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Geologic Unit: Floyd Church

Floyd Church Formation (NC)
Floyd Church Formation of Albemarle Group (NC*)
Floyd Church Member of McManus Formation (NC)

Proterozoic, Late*
Geologic Province:
Piedmont-Blue Ridge province*

Areal Extent:

Type Locality:
Along NC Highway 8 west of Flat Swamp Mountain and northeast of High Rock Lake, Davidson Co., central NC. Named from town of Floyd Church (Stromquist and Sundelius, 1969).

Unit Name History:
Name proposed for member of Millingport Formation (Stromquist and Sundelius, 1969).
Age modified (Stromquist and Sundelius, 1975; Seiders and Wright, 1977).
Isotopic dating (Rankin and others, 1983).
Rank raised; Age modified (Milton, 1984).
NC State Geol. Map usage (Brown and others, 1985).
Rank reduced, assigned to McManus Formation (Gibson and Huntsman, 1988).
Age modified (Rankin and others, 1993).

Note: If you need more information, please contact Nancy Stamm (
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
Database project personnel
Last modified: 15-Jan-2013