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…
Looking northwest to Hells Kitchen from Ekkert General, Geology, Publications April 26, 2021 Recent STATEMAP quadrangles The CGS actively participates in the STATEMAP portion of the US Geological Survey’s National Cooperative Geologic Mapping Program (NCGMP), a nation-wide effort to generate comprehensive…
Mining town, Eureka, San Juan County, Colorado, circa 1900. Photo credit: William Henry Jackson. CGS media archive. Geology, Minerals, Publications 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 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…
While Glendon Rewerts begins the excavation that will host the site Hazards October 14, 2020 Seismometer installed on campus Mines students partner with the CGS to install seismometer on campus Colorado School of Mines geophysics students enrolled in Assistant Professor Ebru Bozdag’s Earthquake Seismology class have a literal ear to the ground for the next few weeks. With help from two CGS employees, Kyren…
The classic afternoon thunderstorm forming over South Park can make field work ... complicated! Antero Reservoir Northeast quadrangle General, Geology, Publications September 9, 2020 Recent STATEMAP quadrangles The CGS actively participates in the STATEMAP portion of the US Geological Survey’s National Cooperative Geologic Mapping Program (NCGMP), a nation-wide effort to generate comprehensive…
Colorado is well-known for the violence of summer afternoon thunderstorms that can be extremely dangerous 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.
Looking up the avalanche chute along Henson Creek in Hinsdale County 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 of snow-and-rock avalanches as a means of forming rock glaciers Jon Lovekin, one of our engineering geologists will make a Zoom presentation on the unprecedented geohazard that unfolded during the…
The Arikaree River at Beecher Island in Yuma County Publications, Water June 7, 2020 New Colorado Groundwater Atlas released ON-010 Colorado Groundwater Atlas
OF-19-03 Geologic Map of the La Salle Quadrangle Geology, Publications 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 STATEMAP 7.5-minute, 1:24,000 quadrangle mapping products to our online store: OF-19-03 Geologic Map of the La Salle Quadrangle, Weld County, Colorado. Our…