USGS Visual Identifier
National Geologic Map Database logo GEOLEX database


Geologic Unit: Richland

Usage:
Richland Formation of Conococheague Group (PA*)
Richland Member of Conococheague Formation (PA)

Age:
Cambrian, Late*
Geologic Province:
Appalachian basin*
Areal Extent:
PA*

Type Locality:
Along Reading RR, about 0.25 mile east of Richland and along road immediately west of Sheridan, Lebanon Co., PA (Gray and others, 1958).

Unit Name History:
Named (Gray and others, 1958).
Revised to Richland Formation (Gray and others, 1960).
Overview (Meisler and Becher, 1968).
Overview (Berg and others, 1980).

Note: If you need more information, please contact Nancy Stamm (nstamm@usgs.gov).
Asterisks (*) indicate usage by the U.S. Geological Survey. Other usages by state geological surveys.

"No current usage" implies that a name has been abandoned or that it has fallen into disuse. Former usage and, if known, replacement name given in parentheses ().

Slashes (/) indicate unit name usage violates the 1983 North American Stratigraphic Code. This violation may be explained within brackets ([ ]).






U.S. Department of the Interior, U.S. Geological Survey, Reston, VA, USA
URL http://ngmdb.usgs.gov/ngmdb/ngm_catalog.ora.html
Database project personnel
Last modified: 15-Jan-2013