The Tobacco Root Geological Society

Promoting the study of the geology of the Northern Rocky Mountain Province

About the TRGS

The Tobacco Root Geological Society is a private, nonprofit organization dedicated to the study of geology of the Northern Rocky Mountain Province.

Membership: to join, come to a Conference, or click here and print this page and mail it with your check. Annual Dues are $25 for Professionals and $5 for students. Your dues entitle you to a copy of Northwest Geology, which contains the annual TRGS conference Proceedings, Guidebook and Field Trip Logs. The membership year is May 1 to April 30, so if you join in April, you'll get the previous year's guidebook unless you tell us you want to apply your membership to the following year that begins May 1.

If you're not on the mailing list, to e-mail Secretary Emily Ward, and we'll be sure to add your name.



2016: 41st Annual
Tobacco Root Geological Society
Field Conference

2016: Southeast Idaho

Date: July 28-August 1, 2016

First Announcement and Call for Papers

PLEASE READ Editorial Requirements (PDF) - papers not meeting requirements will not be printed.

2017: The meeting is tentatively planned for Bozeman, MT.

2016 Scholarship Application Information
2016 Scholarship Deadline: February 15, 2016.
Please submit 2-page applications electronically.

See also information for the Gibson-TRGS Geology Field Course Award for Excellence
2013 winners announced

2015 Field Scholarship Awards

The TRGS is pleased to be able to award 14 scholarships this year, totaling $8,500, thanks to donations, sales, and investment performance. Scholarship amounts ranged from $500 to $1,000 for the Scholars.
The winners for 2015 are listed on the scholarship winners page.




Board of Directors

2016-2018 TRGS Officers
Next election: Fall 2018

  • Chairman
    Bruce Cox
  • Secretary
  • Ted Antonioli
  • Larry Johnson
  • Rob Thomas
  • Larry Smith
  • Emily Geraghty Ward
  • Mike Stickney
  • President:
  • Vice President:
  • Treasurer:
  • Corresponding Secretary:
  • Membership Secretary:
2013 Editors: Reed Lewis, Marie Garsjo, Richard Gibson         WebMaster:


Tobacco Root Geological Society

P.O. Box 118
Butte, Montana 59703-0118
A 501(c)3 non-profit organization

The color version of the TRGS logo
was designed by Brian Collins.
The original momchrome line drawing of the logo
was made by Marian Lankston in 1975.
Original Web Site design and layout
by Ann Marie Crites