- Usage in publication:
-
- Joshua schist
- Modifications:
-
- Named
- Dominant lithology:
-
- Schist
- Phyllite
- AAPG geologic province:
-
- Piedmont-Blue Ridge province
Summary:
Joshua schist named as part of Evington group (new). Probably named for Joshua Creek, 6.5 mi east of Lynchburg, Lynchburg quad, Campbell Co., south-central VA. Consists of blue-gray phyllite and fine-grained schists. Biotite porphyroblasts common. Calcareous in part. Thickness from a fraction of a foot to 500 ft. Overlies Candler formation (new), underlies Arch marble (new), both of Evington group. Age is Paleozoic(?).
Source: GNU records (USGS DDS-6; Reston GNULEX).
- Usage in publication:
-
- Joshua schist
- Modifications:
-
- Not used
- AAPG geologic province:
-
- Piedmont-Blue Ridge province
Summary:
Joshua schist not used. Rocks are included in Archer Creek formation (new).
Source: GNU records (USGS DDS-6; Reston GNULEX).
- Usage in publication:
-
- Joshua schist
- Modifications:
-
- Age modified
- AAPG geologic province:
-
- Piedmont-Blue Ridge province
Summary:
Age shown in columnar section is early Paleozoic(?).
Source: GNU records (USGS DDS-6; Reston GNULEX).
- Usage in publication:
-
- Joshua schist
- Modifications:
-
- Overview
- AAPG geologic province:
-
- Piedmont-Blue Ridge province
Summary:
Joshua schist included in Evington group (mapped undivided). Age is Paleozoic.
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 ([ ]).