Unit Name: Cobourg Formation
Unit Type: Lithostratigraphic
Rank: Formation
Status: Formal
Usage: Currently in use
Age Interval: Middle Ordovician (N.A.) (473 - 451 ma)
Province/Territory: Ontario; New York

Originator: Raymond, P.E., 1921, GSC Mus. Bull. 31, p. 1.

Type Locality:
Type Locality: (See Canadian Lexicon) Cobourg, Northumberland Co., Ontario, Canada (Raymond, 1921).

Remark:
This unit is a formation of the Trenton Group. GeoLex entry: http://ngmdb.usgs.gov/Geolex/NewUnits/unit_1134.html

Other Citations:
Raymond, P.E., 1921, GSC Mus. Bull. 31, p. 1.

Source: GSC file of geological names; T.E. Bolton and J. Dougherty (compiler)
Contributor: A.A. Coyne
Entry Reviewed: No
Name Set: Lithostratigraphic Lexicon
LastChange: 30 Jan 2013