Point Lookout Sandstone

Usage of Geologic Unit Name:
Point Lookout Sandstone of Mesaverde Group*
Cretaceous, Late*
Geologic Province:
Paradox basin*
San Juan basin*
Areal Extent:
Type Locality:
Not designated. Named for Point Lookout, about 7 1/2 mi southwest of Mancos, Montezuma Co, CO (Collier, 1919).
Unit Name History:
Named basal formation of Mesaverde Group (Collier, 1919). Revised (Allen and Balk, 1954; Hayes and Zapp, 1955; Beaumont and others, 1956). Areal limits (Cavaroc and Flores, 1984).


Collier, A.J., 1919, Coal south of Mancos, Montezuma County, Colorado, IN Contributions to economic geology, 1918; Part 2, Mineral fuels: U.S. Geological Survey Bulletin, 691-K, p. K293-K310.

Allen, J.E. and Balk, R., 1954, Mineral Resources of Fort Defiance and Tohatchi quadrangles, Arizona and New Mexico: New Mexico Bureau of Mines and Mineral Resources Bulletin, no. 36, 192 p.

Hayes, P.T. and Zapp, A.D., 1955, Geology and fuel resources of the Upper Cretaceous rocks of the Barker Dome-Fruitland area, San Juan County, New Mexico: U.S. Geological Survey Oil and Gas Investigations Map, OM-144, 2 sheets, 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.

Cavaroc, V.V. and Flores, R.M., 1984, Lithologic relationships of the Upper Cretaceous Gibson to Cleary stratigraphic interval; Gallup coal field, New Mexico: International Association of Sedimentologists Special Publication, no. 7, p. 197-215

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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/mesaverde_lookoutpoint.htm
Last modified: 1/7/2011