The Geological Society of America (or GSA) is a nonprofit organization dedicated to the advancement of the geosciences. The society was founded in New York in 1888 and has been headquarted at 3300 Penrose Place, Boulder, Colorado since 1968. As of 2004, the society has over 16,000 members in more than 85 countries. The stated mission of GSA is "to advance the geosciences, to enhance the professional growth of its members, and to promote the geosciences in the service of humankind". Its main activities are sponsoring scientific meetings and publishing scientific literature, particularly the GSA Bulletin and the journal Geology. It also publishes a monthly newspaper, GSA Today. The society has six regional sections in North America and fifteen specialty divisions.
The GSA began with 100 members under its first president, James Hall. Over the next 43 years it grew slowly but stably to 600 members until 1931, when a $4 million endowment from 1930 president R.A.F. Penrose, Jr. jumpstarted the GSA's growth, until its to grow staggeringly to its current membership and helping purchase its permanent home in Boulder.
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