Foshag, William F, Field notes, March 21-July 8, 1944

ID: SIA RU007281

Creator: Foshag, William F (William Frederick), 1894-1956

Form/Genre: Fieldbook record

Date: 1944

Citation: William F. Foshag Collection, 1923-1965 and undated

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Field notes document William Foshag's work, March 21-July 8, 1944 at Paricutín Volcano in Mexico. The first set of entries are listed by time of day. Descriptions are primarily of the Zapicho vent and discuss types of lava formation observed; changes in topography including the cone; gas clouds; and samples collected. At the time of descriptions, eruptions and earthquakes were ongoing. Includes sketches. Entries for March 26 - April 23 describe work done, presumably following flows or veins. These lists consist of a location or designated group, and are followed by numbered locations with descriptive data- - location information, water table information, presence of types of rock or material, topography, and elevations. These are followed by a table measuring paces, free, meters and direction. April 24 - July 8, consist of narrative style journal entries, and contain extended, and detailed descriptions of eruptions, smoke, and bombs (debris) sent aloft by the volcano. About a third of the notebook is blank.

Date Range


Start Date

Mar 21, 1944

End Date

Jul 08, 1944

Access Information

Many of SIA's holdings are located off-site, and advance notice is recommended to consult a collection. Please email the SIA Reference Team at


  • Geology
  • Volcanos
  • Volcanological research


  • Michoacán
  • Oropeo
  • Mexico
  • Paricutín


  • Fieldbook record
  • Field notes

Accession #

SIA RU007281

Collection name

William F. Foshag Collection, 1923-1965 and undated

Physical Description

1 field book

Physical Location

Smithsonian Institution Archives


Box 6 Folder 2