Geological Society of America

The Geological Society of America (GSA)[a] is a nonprofit organization dedicated to the advancement of the geosciences.

[3] 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.

The society has six regional sections in North America, three interdisciplinary interest groups, and eighteen specialty divisions.

GSA also publishes three book series: Special Papers, Memoirs, and Field Guides.

"[8] For example, in 2006, the GSA adopted a Position Statement on Global Climate Change: Past presidents of the Geological Society of America:[10]

The Geological Society of America building in Boulder, Colorado, U.S., from above, c. 2013
Geological field excursion to Harpers Ferry, West Virginia, April 30, 1897, following the George Huntington Williams Memorial Lectures delivered by Sir Archibald Geikie at Johns Hopkins University. The photograph was taken by Joseph S. Diller at Jefferson Rock , above Harpers Ferry . Individuals in photo include (starting at top): Cleophas C. O'Harra, Sir Archibald Geikie , Frederick H. Newell , Henry B. Kümmel , George Burbank Shattuck, Rollin D. Salisbury , Arthur Clifford Veatch, Louis Marcus Prindle, Harry F. Reid , Charles R. Van Hise , Cleveland Abbe, Jr. , George Willis Stose, Thomas Leonard Watson, Edward Vincent D'Invilliers, Clarence Wilbur Dorsey, Frederick J.H. Merrill , Louis A. Bauer , Arthur Coe Spencer, William J. McGee , William B. Clark , Rufus Mather Bagg, Frank Hall Knowlton, Robert T. Hill , Heinrich Ries , Frank D. Adams , Arthur P. Coleman , Timothy William Stanton, Oliver L. Fassig , Samuel F. Emmons , George F. Becker , Albert Berthold Hoen, George O. Smith , James F. Kemp , Bailey Willis , David White , Edward Bennett Mathews, Charles D. Walcott , John W. Powell , Joseph Stanley-Brown, Joseph Austin Holmes , Charles Willard Hayes, Leonidas Chalmers Glenn, Henry S. Williams .