GEOLEX database Geologic Unit: Maverick Usage: Maverick Shale of Mazatzal Group (AZ) Maverick Shale (AZ) Maverick Formation of Mazatzal Group (AZ) Age: Proterozoic, Early Geologic Province: Basin and Range province Areal Extent: AZ(c) Type Locality: Type section: east wall of Maverick Basin, in northwest part of Mazatzal Mountains [approx. Lat. 34 deg. 06 min. N., Long. 111 deg. 31 min. W., Table Mountain 7.5-min quadrangle, Yavapai Co., AZ] (Wilson, 1939). Unit Name History: First used (Butler and Wilson, 1938). Named (Wilson, 1939). Age modified; Revised to middle formation (of 3) of Mazatzal Group (Karlstrom and Conway, 1986). 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