Wisconsin Geological Society (WGS)

Welcome to the official website of the Wisconsin Geological Society, Inc. (WGS)

Trilobite on Silurian
            Dolostone Wisconsin SilhouetteFounded in 1936, WGS offers a variety of ways to increase understanding of our planet. The purpose of WGS is to create an interest in the study of geology; to provide the means for the development of knowledge in geology; and to disseminate information concerning all phases of geology.

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Meetings are held on the the 2nd Monday of the month at 7pm September - June
Immaculate Heart of Mary Church Hall (South end, Hall, downstairs).
1212 S. 117th St., West Allis

         Come and See the show!               
WGS is a member of the Midwest Federation of Mineralogical and Geological Studies (MWF) which is a part of the American Federation of Mineralogical Societies (AFMS).

WGS is a proud recipient of the MWF All American Club Gold Medal award in 2014.

Wisconsin State Fossil:
The Wisconsin Geological Society proposed a state fossil in 1985 to encourage interest in our geological heritage. The trilobite (pronounced "TRY-low-bite") is an extinct marine arthropod that was common in the warm, shallow salt sea that periodically covered Wisconsin hundreds of millions of years ago.


  • Respect private and public property.
  • Always get permission when collecting on private land.
  • Follow current government regulations when collecting on public land.
  • Before collecting make sure you find out any restrictions for the type of collecting that you can do ( surface only, hand equipment, etc. ) and any limitations of quantities.
  • Leave the area in the same or better condition than you found it in when you arrived.