Unit Name: Napanee Limestone
Unit Type: Lithostratigraphic
Rank: Formation
Status: Formal
Usage: Currently in use
Age Interval: Middle Ordovician (470 - 460.9 ma)
Province/Territory: Ontario; New York

Originator: Kay, G.M., 1937, GSA Bull. 48:2, p. 255-256.

Type Locality:
Type Locality: (See Canadian Lexicon) Type section: 1 mi north of Napanee Station, along Selby Creek in Lot 22, Conc. III, Richmond Twp., Lenox and Addington Co., Ontario, Canada (Kay, 1937).

Lithology:
"gray-blue, medium-textured, rather heavy-ledged limestone with shaly partings particularly common in the lower part" (Kay, 1937)

Remark:
This unit is a member of the Rockland formation. (Kay, 1937) This unit is a formation of the Trenton Group. GeoLex entry: http://ngmdb.usgs.gov/Geolex/NewUnits/unit_2935.html

Other Citations:
Kay, G.M., 1937, GSA Bull. 48:2, p. 255-256.

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: 24 Jul 2018