Stratigraphy of the Dinosaur National Monument Region

Click on any stratigraphic name for more information.
Dinosaur National Monument stratigraphy
Dinosaur National Monument

Click here to see a collection of historic images of what is now Dinosaur National Monument taken by the Powell Expedition of 1872. Website images include both standard photograph and 3D views (as anaglyphs - requiring red-and-cyan 3D viewing glasses).

Click here to take an image tour of Dinosaur National Monument (3D or standard photography).

This view show part of the Canyon of Lodore where rocks of the Uinta Mountain Group crop out along the Green River in Dinosaur National Monument. To learn more about Dinosaur National Monument, check out the National Park Service website at:

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Generalized stratigraphy after Gregson, J. D. and Chure, D. J., 2000, Geology and Paleontology of Dinosaur National Monument, Utah-Colorado: In Geology of Utah's Parks and Monuments, Sprinkel, D.A., Chidsey, T. C., and Anderson, P. B., editors, Utah Geological Association Publication 28., p. 155-188.

Stratigraphic unit information is modified from the USGS GeoLex (Lexicon of Geology):

Information about the Geologic Time Scale is available at:

The URL is:
Last modified: 1/7/2011
Mesaverde Sego Buck Tongue Castlegate Mancos Frontier Mowry Dakota Cedar Mountain Morrison Stump Entrada Carmel Glen Canyon Nugget Navajo Chinle Moenkopi Park City Weber Morgan Round Valley Doughnut Humbug Madison Lodore Uinta