Usage:
Andreas Red Beds (PA*)
Geologic age:
late Silurian (Pridoli) or early Early Devonian (Lochkovian)*
Type section, locality, area and/or origin of name:
Type locality: quarry of William Loch 0.5 mi southeast of Andreas, on east side of small stream, and about 0.25 mi northeast of quarry of J. Rudolph, (Hamburg quadrangle) Schuylkill Co., PA. [Upper and lower boundary concealed.] Origin of name not stated by author, but probably named for the town of Andreas (Swartz and Swartz, 1941).
Reference section: in active quarry 3,700 ft due south of Andreas, PA (Epstein and Lyttle, 1993).
AAPG geologic province:
Appalachian basin*
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 ([ ]).