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National Geologic Map Database
Geologic Unit: Langdon
Map showing publication footprint
  • Usage in publication:
    • Langdon shale†
  • Modifications:
    • Abandoned
Publication:

Moore, R.C., and Mudge, M.R., 1956, Reclassification of some Lower Permian and Upper Pennsylvanian strata in northern Midcontinent, IN Geological notes: American Association of Petroleum Geologists Bulletin, v. 40, no. 9, p. 2271-2278. [Available online, with subscription, from AAPG archives: http://www.aapg.org/datasystems or http://search.datapages.com]


Summary:

Pg. 2275-2276. †Langdon shale. Pillsbury shale (new) replaces Langdon shale (Condra and Reed, 1943); investigations have established Langdon shale, at its type section, as correlative with Wamego shale member of Zeandale limestone (new); accordingly name Langdon shale is abandoned.

Source: US geologic names lexicon (USGS Bull. 1200, p. 2101).


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 ([ ]).

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