Usage:
Cardiff Metaconglomerate (VA)
Cardiff Metaconglomerate of Glenarm Group (MD*,PA*)
Cardiff Conglomerate of Glenarm Supergroup (PA)
Geologic age:
Middle and/or Late Ordovician (Wihterockian; Chazyan)*
Type section, locality, area and/or origin of name:
Near Cardiff, Harford Co., northeastern MD (Mathews, 1904)
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 ([ ]).