Wolf Creek Valley Overlook, Mineral County (September, CGS 2025 Geology Calendar). Photo credit: Nate Rogers (CGS). Geology December 2, 2024 2025 Colorado Geology Calendar Back for the third year running, our popular annual calendar showcases a varied and beautiful photo tour around the state. We’re excited to share this next collection of photographs from current and former CGS staff members. Designed to keep you visually “in-the-know” on colorful Colorado geology, it reveals special locations…
Cover for publication SP-58 (Land of Ice) by Vince Matthews. Cropped to top half of image. Geology December 2, 2024 Land of Ice: Jaunts into Colorado’s Glacial Landscape (SP-58) Order this 11″x15″ spiral-bound book on our Amazon storefront, featuring over 600 full-color images, diagrams, maps, and road logs to exciting glacial features in Colorado! From the preface: Flowing ribbons of ice and rock sculpted much of the rugged landscape that we enjoy today. The cold…
|||||||| General June 5, 2024 Cumbres & Toltec Geology Train – June 9th, 2024 Many of you know and love the Geology Train – the Colorado Geological Survey’s twice-annual partnership with the Cumbres & Toltec Scenic Railroad offering a unique experience observing spectacular geology in Colorado and New Mexico. Our next ride departs on June 9th and tickets are still available! This June,…
The north face of Mount Lincoln (14 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 current and former staff members. Designed to keep you visually in-the-know on colorful Colorado geology, it reveals special locations throughout the year! You can order your calendar on our (new)…
On the Cumbres & Toltec Scenic Railroad Geology Train trip Geology August 9, 2023 Cumbres and Toltec Geology Train This year’s September 10th Geology Train — a very special and popular opportunity to enjoy some spectacular geology and scenery in southwest Colorado and northwest New Mexico — isn’t quite sold out! Our very own Peter Barkmann, senior hydrogeologist (emeritus) and …
Large 700-series Caterpillar mine hauling trucks at the Holcim Portland Cement plant in Florence Energy, General, Minerals, Publications 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 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…
Limestone speleothems (var. stalactite) hang from the ceiling of Glenwood Caverns General, Geology 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 Springs, Colorado, between June 11-15. The meeting is open to AASG members and its associates, as well as various government and scientific agencies. >> REGISTRATION IS NOW CLOSED…
The Flatirons overlooking Boulder Geology, Publications 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 the following special offer available to our loyal subscribers (instructions at the end of the article): As the national GSA conference takes place in Denver every few years, staff at…
Pierre Shale (gray) exposed along St. Vrain Creek in Weld County General, Geology, Publications March 16, 2022 Recent reports published OF-20-11 Alkaline Complexes of the Wet Mountains Area, Colorado: A Geological Summary, Bibliography, and Data Compilation of Critical Mineral Laboratory Results — With renewed interest in critical minerals driven by global demand and consequent shortages, the CGS funded a compilation of historical sample results and a…
MS-51 Interpretive Geothermal Gradient Map of Colorado (detail)|Onsite rig drilling for a geothermal heating/cooling or "heat pump" system in Fort Collins Energy, Geology November 19, 2021 Case Study: geothermal gradient The CGS has long been involved in researching the characteristics of geothermal energy across the state, publishing more than 30 reports on various aspects of this important renewable resource. In that regard we thought we would re-introduce some of that research and how it is accomplished. One…
Tree trunk with up-stream face scoured by debris flow Hazards, Publications 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 in 2010, we decided to issue a new, updated version: HAZ-2021-01 Post-wildfire Hazards: Mud Slides :: Debris Flows. The subject is unfortunately very relevant given the…
Avalanche snow with disturbed vegetation in runout zone. Photo credit: Colorado Geological Survey.|SP-39 The Snowy Torrents: Figure 12. Accident 81-21 Hazards, Publications February 9, 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 in the US, six in the state. In that light, we thought we would re-release a publication that highlights at least one challenging aspect of Colorado snowfall — that is,…