August 18, 2021
IS-83 Colorado Mineral and Energy Industry Activities 2019-2020
The next edition of our annual Colorado Mineral and Energy Industry Activities report is ready for download. This edition is…
Search
August 12, 2021
MIN-1965-01 Compilation of Colorado Bureau of Mines Annual Reports 1896-1965
Initially digitized by Archive.org, this historically important collection documents in detail the history of mining in the…
July 23, 2021
OF-20-09 Review of the Jefferson County Water Supply Policies and Analyses for Land Development in Mountain Areas
This CGS review, requested by Jefferson County Planning and Zoning, focuses on groundwater/aquifer quality and quantity issues, and provides comprehensive…
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…
June 21, 2021
HAZ-2021-01 Post-wildfire Hazards: Mud Slides :: Debris Flows
With the incidence of catastrophic wildfires increasing in many areas of Colorado, the US, and the world, we decided to…
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…
April 8, 2021
OF-20-11 Alkaline Complexes of the Wet Mountains Area, Colorado: A Geological Summary, Bibliography, and Data Compilation of Critical Mineral Laboratory Results
The report extends information on three particular mineral deposits in the area comprising the Wet Mountains of…
April 6, 2021
OF-18-12 Geology and Groundwater Resources of Elbert County, Colorado
This report provides a regional overview with the general public in mind, although it contains detailed background that is beneficial…
March 30, 2021
RS-48 Beach Placer Mineral Deposits along Localized Paleoshorelines of the Western Interior Seaway, Upper Cretaceous Fox Hills Sandstone, Eastern Denver Basin, Colorado
This report is the result of a limited investigation — led by the CGS during 2018 and 2019 — into…
March 17, 2021
ON-007-03M Mineral Resource Potential Derivative (Map)
Mineral resource potential derivative maps were generated using 7.5 minute quadrangles published under the CGS STATEMAP geological mapping program.
March 4, 2021
ON-010-02M Colorado Statewide Alluvial Aquifer (Map)
This GIS map is of alluvial deposits along streams and rivers throughout Colorado that have the potential for forming alluvial…
March 4, 2021
ON-010-02D Colorado Statewide Alluvial Aquifer (Data)
This GIS mapping project created a 1:50,000 map of alluvial deposits along streams and rivers throughout Colorado — deposits with…
March 4, 2021
ON-010D Colorado Groundwater Atlas (Data) – v20210304
This data package is comprised of GIS data as of 04 March 2021 as well as all tables and figures…
March 4, 2021
ON-010M Colorado Groundwater Atlas (Map) – v20210304
This map is comprised of statewide GIS data compiled as of 04 March 2021. Online GIS resource. ON-010M (Note: “Add…
February 22, 2021
OF-19-05 Geologic Map of the Hells Kitchen Quadrangle, Delta and Mesa Counties, Colorado
The purpose of this publication is to describe the geology, geologic resources, and geologic hazards of this 7.5-minute quadrangle. It…
February 15, 2021
ON-B-40D Radioactive Mineral Occurrences of Colorado and Bibliography (Data)
The data comprising this GIS and data download, digitized in 2020, is a partial compilation of the 1978 CGS publication…
February 15, 2021
ON-B-40M Radioactive Mineral Occurrences of Colorado and Bibliography (Map)
The data comprising this GIS map was digitized in 2020 and is a partial compilation of the 1978 CGS publication…
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…
February 4, 2021
OF-20-05 Geologic Map of the Greeley Quadrangle, Weld County, Colorado
Continuing our ongoing mapping efforts along the Front Range Urban Corridor region of the state, this…
February 1, 2021
OF-20-03 Geologic Map of the Bracewell Quadrangle, Weld County, Colorado
The purpose of this report is to describe the geology, geologic resources and geologic hazards of this 7.5-minute quadrangle located…
December 1, 2020
OF-20-08 Earthquakes in Colorado
This informative brochure includes a map of Colorado and helpful information about the causes and effects of earthquakes, as well…
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…
November 12, 2020
ON-007-08M Historic Metal Mining Districts of Colorado (Map) – v20201112
This GIS map contains the most current information for this project and is comprised of GIS data and written documentation…
November 12, 2020
ON-007-08D Historic Metal Mining Districts of Colorado (Data) – v20201112
This is the most current downloadable data package for this project and is comprised of GIS data and written documentation…
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…
August 24, 2020
ON-OF-78-08M Select geological logs associated with coal resources, Denver and Cheyenne Basins, Colorado
We recently digitized and created a GIS map to access an important analog dataset associated with a 1978 CGS publication…
August 20, 2020
ON-008-04D U.S. Forest Service Abandoned Mine Land Inventory Project – Colorado (Data) – v20200820
This is the most current downloadable data package for this historic project and is comprised of GIS data collected in…