Geology
November 30, 2023
2024 Colorado Geology Calendar
Following up on last year’s popular geological photo tour around the state, we’re proud to share this next collection from…
CGS
Geology
August 9, 2023
Cumbres and Toltec Geology Train
This year’s September 10th Geology Train — a very special and popular opportunity to enjoy…
Minerals
April 13, 2023
IS-85 Colorado Mineral and Energy Industry Activities 2021-2022
The current annual Colorado Mineral and Energy Industry Activities report for 2021-22 is now available. Following up on…
admin
March 1, 2023
115th Annual AASG Meeting, Glenwood Springs, Colorado
The 2023 Association of American State Geologists meeting—hosted by the Colorado Geological Survey—takes place in Glenwood…
Geology
April 21, 2022
Unfolding the Geology of the West
Our collaborators and friends up in Boulder at the Geological Society of America (GSA) are making…
Geology
March 15, 2022
Recent reports published
OF-20-11 Alkaline Complexes of the Wet Mountains Area, Colorado: A Geological Summary, Bibliography, and Data Compilation…
Energy
November 19, 2021
Case Study: geothermal gradient
The CGS has long been involved in researching the characteristics of geothermal energy across the state,…
Hazards
June 23, 2021
HAZ-2021-01 Post-wildfire Hazards
Noting that we were getting hundreds of search hits on a previous version of an info-brochure that we originally published…
Hazards
February 8, 2021
The Snowy Torrents
Here in Colorado, avalanche season is not over yet, and it’s been another deadly one with 26 fatalities so far…
Geology
November 24, 2020
Re-introducing: Historic Metal Mining Districts
As the reconstruction of our website continues, we recently redeployed a popular package of information that was compiled and made…
Hazards
October 13, 2020
Seismometer installed on campus
Mines students partner with the CGS to install seismometer on campus Colorado School of Mines geophysics students enrolled…
Water
June 7, 2020
New Colorado Groundwater Atlas released
ON-010 Colorado Groundwater Atlas
Geology
April 24, 2020
OF-19-03 Geologic Map of the La Salle Quadrangle, Weld County, Colorado
As we continue to expand geological mapping coverage of Colorado, we recently uploaded another of our…
General
January 10, 2020
Welcome to the final CGS/RockTalk web iteration
If you want to find out what's happening with the new CGS site, read here! Apologies for the incompleteness, it will improve on a daily basis, we promise!
Hazards
September 12, 2017
AEG Annual Meeting
Members of our geoscience staff are busy this week participating in the Annual Meeting of the…
Geology
June 27, 2017
OF-16-02 Geologic Map of the Watkins Quadrangle, Arapahoe and Adams Counties, Colorado
We’ve just uploaded the next of our free STATEMAP quadrangle map products to…
Hazards
May 16, 2017
AASG 2017 John C. Frye Memorial Award for CGS publication
The Association of American State Geologists announced that their annual John C.
General
May 15, 2017
OF-16-03 Colorado Rocky Mountain Front Profiles
(NOTE: We’ are currently rolling over our physical publications sales to Amazon, and we haven’t yet gotten this great poster…
Geology
April 12, 2017
OF-16-05 Geologic Map of the Longmont Quadrangle, Boulder and Weld Counties, Colorado
We just uploaded the most recent of our STATEMAP mapping products to…
Publications
February 17, 2017
IS-79 Colorado Mineral and Energy Industry Activities 2015-16
The current annual Colorado Mineral and Energy Industry Activities report 2015-16 is now available. Following up on the…
Hazards
January 23, 2017
Top-Ten paper at GSA
On May 25, 2014 the longest landslide in Colorado’s historical record occurred in west-central Colorado, six miles (10 km) southeast of the small…
Hazards
February 10, 2011
Hazardous Soils in Colorado
This educational video, produced in 2011, explores the various problems that arise from hazardous soil conditions — expansive, collapsible/compressible, hydrocompactive,…
General
February 28, 2008
The biggest, the best, the first, and the most diverse…
We have a free 8.5- x 11-inch (pdf) geologic map of Colorado containing Geo-Whizology of Colorado…
General
March 11, 1909
Mines and Minerals: the early Survey
While a number of brilliant men have in past years held the office of Colorado State Geologist, it is no…
General
March 28, 1907
Concerns about the new survey
Regarding the Colorado Geological Survey (an article appearing in the Mining Reporter, March 1907): We note that one of our…