- Usage in publication:
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- Pleasant Hill limestone*
- Modifications:
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- Named
- Dominant lithology:
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- Limestone
- AAPG geologic province:
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- Appalachian basin
Summary:
Named for Pleasant Hill church, 1 mile northwest of Henrietta, in southeast corner of Blair Co., PA. Consists of an upper thick-bedded limestone and a lower argillaceous thin-bedded limestone that weathers to shale. 600 feet thick. Overlies Waynesboro formation; underlies Warrior limestone. Age is Late Cambrian.
Source: GNU records (USGS DDS-6; Reston GNULEX).
- Usage in publication:
-
- Pleasant Hill limestone*
- Modifications:
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- Age modified
- AAPG geologic province:
-
- Appalachian basin
Summary:
Age changed to Middle Cambrian based on fossils.
Source: GNU records (USGS DDS-6; Reston GNULEX).
- Usage in publication:
-
- Pleasant Hill formation
- Modifications:
-
- Revised
- AAPG geologic province:
-
- Appalachian basin
Summary:
Revised the Pleasant Hill to the Pleasant Hill formation on the state geologic map of PA.
Source: GNU records (USGS DDS-6; Reston GNULEX).
- Usage in publication:
-
- Pleasant Hill Formation
- Modifications:
-
- Overview
- AAPG geologic province:
-
- Appalachian basin
Summary:
The Pleasant Hill Formation in central PA consists of gray, thin-bedded, argillaceous limestone interbedded with shale, siltstone, and sandstone. Overlies Waynesboro Formation and underlies Warrior Formation.
Source: GNU records (USGS DDS-6; Reston 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 ([ ]).