Usage:
Cockeysville Marble (MD)
Cockeysville Marble of Glenarm Group (DE*,MD*,PA*)
Cockeysville Marble of Glenarm Supergroup (MD,PA)
Geologic age:
Cambrian to Ordovician*
Type section, locality, area and/or origin of name:
Not designated. Named from exposures at Cockeysville, Baltimore Co., MD (Williams and Darton, 1892).
Reference section: outcrop in Eastburn's quarry, south of the intersection of Route 72 and Upper Pike Creek Road in Pleasant Hill Valley, Lat. 39 deg. 44 min. 25 sec. N., Long. 75 deg. 43 min. 03 sec. W., Newark East 7.5-min quadrangle, New Castle Co., DE (Plank and others, 2000).
AAPG geologic province:
Piedmont-Blue Ridge province*
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
Asterisk (*) indicates published by U.S. Geological Survey authors.
"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).
Slash (/) indicates name conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).