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…
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)…
Hazards August 7, 2023 Wildfires 101 Although the US wildfire season this year doesn’t seem quite as intense as prior ones, we thought this excellent primer on how NASA, NOAA, and new technologies are helping predict and monitor wildfires around the globe.
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…
The dunes from the park entrance road in spectacular clear air after an overnight dusting of snow at Great Sand Dunes National Park. Mount Herard (13 Geology December 16, 2022 2023 Colorado Geology Calendar We’ve been wanting to put together a calendar for some time now, and 2023 seems to be the right year! The geology of Colorado and its landscapes are as varied and as colorful as any place on the planet. And, yes, we think this collection of images from our staff—with…
Flooding and erosive flows following a 2004 rainstorm caused this bridge collapse in El Paso County. East Sand Creek had been "channelized" upstream of this structure - possibly concentrating the flows and resulting in this damage. Photo credit: Colorado Geological Survey.|Bank erosion (cut bank caving) along the North Fork of the Gunnison River in Paonia Hazards, Water November 11, 2022 Case study: Fluvial Hazard Zone “The Fluvial Hazard Zone (FHZ) is defined as the area a stream has occupied in recent history, may occupy, or may physically influence as it stores and transports water, sediment, and debris.” The CGS often collaborates with local, state, and federal agencies on projects concerning emergency preparedness and community…
Matt Morgan on a cold day in the field at Titanium Ridge General 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 credit: Matt Morgan. It may not suit everyone, but here at the Colorado Geological Survey we think having a passion for rocks is a good thing.
Earthquake damage: significant cracking and displacement in adobe wall of garage Geology, Hazards August 16, 2022 The Great ShakeOut The origins of The Great ShakeOut project lie, unsurprisingly, in Southern California, one of the more seismically active regions of the country. In 2008 a group of experts collaboratively modeled what might happen when a major earthquake hits the Southern California region. The detailed report, titled…
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…
On the Cumbres & Toltec Scenic Railroad Geology Train trip General, Geology February 21, 2022 Cumbres and Toltec Geology Train We just found out about this year’s Cumbres & Toltec Geology Train adventures in southwest Colorado and northwest New Mexico. Because of the high demand in former years, there are two dates this year, 19 June and 17 September 2022. They’ll both…
Aggregate quarry near Durango Energy, Minerals, Publications February 4, 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 2020-2021 report isn’t finished quite yet, but the comprehensive bibliographic list that it is based on is. This list includes state, local and federal government sources, as well as private…