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…
admin
September 12, 2022
Introducing our new Director
Matt Morgan, Colorado Geological Survey, Director and Colorado State Geologist, Red Rocks Park, Morrison, Colorado, July 2022. Photo…
Hazards
March 25, 2022
CGS Seismic Stations
Early History The Colorado School of Mines first acquired and installed a single three-component seismograph in the…
General
March 9, 2022
Tale of the Bear Creek Meteorite, Jefferson County, Colorado
By Matthew Morgan, Deputy Director, Colorado Geological Survey and Gary Curtiss, Lakewood geologist and meteorite collector A…
Minerals
February 3, 2022
IS-84 Colorado Mineral and Energy Industry Activities 2020-2021 – bibliography
Every year, the CGS Minerals section prepares a comprehensive survey of the mineral and energy industries across the state. The…
Water
January 14, 2022
Case Study: stormwater
Stormwater runoff is excess water associated with a rain or snow storm event that flows over the…
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…
Geology
June 3, 2021
New GIS data and maps
For those of you who are subscribers to the CGS announcement list, we want to direct your attention to a…
Geology
April 26, 2021
Recent STATEMAP quadrangles
The CGS actively participates in the STATEMAP portion of…
Geology
April 15, 2021
A few new publications
For those of you who are recent subscribers to the CGS mailing list, we wanted to direct your attention to…
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…
Geology
September 9, 2020
Recent STATEMAP quadrangles
The CGS actively participates in the STATEMAP portion of…
Geology
July 22, 2020
Field Safety
It's field mapping time, and much of our staff are out in several different areas of the state, doing field work. A majority of the field work is part of the STATEMAP program—preparing geologic maps of particular quadrangles for the US Geological Survey sponsors of that nation-wide program.
Hazards
July 14, 2020
Colorado Scientific Society lecture online
TITLE: Historic Avalanches in Hinsdale County, Colorado: Impacts to Lake City, old mining dams, and new evidence for the association…
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…
Hazards
March 20, 2020
Trenching the Cheraw Fault in Southeastern Colorado
One of the missions of the CGS is to better understand the various geological risks that face the residents of…
Energy
February 18, 2020
Colorado’s Uranium Deposits
[Ed: this document, written in 2011 by Jim Burnell, Ph.D., P.G. (former Senior Minerals Geologist, Colorado Geological Survey), provides an…
Geology
February 10, 2020
DMNS Meteorite Collection
The Meteorite Collection of the Denver Museum of Nature & Science publication
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!
General
December 13, 2019
Quote: Robert Frost, geohazards expert
Not only sands and gravels Were once more on their travels, But gulping muddy gallons…
Geology
October 16, 2019
Creede: The Last Boom Town
This RMPBS/Colorado Experience video explores the vibrant mining history of Creede, Colorado.
Energy
August 14, 2018
Geology of Uranium Deposits in Colorado
Uranium is a widespread and ubiquitous element. It has a crustal abundance of 2.8 parts per million, slightly more than…
Hazards
July 12, 2018
Collapsible Soils
By Jonathan White, Senior Engineering Geologist, Emeritus At the end of the 19th and beginning of…
Geology
April 28, 2018
Quote: Creative geologic ideas?
No Geologist worth anything is permanently bound to a desk or laboratory, but the charming notion that true science can…
Geology
March 24, 2018
A Brief History of Colorado Through Time (Geology of Colorado)
One of the many fascinating videos from our geo-friends up the road at University of Colorado-Boulder:…
Minerals
February 19, 2018
What are diamonds?
Diamonds are formed from pure carbon, one of the most abundant elements on planet Earth. Diamonds, even from ancient times,…