Book Cliffs

 ( Bureau Of Land Management Areas In Colorado ) 

The Book Cliffs are a series of desert mountains and in western Colorado and eastern Utah in the Western United States. They are so named because the cliffs of Cretaceous sandstone capping many of the south-facing appear similar to a shelf of books.

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Stratigraphy The Book Cliffs are one of the world's best places to study sequence stratigraphy. In the 1980s, Exxon scientists used the Cretaceous strata of the Book Cliffs to develop the science of sequence stratigraphy. The Book Cliffs have preserved excellent strata of the foreland basin of the ancient Western Interior Seaway that stretched north from the Gulf of Mexico to the Yukon in the Cretaceous Period. Components of deltaic and shallow marine reservoirs are very well preserved in the Book Cliffs.

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Wildlife There are many small streams that contain a variety of trout species.

Large mammals found in the Book Cliffs include coyotes, , , mule deer, elk, black bears, pronghorn, American bison as an extension of the Henry Mountains bison herd and bighorn sheep. In January 2009, Utah Division of Wildlife Resources officials transplanted 31 bison from the Henry Mountains bison herd to the Book Cliffs. The new group joined 14 animals previously released in August 2008 from a private herd on the nearby Uintah and Ouray Indian Reservation. This herd is approximately north of the Henry Mountains across mostly harsh, desert terrain.

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See also

• List of mountains in Colorado
• List of mountains in Utah
• Roan Cliffs

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External links

• "Book Cliffs Recreation Area" at U.S. Department of Interior

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