Our Mission

The Montana Geological Society is a non-profit organization, founded in 1949 by a group of Billings-area geoscientists. The objectives of the society as stated in the bylaws are “to promote interest and research in geology and allied sciences and their practical application, and to encourage fellowship and cooperation among the members.” These objectives are met through field conferences, continuing education classes and the publication of guidebooks and symposia. The Society also hosts luncheon meetings throughout the year, which¬†feature a variety of guest lecturers.

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Membership Applications

The Montana Geological Society (MGS) is currently accepting applications for Membership! If you have an interest in geology and promoting science education in your community, MGS is the place for you. As a member of a growing community of professionals, you will have access to premier lectures, courses, and much more.

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Road Logs

Learn about the geology of the Big Sky State while using our new interactive Road Logs map, while browsing hundreds of digitized routes across the region.



To view & purchase from the Montana Geological Society’s collection of historical publications, please visit our online store.