GEOLEX database Geologic Unit: Mesa Redondo Usage: Mesa Redondo Member of Chinle Formation (AZ*) Age: Triassic, Late* Geologic Province: Black Mesa basin* Areal Extent: AZ(ne)* Type Locality: Type section: north side of Little Colorado River, 1 to 3 mi east of State Highway 260, about 16 mi northwest of Concho, Apache Co., AZ (Cooley, 1958). Unit Name History: Name proposed for member of Chinle Formation (Cooley, 1958). Overview; Limited areally to the southern Defiance Plateau (Repenning and others, 1969). Note: If you need more information, please contact Nancy Stamm (nstamm@usgs.gov). Asterisks (*) indicate usage by the U.S. Geological Survey. Other usages by state geological surveys. "No current usage" implies that a name has been abandoned or that it has fallen into disuse. Former usage and, if known, replacement name given in parentheses (). Slashes (/) indicate unit name usage violates the 1983 North American Stratigraphic Code. This violation may be explained within brackets ([ ]). U.S. Department of the Interior, U.S. Geological Survey, Reston, VA, USA URL http://ngmdb.usgs.gov/ngmdb/ngm_catalog.ora.html Database project personnel Last modified: 7-Jan-2007