Geological Society of America
nonprofit organization for the advancement of geoscience

The Geological Society of America (GSA) is a nonprofit organization dedicated to the advancement of the geosciences.
History
The society was founded in Ithaca, New York, in 1888 by Alexander Winchell, John J. Stevenson, Charles H. Hitchcock, John R. Procter and Edward Orton and has been headquartered at 3300 Penrose Place, Boulder, Colorado, US, since 1967.
GSA began with 100 members under its first president, James Hall. In 1889 Mary Emilie Holmes became its first female member. It grew slowly but steadily to 600 members until 1931, when a nearly $4 million endowment from 1930 president R. A. F. Penrose Jr. jumpstarted GSA's growth. As of December 2017, GSA had more than 25,000 members in over 100 countries.
The society has six regional sections in North America and twenty-two scientific divisions. The oldest such regional interest group is the Cordilleran section, which first met December 29–30, 1899 at the California Academy of Sciences in San Francisco. At the time, travel back east was difficult for western geologists during that period of the year.
The public source identifies “Geological Society of America” as nonprofit organization for the advancement of geoscience. This brief keeps that definition visible, then builds a research path around Geological, Society and America.
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Chronology, provenance and viewpoint should be read together before a broad social or political interpretation is accepted. The source revision retrieved here is dated Aug 26, 2026. The linked authority identifier is Q1503216. VIAF identifies the subject as 126513658. The Library of Congress control number is n80126153. 1 of 4 selected statements include explicit references; 1 carry qualifiers and 0 use preferred rank. The first chronological checks are 1888, 1967, 1889 and 1931.
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This entry incorporates text from “Geological Society of America” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.