Usage:
Dargan Member of Tomstown Formation (MD,PA,WV)
Geologic age:
Early Cambrian
Type section, locality, area and/or origin of name:
Type section: along C&O Canal and adjacent Lime Kiln Road, 1.5 mi northwest of village of Dargan, Washington Co., MD (Brezinski, 1992).
AAPG geologic province:
Appalachian basin
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 ([ ]).