USGS Visual Identifier
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Geologic Unit: Queenston

Usage:
Queenston Shale (NY*,PA*,OH*,MI*)

Age:
Ordovician, Late*
Richmondian*


Geologic Province:
Michigan basin*
Cincinnati arch*
Appalachian basin*

Areal Extent:
MI*
NY*
OH*
PA*

Type Locality: (See Canadian Lexicon)
Type area: town of Queenston in Ontario, Canada, across Niagara River from Lewiston, NY, where beds are partly exposed (Grabau, 1908).

Unit Name History:
Named (Grabau, 1908).
Overview (Ryder, 1992).

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