Foshag, William F. Field notes, November 28, 1943-December 8, 1944, Includes pencil drawings of Paricutin by Foshag

ID: SIA RU007281

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

Form/Genre: Fieldbook record

Date: 1943-1944

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

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The notebook documents William Foshag's work at Paricutín Volcano and Mesa de Los Hornitos in Mexico, November 28, 1943 - December 8, 1944. Pages are numbered, and includes sketches, cross sections, diagrams, and news clippings. First notes relate to pahoehoe lava observed at Pedregal and Paricutín, Mexico. Includes sketches of lava structure and Zapicho vent of Paricutín. At page 7, Foshag enters dated, narrative style journal entries describing Paricutín. Foshag highlights details by including keywords in the left-hand margin of the entries relating to information like tremors, ash, bombs, odor, vapor, arcs, explosions, and specific flows. Details include appearance of the cone, emanating clouds, the Zapicho vent, terrain and changes to it, work done with colleagues (includes names), daily activities, information about reports, campsites, types of rocks observed, and specimens collected. Some entries include information recorded with distances or time periods. Includes pencil drawings of Paricutín Volcano and a copy of official correspondence in Spanish.

Date Range


Start Date

Nov 28, 1943

End Date

Dec 08, 1944

Access Information

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  • Geology
  • Volcanos
  • Volcanological research


  • Mexico
  • Paricutín


  • Fieldbook record
  • Field notes
  • Clippings (information artifacts)

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 3