Category:Morrison Formation

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English: The Morrison Formation is a sequence of Late Jurassic sedimentary rock that is found in the western United States.
  • It is centered in Wyoming and Colorado, with outcrops in Montana, North Dakota, South Dakota, Nebraska, Kansas, the panhandles of Oklahoma and Texas, New Mexico, Arizona, Utah, and Idaho. *Equivalent rocks, under different names, are found in Canada.
  • It covers an area of 1.5 million square km (600,000 square miles), although only a tiny fraction is exposed and accessible to geologists and paleontologists. Over 75% is still buried under the prairie to the east and much of the rest was destroyed by erosion as the Rocky Mountains rose to the west.

Subcategories

This category has the following 4 subcategories, out of 4 total.

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