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1909 – Colorado State Geological Survey publishes first geological map and report. 1916 – The name is changed to the Colorado Geological Survey. 1925 – The Colorado Geological Survey goes out of existence after publishing 31 Bulletins on various aspects of the geology and mineral resources (including oil shale) of Colorado.
In 2016 USGS released an assessment of the resources of the Mancos Shale of the Piceance Basin in Colorado and Utah, "a total of assessed technically recoverable mean resources of 74 million barrels of shale oil, 66.3 trillion cubic feet of gas, and 45 million barrels of natural gas liquids."
Areas of oil shale of the Green River Formation, Colorado, Utah, and Wyoming (USGS) Black shales similar to the eastern shales are widely distributed west of the Mississippi River. These include some, such as the Woodford Shale of Oklahoma , which are near-stratigraphic equivalents to the Devonian/Mississippian shales of the eastern US.
The USGS also runs or supports several regional monitoring networks in the United States under the umbrella of the Advanced National Seismic System (ANSS). [12] The USGS informs authorities, emergency responders, the media, and the public, both domestic and worldwide, about significant earthquakes.
By 1944, Rankin had concluded that most of the formations of the Colorado Group could be identified as lithostratigraphic members of the Mancos Shale as well. [3] The unit was raised to group rank by C.E. Jamison in 1911, [ 22 ] and is sometimes given group rank in New Mexico [ 23 ] and Utah [ 24 ] as well.
Laurie Wirt (1958–2006) was an American scientist working in the fields of hydrology and aquatic geochemistry. She was an activist for water conservation, and was particularly known for her advocacy in the Upper Verde River in Arizona, where she fought against groundwater pumping that threatened river flows.
This map of United States water resource subregion hydrologic units updated boundaries to include the ocean as well as the portions of the basins that cross international borders For the use of hydrologists, ecologists, and water-resource managers in the study of surface water flows in the United States, the United States Geological Survey ...
Drilling in the Wattenberg Gas Field north of Denver, 2005. Although numerous wells had drilled through the Wattenberg Field over the decades, and many drillers and wellsite geologists noticed gas “shows” (indications) in the "J" Sandstone and other strata, the "J" Sandstone and other gas-bearing formations had permeability too low to yield gas in commercial quantities.