Pictured Cliffs Sandstone

Usage of Geologic Unit Name:
Pictured Cliffs Sandstone*

Cretaceous, Late*
Geologic Province:
San Juan basin*
Areal Extent:
Type Locality:
Not designated. Named for exposures with thousands of engraved figures in La Plata River Valley, La Plata Co, CO (Hayden, 1877).
Unit Name History:
Named for exposures in La Plata Co, CO (Hayden, 1877). Areal limits (Barnes and others, 1954; Beaumont and others, 1956; Molenaar, Baird, 1989). Mapped 1:50k in San Juan Co, NM (Scott and others, 1984).

Hayden, F.V., 1877, Ninth annual report of the United States Geological and Geographical Survey of the Territories, embracing Colorado and parts of adjacent territories, being a progress of the exploration for the year 1875: U.S. Geological and Geographical Survey, Publication of the Hayden Survey, 827 p.

Barnes, Harley, Baltz, E.H., Jr. and Hayes, P.T., 1954, Geology and fuel resources of the Red Mesa area, La Plata and Montezuma Counties, Colorado: U.S. Geological Survey Oil and Gas Investigations Map, OM-149, 1 sheet, scale 1:62,500.

Beaumont, E.C., Dane, C.H. and Sears, J.D., 1956, Revised nomenclature of Mesaverde Group in San Juan basin, New Mexico: American Association of Petroleum Geologists Bulletin, v. 40, no. 9, p. 2149-2162.

Scott, G.R., O'Sullivan, R.B. and Weide, D.L., 1984, Geologic map of the Chaco Culture National Historical Park, northwestern New Mexico [includes chapter on archaeology by W.B. Gillespie]: U.S. Geological Survey Miscellaneous Investigations Series Map, I-1571, 1 sheet, scale 1:50,000.

Mytton, J.W. and Schneider, G.B., 1987, Interpretive Geology of the Chaco area, northwestern New Mexico: U.S. Geological Survey Miscellaneous Investigation Series Map I-1777, 1 sheet with map, scale 1:24,000.

Molenaar, C.M. and Baird, J.K., 1989, North-south stratigraphic cross sections of Upper Cretaceous rocks, northern San Juan basin, southwestern Colorado: U.S. Geological Survey Miscellaneous Field Studies Map, MF-2068, 3 sheets.

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* show accepted USGS usage.
Note that data on this page contains information that has been partly revised from bibliographic resources available via the National Geologic Map Database GEOLEX:
The URL is: https://gotbooks.miracosta.edu/gonp/coloradoplateau/lexicon/picturedcliffs.htm
Last modified: 1/7/2011