Colorado Geological Survey


Tue June 3, 2014

Was The Greeley Quake A 'Frack Quake'?

A screencap from the Colorado Geological Survey's online earthquake and fault and fold map. Dark blue cirlces denote 1.60 to 2.59 magnitude quakes, bright red denotes 5.59 to 6.59.
Colorado Geological Survey

After a 3.4 magnitude earthquake hit Saturday evening near the northeastern Colorado town of Greeley, questions about its connection to oil and gas development started popping up on social media and in the blogosphere, with anti-fracking activists trying to make a link between the two.

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Wed May 28, 2014
Western Slope

Geologists: Soft Rock, Steep Slope Contributors In Collbran Mudslide

Originally published on Tue May 27, 2014 7:44 pm

This map, put together by the USGS in 1982, shows which parts of the country are most prone to landslides. The areas shaded in red have the highest landslide incidence.

The area where the Collbran mudslide happened has seen similar slides in the past. Geologists say relatively weak rock and steep terrain create a recipe for such natural disasters. Still, Colorado in general is less vulnerable to slides than wetter areas, like the west coast. Aspen Public Radio's Marci Krivonen reports.

The Colorado Geological Survey began mapping landslides near Collbran in the 1980’s. They discovered the area where this debris flow happened was prone to slides.

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Thu December 20, 2012

For The Mountains, Snow Finally Arrives And Brings Avalanche Danger With It

A remotely triggered slide from above in the Northern San Juan taken Dec 17th
CAIC Colorado Geological Survey

Avalanche danger in the mountains has ratcheted up quickly over the past week. Get ready for the possibility of high risk being the norm this season, all thanks to the warm, dry fall and late winter.

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Tue October 30, 2012

Could I Have A Sinkhole in My Backyard? New Map Tells All

One of many sinkholes in the Larimer County Red Mountain Open Space where the Lykins Formation contains thick beds of gypsum.
Colorado Geological Survey