Luhr, James, Mexico, January - March, 1981

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These notes document the work of James F. Luhr related to his volcanology research in Mexico during January 30 - March 3, 1981. There is an insert of a drawing of a caldera. Entries provide information on: date, types of activity, directions to field site, specimen identifiers (e.g. M-81 - 1 A), inclusions, count, type and measurements of lithics (e.g. 20 cm scoria to surface). Locations include: Guadalajara, San Pedro Valencia, and Volcan Colima. There are drawings of landscape, stratigraphic charts with the indications where the samples were collected. There is a data set providing information on the airfall sequence and pyroclastic sections with numerical measurements (e.g. Pyr #8 (638.49) [9990]). Photos of the samples are referenced as well (e.g. photo 5 roll 8 with 387 indicated looking down). There are entries with the itineraries of the field trip in miles and kilometers.

Date Range


Start Date

Jan 30, 1981

End Date

Mar 03, 1981

Access Information

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  • Geology
  • Volcanology


  • Mexico
  • Colima, Volcán de


  • Fieldbook record
  • Field notes

Accession #

SIA Acc. 16-255

Collection name

National Museum of Natural History (U.S.), Department of Mineral Sciences, Curatorial Records, 1940-2016

Physical Description

field book

Physical Location

Smithsonian Institution Archives


Box 3 folder 5