- Usage in publication:
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- Pierson Point shale bed
- Modifications:
-
- Original reference
- Dominant lithology:
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- Shale
- AAPG geologic province:
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- Forest City basin
Summary:
Pg. 80. Pierson Point shale bed of McKissick Grove shale member of Wabaunsee formation. Basal bed of McKissick Grove. Bluish argillaceous shale and some sand; upper part, and at places lower part, nearly black. Thickness 8 to 10 feet in southeastern Nebraska and eastern Kansas. Overlain by Maple Hill limestone and underlain by Tarkio limestone member. Age is Late Pennsylvanian (Missouri age). Report includes cross sections, measured sections, geologic maps, stratigraphic tables.
Named from Pierson's Point, southeast of Falls City, southeastern NE.
[Piersons Point, Lat. 40 deg. 01 min. 51 sec. N., Long. 95 deg. 34 min. 08 sec. W., in S/2 sec. 24, T. 1 N., R. 16 E., Falls City 7.5-min quadrangle, Richardson Co., NE (from USGS GNIS database and ACME Mapper 2.0, accessed December 4, 2010).]
Source: US geologic names lexicon (USGS Bull. 896, p. 1657); GNC KS-NE Pennsylvanian Corr. Chart, sheet 1, Oct. 1936; supplemental information from GNU records (USGS DDS-6; Denver GNULEX).
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 ([ ]).