Conowingo breccia (informal) (MD)
Conowingo diamictite (informal) (MD)
Informal. The rank or lithologic term should not be capitalized.
Neoproterozoic and early Paleozoic
Not designated. Occurs near Conowingo Dam on the Susquehanna River, Cecil Co., MD.
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 ([ ]).