Hazards December 30, 2017 Swelling or expansive soils Colorado has many areas susceptible to the problems that swelling soils cause. This video gives some background on the problem.
Water Resources Investigation WRI 2017-1a Geology, Water November 15, 2017 A new Water Resources Investigation: Upper Pierre Aquifer Our friends over at the Colorado Division of Water Resources (CDWR) have just released Water Resources Investigation WRI 2017-1a, The Upper Pierre Aquifer of the Cheyenne Basin, Northeastern Colorado, Geologic Cross Sections, authored by Ralf Topper, Clinton D. Meyer, Marshall Haworth, Kevin C. Donegan, Hillary Banks,…
MI-97 LiDAR-Based Map of the Cheraw Fault Scarp. Graphic credit: Colorado Geological Survey Hazards September 12, 2017 AEG Annual Meeting Members of our geoscience staff are busy this week participating in the Annual Meeting of the Association of Environmental & Engineering Geologists taking place in Colorado Springs this year. CGS Director and State Geologist, Karen Berry, PG, is the Technical Session Moderator, the organizer of…
Dramatic landslide headscarp threatens this structure on Constellation Drive in Skyway Hazards August 14, 2017 Landslide Hazard Info for Colorado Springs Residents and Real Estate Professionals The city of Colorado Springs lies at the boundary between the Great Plains and the Front Range of the southern Rocky Mountains. Western sections of the city are underlain by weak claystones and shales that are prone to landslides. Several developed areas have experienced various degrees of damage from landslide…
The Great Colorado ShakeOut - Drop-Cover-Hold On! Hazards July 9, 2017 What to do before, during, and after an earthquake Earthquakes strike suddenly, violently, and without warning. While Colorado is not as seismically active as some places, it does have a history of earthquake activity. Identifying potential hazards ahead of time and advance planning can reduce the dangers of serious injury or loss of life from an earthquake. Repairing deep…
OF-16-02 Geologic Map of the Watkins Quadrangle Geology, Publications June 27, 2017 OF-16-02 Geologic Map of the Watkins Quadrangle, Arapahoe and Adams Counties, Colorado We’ve just uploaded the next of our free STATEMAP quadrangle map products to our online store: the Geologic Map of the Watkins Quadrangle, Arapahoe and Adams Counties, Colorado. The STATEMAP series in…
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 currently out of production, so if you would like a copy of this poster please email our publications team at askcgs@coloradogeologicalsurvey.org) Can you name the features of the endless Rocky Mountain skyline as seen from the Front Range? Where are they…
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…
OF-16-05 Geologic Map of the Longmont Quadrangle Geology, Publications April 12, 2017 OF-16-05 Geologic Map of the Longmont Quadrangle, Boulder and Weld Counties, Colorado We just uploaded the most recent of our STATEMAP mapping products to our online store: the Geologic Map of the Longmont Quadrangle, Boulder and Weld Counties, Colorado. The STATEMAP series in general provides a detailed description of the…
IS-79 Colorado Mineral and Energy Industry Activities 2015-2016 Energy, Minerals, Publications February 18, 2017 IS-79 Colorado Mineral and Energy Industry Activities 2015-16 The current annual Colorado Mineral and Energy Industry Activities report 2015-16 is now available. Following up on the 2014 report, this report, based on 2015 production data, sketches a comprehensive overview of Colorado’s mineral resource production. Of note is the fact that total value of…