slopes. May 20 Wolfcamp Hills WC4 is [[blank]] feet thick mostly limestone cgl., few fossils, well scattered Streptohynchus seen. [[left margin vertical]] Pieces marked Lept. [[/left margin vertical]] Leptodid reef definitely at top of bed 2, contains Enteletes and Limbella and, to me, is definitely Permian. Definitely an algae reef as it has much laminated material in it. It is about 10' in diameter, is surrounded and flanked by calcarenite. Top stands 2' above top of surrounding rock It is silicifed on the side where it had contact with shale Relocate Leptodid bed [[sketch of reef described above]] Collected in Uddenites zone from saddle to east end hills Amphitheater best for Scacchinella. Peculiar algae abundant
967 [[encircled]] 66 [[/encircled]] Miranda roll 5, 28 - 30 WC hills Alpa roll 5, 9 - 15 WC hills May 21. Wolfcamp Hills, West side Bed 4 - N62° 6° N near 727e At Uddenites saddle a great amount of gullying has taken place since the last visit. Collecting not good. At the saddle, N side the bed #2 is 8 - 10' thick and about 5' of shale intervenes between it and the highest yellow beds of the Uddenites zone. Bed two thins to the west and contains a great amount of limestone cobble, in fact it is mostly congl. limestone. 727e - This is bed four and the locality is about that of 701-l. Bed 4 can be walked to Uddenites saddle with one small offset to the knob on N side of saddle. Here it almost lies on bed 2. Bed 4 is about 3/4 cobbly ls cgl. and the rest calcarinite. Alpa Roll 5, 16 - 20 Wolf Camp hills Uddenites saddle Miranda roll 5, 30 - end Wolf Camp Hills, Uddenites saddle Afternoon collected 2 blocks at 721 g
968 [[encircled]]67[[/encircled]] May 22 Small Hill NW of Hess R. N35° E 21° N Vertical Dist D - Just under the chert on SE side hill comes thin limy lenses with occasional ammonites & many broken fossils. Spyridrophora seen in all parts of hill. C. - Some layers with chert skins, containing fossils. Contains some low bioherms with sponges especially at W end hill Bed C may be partly replaced by chert of D to east as west side has low chert[[?]] [[solid line across page]] [[sketch of geologic column in left margin]] ----- 11 | D Pinkish chert in layers up to 6" - broken into lumps. Some thin beds | of ls. at top ----| 12'| C Variously bedded but mostly thin bedded below contains Geyptosteges, | Spyridiophora ----| 7'| B Heavy bedded, mostly calcarenite ----| 26'| A Hard biohermal massive rock with fossils ghosts. Rock biohermal but | now dolomite [[end sketch]][[solid line across page]] [[vertical margin note]] 727f probably from A. [[/note]] I suspect that the ammonite beds run into bioherms from W to E West end of section in massive calcarenite with many ammonites but they are unobtainable. Lower part C = 727m Limy equivalent of D = 727n = goniatite beds This knob belongs entirely in the upper part of the Sullivan Peak member [[end of page]]
969 [[encircled]] 68 [[/encircled]] 727g - Across Hill 5305 Hess R. Horst [[sketch of geologic column in left margin of four layers with description to right]] ------ | Calcarenite massive -----| | biohermal beds -----|25 | Massive Calcarenite -----|10 | Bioherms with Scacchinella [[end of sketch]] Fusulines just 45' below crest of hill at about 5157 on south slope of narrow lobe. They are 10' over biohermal beds with Scacchinella and below other biohermal beds. [[margin note]] 5200 43 ---- 57 [[/margin note]] Location of this place 727g is just west of the high part of hill where it narrows toward the west. Lower beds here toward the ravine, perhaps 30 - 50' above it abound in large Omphalotrochus. 727h - from half way down slope 727i - High Wolfcamp. Dip slope directly from crest of 5305 down to first notch is in lowest part of Scacchinella beds. 727k - About 1/3 down from saddle on N of Hess Ranch. Fusulinid.
970 [[encircled]] 69 [[/encircled]] May 23 Wolfcamp on front Lenox Hills Hill 5250 [[Margin note]] Compass at 17° [[/margin note]] A - Ls cgl. boulders up to 2' in one direction matrix of ls with chert pebbles N45°E 17°. B Thin bedded sandy ls. with some line cobbles at base. One small algal reef [[sketch of geologic column in left margin with description on right]] Top of cgl. -----------[[solid line extends across page]] 3 sights |F 15 dark brown chert pebble cgl. - massive -----------| 15 sights |E 75 mostly cgl. sandstone yellow to yellow brown -----------| 2 sights |D 10 Covered Total cgl. = 310' -----------| 35 sights |C 175' Small chert pebble cgl. mostly dark brown, some sand, | occasional large ls. boulder at base -----------| 3 sights |B 15' -----------| 3 sights |A 15' -----------| Beds of |A^1 15' but mostly covered, algae and smooth ls at base, one algae | fritos algae mass [[end of sketch]] [[margin calculation]] 15 75 10 175 15 15 --- 305' [[/margin calculation]] Shale Measure [[sketch of geologic column in left margin with description on right]] ----------- 13 sights| G Shale with thin bands ss & limy ss. } ----------| 3 sights| F - shale capped by 4" ss } ----------| 3 sights| E shale capped by 1' band hard ss. } ==========| D - hard sandy ls with fine angular chert 1' } } 172' 6 sights| C - shale & thin bedded cgl. sandstone 1 - 2"} ----------| 1 1/2' | B - 1 1/2 fusulinid ls with goniatites } ----------| 9 sights| A - Shale } ----------| | cogl. [[end of sketch]] 65 15 15 30 45 2 --- 172' [[end of page]]
21 5 ---- 105 9 ---- 114' 5250 117 ---- 5133 70 32 15 --- 117 65 3 --- 21 13 -- 8 3 [[end of page]]
971 [[circled]]70[[/circled]] Section in Decie Ranch at 5300' in cut just East of best exposed section of Poplar tank 0-32' massive unbedded conglomerate with limestone boulders of large size up to a foot. Also with some rounded siliceous pebbles. At 10' up comes a bioherm of Scacchinella 5 feet high and about 10' wide. The 32' are overlain by ^[[5']] more unbedded cgl capped by sandy and cgl limestone Above this the yellowish shale [[in margin]] Hill 5250 ls #3 Gray ls] 32' cgl.] 15' sh ] 70' ls2 ] 15' Top of ls #2 is at 5133'el. =727p. [[/in margin]] Hill 5300 Went up gully just west of 708e In this one the sandstone near top of Sullivan Peak is capped by 40' of small pebble cgl. The pebbles well-rounded chert & quartz. Leonard 2 is 2-3' thick where we went up hill. Mostly dark calcarenite with some pebbles and a bioherm from which [[underlined]]Aphelesia[[/underlined]] was taken. = 727 o Leonard 2 swells from 6 feet at the gully just on the east side of hill 5250 to about 15-20' just below the crest of the hill which is capped by ls#3. Between L2 and L3 is 70 vertical to bottom of 3. Base of 3 is massive small pebble cgl. of about 15' thickness This is capped by gray weathering ls. 32' Ammonites occur in cgl as well as the fine grained calcarenite. 727a dipslope of hill 5250 where dips under ground, biohermal pieces with Institella 727r - Ammonites from saddle
5300 103 ---- 5197 [[end of page]]
972 [[encircled]] 71 [[/encircled]] Bed 3 forms surface of divide between knob over to base of 5300. From bed 3 to base of limestone on hill 5300 is 87', then 5' are covered and the remainder which is 8' is in hard massive fossiliferous ls. Top 3 would be at 5197 just below hill 5300. 727s - top of 5300 - rocks are a hodge - podge of types and I make nothing definite or recognizable out of it. Fossils are difficult to get. Some rock is biohemial with silicified fossils mostly corals and some sponges. The shale between 2 & 3 and 3 & hill 5300 is very fissile and platy. #3 passes laterally from hill 5250 into dark ls & chert, the cgl disappearing just east of hill 5300 the section appears like that underneath hill 5250 Under hill 5300 it is mostly chert in beds 6" thick and dark ls in beds 6" to 1' thick. 130' vertical between Leonad #1 & #2 in hill 5300. [[sketch of geologic column with description of layers]] { 40' small pebble cgl [[left margin note]] L.#1 [[/note]] { 6' ss { 20' Massive cgl ls with fossils 107' { { 5' ls { 4' pink chert { 5 massive blocky ls with silicon skin with layer pink chert { 2' cgl. { 25' massive blocky ls with silicon skin [[end of sketch]]
973 [[circled]] 72 [[/circled]] King does not map limestones on top of hill 5300 as Leonard #4. Miranda roll 6, 0 - 5 Alpa roll 5, 21 - 31 May 24 Section up Decie Ranch on hill with thick shale. This section is at about the middle of the hill [[sketch of geologic column in left margin with description on right]] -------- 22' | H Fusulinids abundant at top = 727t gray massive calcarenite with a | small bioherm a foot below the top. -------| 5' | G cobbly - mealy ls with fossils & pebbles -------| 2' | F limy shale, yellow -------| 4' | E massive calcarenite with a few scattered small pebbles -------| 7' | D yellow platy shale with 6" detrital ls. 1 1/2' below top -------| 18' | C pebble cgl, pebbles small, chert becoming calcarenite at top. -------| 8' | B calcarenite with silicious skins with bed of silty fine grained ss | 6" 2' below top -------| 32' | A One great massive ledge of ls cgl. quite variably hard, no bedding | contains boulders up to of foot with scattered small rounded or | ragged chert & quartz pebbles -------| 98' | Lenox | Hills | shale | [[end of sketch]] At west end hill much biohermal ls. with fossils, some flat bedsand thick lenses of cgl. like that below - Perhaps W.C. Thin beds chaotic near fault
974 [[encircled]] 73 [[/encircled]] 727u - 2 loose blocks from Decie Ranch E has a 2' siliceous skin On east side hill considerable yellow shale at top, also Spyridiophora suggests beginning of Poplar tank Perhaps upper 20' is Poplar Tank Dick measured in Shale on east side 138'; On west nose 124' M24 Leonard #3 has 5 1/2' of small pebble (1/4 - 1/2") cgl at base. Rest mostly dark detrital ls with goniatites at a guess about 15'. Upper part heavy bedded fine grained Calcarenite, beds up to 1' thick. About 35' of slope between 3 & 4 in cherty rock breaking into small yellow lumps. 727v - Ammonites from base of Leonard #4 Leonard 4 - Lower 10' in thick bedded dark calcarenite abounding in ammonites in patches, about 55' of slope covered by this rock 727v for ammonites 727w - patches with brachiopods Apheleoica leptodids and others. Specimens do not break out well and the material is fragmentary This is at the top of Leonard #4. 727x - bioherm of smooth green or blue gray ls, about 6' high by about 15' wide surrounded by sandstone Contains Institella and other associated fossils. bioherm looks like Split Tank ones Approximately Kings locality 30 - 31.
975 [[encircled]] 74 [[/encircled]] Miranda roll 6, 6 - 16 - Hill with large shale exposure SW end Lenox hills - view of Windmill hill Alpa roll 5, 32 - end - hill with large shale exposure SW end Lenox Hills May 25 - Montgomery Ranch Hess - first fusulines at about 4880 = 727y; fusulines at 4920 = 727z. Fusulines at top of hill 4950 - 729a First fusulines seen at 4880' on slope, 40 feet above comes another fusuline band with large Omphalotrochus. Large Omphalotrochus at crest of hill 729c - Fossil bed consists of [[geologic drawing of 3 layers with entries as follows]] ----------| 6 - 8 ' | crinoidal ls with a few fossils ----------| 15' - 18' | Silty ls. with ^[[yellow]] brown, irregular small chert masses - | occasional fossils ----------| 5 - 6' | ls cgl. small to large pebbles ----------| [[/drawing]] 729d - Algae coated fusulines near top of hill. 729e - loose piece just under first fusulinid ledge at 727y.
976 [[encircled]] 75 [[/encircled]] May 26 Packed blocks all day May 27 Packed blocks all day May 28 Finished packing, hauled blocks to R R. Went to Marfa. May 29. Cibolo Creek N44° E32° S Section opposite tributary (1st) Compass at 32°. 0 - 11 Steps - mostly covered - probably shale and yellow thin-bedded limestone 0 - 11 - Cobbles up to a foot or more, the cobbly zone of the bioherm 0 - 3 hard biohermal ls. massive In step (0 - 11 cobbles) a large bioherm appears W side of ravine. In this we took Stenoscisma and Leptodid block. It is probably 30 feet below top of W.C. Section on E bank of Arroyo. 0 - 14 covered shaly - cobbly interval 0 - 4 massive biohermal ls 0 - 9 covered probably shale 0 - 8 cobbles 0 - 6 massive biohermal - silicified fossils 0 - 11 cobbly zone mostly covered
977 [[encircled]] 76 [[/encircled]] 0 - 5 Massive limestone biohermal capped by 1 shell breccia with fusulines = 728-n Above this the beds are platy and thin with much chert. Big fusulines from side of bioherm where stream cuts closest to ridge. The fusulines are out of the lower bioherm with much yellow in it. The higher bioherm produced large Scacchinella. Collections Fusulines from above bioherm 728m Scacchinella from uppermost bioherms 728-j " " [[dittos for: Scacchinella from]] lowermost " [[ditto for: bioherms]] 728k Leptodids from lower bioherm 728-l Fusulines top of WC 728m Went from ranch house to Alta Creek to Permian outcrops along the creek. At the junction of the Alta and Cibolo Creeks is an igneous body that has baked the limestone and obliterated the fossils. A little farther on large massive beds of limestone appear which are quite massive. These overlie yellow shale and limestone perhaps 30' (vertical) above them. The massive limestones are bioherms which occur in 2 tiers, a lower and an upper one. We found Scacchinella in both sets. A possible intermediate one also occurs. In the lower one occurs large Leptodus which are fairly conical in form. We also found a multiplicate Stenocisma in both beds with a large Wellerella. What look like typical fusulines were taken from
978 [[encircled]] 77 [[/encircled]] The mealy zone under the lower bioherm which lies under the first conspicious bioherm that extends high on the hill. This is opposite the point where Alta Creek cuts closest to the Permian outcrop belt. See picture Miranda Roll 6 - 25. Alpa Roll 6, picture 11. This is the highest bioherm which juts way up into the air and is the first prominence just west of the igneous body Tig about 1 1/4 miles NE of the junction of the two creeks. The biohermal beds are capped by cherty and thin-bedded limestone and pinkish chert. The latter suggests the Skinner Ranch chert. The bioherms are in the brecciated zone of Udden which has been dated as upper W.C. on the basis of fusulines. Were it not for these I would call the brecciated zone the same as the Decie Ranch frm. Actually the fauna of the bioherms suggests Stehli's lower Bone Spring which is surely Decie Ranch in age. It is just possible that the "brecciated" beds, sponge beds and next higher limestones belong to the Skinner Ranch. Skinner says most of Cibolo limestone is high W.C. Alpa - Some pictures of Cibolo region on roll 6
979 [[encircled]] 78 [[/encircled]] May 30 Left Marfa for Van Horn which we reached at 11AM. After lunch collected at M30 locality = Turtleback, locally called 3-Mile Mtn. May 31 [[left margin 728e [[/left margin]] Went to Victorio Canyon and collected blocks all day. Climed to top of knob. The massive Bone Spring goes to about 125' of the top of the knob to about 4645' where the thin bedded material abruptly appears. The entire sequence of thick-bedded Bone Spring contains fossils like those taken just above the Hueco. Quadrochonetes and Rhupidonella, Altiplesus were seen at and near the top. Collected fusulinids at 4625' = 728o. Punctured radiator getting out of sand in Victorio Canyon. Alpa role 6 - Views of Send Siena Diablo, cacti and Victorio peak Three-Mile Mountain is definitely the correct name for the easternmost knob about 3 miles NW of Van Horn. It is often called Turtleback. According to the owner both names are applied to this hill. Labels must be checked & corrected at home. June 1 Spent day waiting for car to be repaired.
980 [[encircled]] 79 [[/encircled]] June 2 Started out for localities 731 and Newells 635. Unable to reach them because of washout in a heavy rain on Saturday. Went to 728p which is Lower in the bluff just S of entrance to D. Ranch headquarters. The fossil bed is in the lower part of the bluff at the top of heavy bedded ls and just under the thin-bedded layers. Called on on Mrs. Glover. June 3 Went to Seven Heart Gap. Take road to east about 1/2 mile N of RR station in Van Horn, farm road 1295. Entrance to Gap is lined by massive unbedded limestone varying in thickness from 10 to 30 feet. This limestone is biohermal in places and contains some algae The brachiopods are mainly broken and consist chiefly of Neophricodothris and Martinia. Saw also Hustedia "Punstospirifer", Ombonia, Stenoscisma The assemblage is clearly Capitan Above the massive bed comes about 50 feet of thin-bedded bituminous limestone with strong petroleum oder when broken. This contains small rhynchonellids but few other fossils. Lenses of limestone appear and small bioherms but fossils are generally rare. Collection 728a taken on south side Gap at entrance from just below massive bed. Coll 728r
981 [[encircled]] 80 [[/encircled]] is from the bituminous upper beds Below the massive comes thin-bedded platy ls with some chert. This limestone is not so dark and bituminous and is flatter bedded than the upper dark ls. We looked at this limestone is 2 places west of the Gap. At 7285 about 150' of this is overlain by the massive and the latter by the upper bituminous limestone. The lower limestone also contains scattered lenses and bioherms usually with abundant and detached valves of of Neophricodothyris & Martinia. The upper limestone is overlain by gypsum of the Ochan. Met a Philip W. Beckley, manager of barite workings in the gap who says all of that limestone is Lamar. This works in well with the fauna
982 [[encircled]] 81 [[/encircled]] June 4 Packed blocks and boxes all morning. Sent 2 boxes pacel post and 17 bundles & 1 box of common stone at 2603 lbs., 1 water can at 29 pounds and 3 bundles of tools at 62 pounds. Tools = 3 bars, 2 sledge hammers and one shovel.
[[page number]] 983 [[/page number]] [[image - sketched correlation section across several localities shown from left to right, D.M., LHS, LHN, WH, W of IM, LM and ST. Section shows key marker units and biostratigraphic correlation intervals.]] In ms. have a section on changes in names and name equivalents over
Work out relationship of [[underlined]] Scacchinella [[/underlined]] to Schwagerina crassitectoria - Is it reworked in the Poplar Tank. Is the Decie Ranch Scacchinella a lower zone than the Scacchinellas with [[underlined]] S. crassitectoria [[/underlined]] This must be harmonized
984 Register of blocks * 723k ---- 1. * 723l ---- 3. & 3 small *726x ---- 1 * 723o ---- 1. 722-l ---- 1 * 723t ---- 7 *727a ---- 1 * 723u ---- 2 *727d ---- 2 720d ---- 2 706e ---- 3 * 723x ---- 1 721g ---- 2 * 723v ---- 5. *727e ---- 5 * 723w ---- 7 small 719z ---- 1 * 724a ---- 3 1 small 721t ---- 1 * 724b ---- 4 small *727j ---- 3 * 723z ---- 1 small 707a ---- 1 * 724c ---- 4 *727p ---- 1 721z ---- 1 728e ---- 7 * 724d ---- 1 *728-l ---- 3 * 724j ---- 2 *728p ---- 5 * 724u ---- 3 *728q ---- 1 * 726d ---- 5 --- * 726f ---- 4 39 719x ---- 4 [[checkmark]] 720e ---- 6 * 724p ---- 4 19,200 * 726e ---- 1 * 724q ---- 1 * 724t ---- 7 * 726o ---- 5 * 726n ---- 5 * 726t ---- 3 * 726u ---- 2 703a ---- 1 * 726z ---- 5 --- 101 Total 140 blocks [[circled]] 726r - 1 check [[/circled]]
33.1 16,600 2600 ---- 137 ) 1[[strikethru]]9[[/strikethru]][[superscript]]8[[/superscript]]200 137 --- 550 411 --- 390 (132 lbs 1,9200 2250 ---- 137 )16950 137 --- 325 274 --- 510 548 --- (124 [[end page]]