Welcome to the Colorado Scientific Society

The oldest scientific society in the Rocky Mountain region

Founded in 1882, the Colorado Scientific Society promotes knowledge, the understanding of science, and its application to human needs, focusing primarily on earth science, and welcoming members with interests in all fields of science. Learn more.


Future Colorado Scientific Society Meetings and Field Trips

Geology of the Upper Arkansas Valley
CSS 2018 Fall Field Trip

September 15-16, 2018

Led by Karl Kellogg, Cal Ruleman, Scott Minor, Jonathan Caine, and other USGS geologists

Upper Arkansas Valley Field Trip Announcement

View to the northeast showing Leadville, Colo., from the flank of Mount Elbert and geographic features relative to the Leadville North, Colo. 7.5′ quadrangle.

Spend Two Days examining diverse Geologic features of the beautiful Upper Arkansas Valley:

  • Proterozoic sedimentation, volcanism, and plutonism
  • Laramide Orogeny structural features
  • Northern Rio Grande Rift and Upper Arkansas Valley magmatism, tectonism, and sedimentation
  • Pre-rift intrusive rocks and Oligocene and Eocene volcanic rocks
  • Glacial history and deposits including catastrophic outwash floods
  • Mineral deposits (gold, silver, copper, zinc, lead, fluorspar, and others)
  • Landslide, alluvial, mass-movement, eolian, and wetland deposits

There is something for everyone!

Logistic details are still to be worked out, but the group will spend one night at a motel, either in Salida or Buena Vista, and travel will be either be rented vans or personal car-pooling.

If you are interested in going on the trip, please contact Cal Ruleman, cruleman@usgs.gov, and let him know of your interest so he can compile a tentative list of who wants to go on the trip. We’ll share more information once it is available.


Regional geologic structure map of the Upper Arkansas Valley


From Kellogg, K.S., Shroba, R.R., Ruleman, C.A., Bohannon, R.G., McIntosh, W.C., Premo, W.R., Cosca, M.A., Moscati, R.J.,and Brandt, T.R., 2017, Geologic map of the upper Arkansas River valley region, north-central Colorado: U.S. Geological Survey Scientific Investigations Map 3382, pamphlet 70 p., 2 sheets, scale 1:50,000.
Get the full map at https://doi.org/10.3133/sim3382

Upper Arkansas Valley from the South.
View to the North from above Methodist Mountain and the northern Sangre de Christo Mountains/Poncha Block of Minor and others (2018), showing major geographic and geologic features.

Thursday, September 20, 2018
CSS Poster Session and Short Talks

Presentations of posters by CSS Members followed by short presentations by students.

Thursday, October 18, 2018

Structural Geology of Colorado

Ned Sterne

Log Cross sections in Colorado

Steve Cumella

Thursday, November 15, 2018

Department of Energy – Thoughts on Geothermal Energy

Jeff Winick
plus another talk that is not confirmed yet

October or November xx, 2018 (TBD)

Family Night at the Colorado School of Mines Geology Museum

Thursday, December 13(?), 2018

Presidents Talk: Cities at Risk

Bob Raynolds, Denver Museum of Nature and Science

March for Science, April 14, and Vote for Science

The Colorado Scientific Society took part in the March for Science in downtown Denver again this year on April 14, 2018. We had a table at the Denver Civic Center again.
This is their website:  https://www.marchforscience.com/

Read the May 2018 CSS Newsletter

Renew your membership with the
CSS 2018 Membership Form

Abstracts of Past Colo. Scientific Society Meetings

The Colorado Scientific Society was founded in 1882 as a forum for the exchange of observations and ideas on the topics of earth science. Our lecture series occurs on the third Thursday of each month, from September through May. Lecture topics largely focus on earth science, and are open to the public. In addition to our monthly lecture series, the society is also active in public service. We fund student research grants, construct and post signs that describe local geologic features, and organize and lead several field trips.

The Colorado Scientific Society usually meets on the third Thursday of the month from September through May at The Shepherd of the Hills Presbyterian Church, 11500 W. 20th Ave., Lakewood CO
Social time is at 6:30; meeting & program at 7:00
(In the summer months of June-August, too many are off in the field.)
Map for Shepherd of the Hills

Corporate Sponsorship of the Colorado Scientific Society

Corporate sponsorship helps the Society continue to provide earth science-related talks, field trips, and other events to a broad cross-section of Front Range geologists and interested people. Please accept an invitation from the Colorado Scientific Society to become a corporate sponsor, enabling us to continue and expand our programs.
Details of corporate sponsorship of the Colorado Scientific Society

The Colorado Scientific Society is an Associated Society of the Geological Society of America.

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