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…
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…
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…
Mount Garfield from Interstate-70 General January 10, 2020 Welcome to the final CGS/RockTalk web iteration If you want to find out what's happening with the new CGS site, read here! Apologies for the incompleteness, it will improve on a daily basis, we promise!
General December 13, 2019 Quote: Robert Frost, geohazards expert Not only sands and gravels Were once more on their travels, But gulping muddy gallons Great boulders off their balance Bumped heads together dully And started down the gully. Whole capes caked off in slices. I felt my standpoint shaken…
West Salt Creek rock avalanche viewed from the air General, Hazards, Publications May 16, 2017 AASG 2017 John C. Frye Memorial Award for CGS publication The Association of American State Geologists announced that their annual John C. Frye Memorial Award for 2017 is granted to the CGS and the staff members who authored the report The West Salt Creek Landslide: A Catastrophic Rockslide…
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 May 15, 2017 OF-16-03 Colorado Rocky Mountain Front Profiles NOTE: This poster is available as a high resolution PDF download. Hard copies are available for sale through our neighbors at Dinosaur Ridge, by visiting their gift shop: Can you name the features of the endless Rocky Mountain skyline as seen from the…
Headscarp of an ongoing landslide in the now-shuttered Pikeview Quarry in El Paso County General May 13, 2017 Welcome to the CGS RockTalk blog We’ve decided to revive one of our most popular print publications — RockTalk — as a blog so that we can continue to bring you interesting, informative, and timely postings related to our mission. This year, 2017, will see 110 years since the founding of the CGS. The first…
Free 8.5- x 11-inch map of Colorado geology (front) along with Geo-Whizology (back). General, Geology, Publications February 28, 2008 The biggest, the best, the first, and the most diverse… We have a free 8.5- x 11-inch (pdf) geologic map of Colorado containing Geo-Whizology of Colorado on the reverse side. Of course, we’re a bit biased, but we think Colorado has magnificent geology and it is beautifully displayed for all to see. The state holds many…
Bohemian karst (Český kras) landscape formed in a limestone of Silurian and mainly Devonian age. The area hosts several international stratotype and parastratotype sections General March 4, 2005 Dr. Cílek on the Bohemian karst Dr. Cílek, the Director of the Czech Republic’s Academy of Sciences Institute of Geology delivers a fascinating talk about the Bohemian Karst region of the Czech Republic, around Beroun, that weaves the human historical, mystical, and mythological elements…
Historical postcard "Prospecting in Leadville" General, Minerals March 11, 1909 Mines and Minerals: the early Survey While a number of brilliant men have in past years held the office of Colorado State Geologist, it is no disparagement to them to say that their work produced few tangible or lasting results. The fault was the state’s and her legislatures’ previous to that of 1907. Limited by niggardly…
Boulder oil field, 1915. Photo credit: C. L. McClure and the Denver Public Library. General, Geology March 29, 1907 Concerns about the new survey Regarding the Colorado Geological Survey (an article appearing in the Mining Reporter, March 1907): We note that one of our contemporaries, in recently commenting on the University bill creating a State Geological Survey of Colorado — the bill reported favorably on by the joint Senate and House mining committee —…