Large 700-series Caterpillar mine hauling trucks at the Holcim Portland Cement plant in Florence
Large 700-series Caterpillar mine hauling trucks at the Holcim Portland Cement plant in Florence

Energy, General, Minerals, Publications

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 the 2020-21 report, this report is based on 2021 production data with additional reported news from 2022. It provides a comprehensive snapshot of Colorado’s mineral resource…

OF-22-16D Digital Compilation of Surficial and Bedrock Geology of the Montrose 30x60 Minute Quadrangle
OF-22-16D Digital Compilation of Surficial and Bedrock Geology of the Montrose 30x60 Minute Quadrangle

General, Geology, Publications

New Colorado 30×60 minute quadrangle datasets

Underwritten with special supplemental funding though the US Geological Survey (USGS) STATEMAP Program, we digitized, re-compiled, and quality-controlled several previously-published 30×60-minute geologic map quadrangles as GIS data packages. In addition to the information the original 1:100,000-scale maps, data from more recent 1:24,000-scale (7.5 minute) CGS quadrangle mapping was merged…

North Table Mountain stands between Golden and the wider Denver metro area in the background. Photo credit: Vince Matthews for the CGS.
North Table Mountain stands between Golden and the wider Denver metro area in the background. Photo credit: Vince Matthews for the CGS.

Geology, Publications

Golden Rocks: The Geology and Mining History of Golden, Colorado

We’ve received the go ahead to help distribute this marvelous (and FREE!) 100+ page digital publication from the talented and insightful Donna Anderson and Paul Haseman. Their passion for geology and for communicating the fascinating and often surprising facts about Golden and its geologic history show through every page…

Check dams along drainage ditch
Check dams along drainage ditch

Hazards, Water

Case Study: stormwater

Stormwater runoff is excess water associated with a rain or snow storm event that flows over the land surface and is measurable in a downstream river, stream, ditch, gutter, or pipe. From a regulatory perspective, stormwater is managed through some sort of engineered conveyance and is focused…

Detail from one of over 600 Denver Basin geophysical and lithological logs included in the ON-OF-78-08M digitization project. Photo credit: Colorado Geological Survey.
Detail from one of over 600 Denver Basin geophysical and lithological logs included in the ON-OF-78-08M digitization project. Photo credit: Colorado Geological Survey.

Geology, Minerals, Publications

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 handful of new maps and recently digitized analog data sets that we haven’t otherwise publicized. These include several important online GIS maps and downloadable data packages:…

Mining town
Mining town, Eureka, San Juan County, Colorado, circa 1900. Photo credit: William Henry Jackson. CGS media archive.

Geology, Minerals, Publications

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 available by former CGS Senior Minerals Geologist, Mr. James Burnell, during the 2010s. Referencing a variety of sources, Burnell researched most of the major districts around the state. Each district…

OF-16-03 Colorado Rocky Mountain Front Profiles (detail)|OF-16-03 Colorado Rocky Mountain Front Profiles (detail)|OF-16-03 Colorado Rocky Mountain Front Profiles (detail)|OF-16-03 Colorado Rocky Mountain Front Profiles (detail)|OF-16-03 Colorado Rocky Mountain Front Profiles
OF-16-03 Colorado Rocky Mountain Front Profiles (detail)|OF-16-03 Colorado Rocky Mountain Front Profiles (detail)|OF-16-03 Colorado Rocky Mountain Front Profiles (detail)|OF-16-03 Colorado Rocky Mountain Front Profiles (detail)|OF-16-03 Colorado Rocky Mountain Front Profiles

General, Geology, Publications

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 in stock at the Amazon fulfillment center for shipping as of yet. We hope to issue an updated version at some point in 2023!) Can you name the features…