Kurupa Sandstone of Endicott Group (AK*)
Mississippian, Early*
Exposures on highest point in Kurupa Hills, in sec. 1, T. 34 N., R. 17 E. [Killik River quadrangle] AK (Mull and others, 1987).
Reference section: exposures in canyon of Akmalik Creek, 2 mi (3.2 km) southwest of Kikiktat Mountain, in sec. 30, T. 12 S., R. 10 W., Umiat Prime Meridian [Killik River quadrangle] north-central AK (Mull and others, 1987).
Alaska Northern region*
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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 ([ ]).