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

Originator: Raymond, P.E., 1914, GSC Summ. Rept. 1912, p. 348.

Type Locality:
Type Locality: (See Canadian Lexicon) Rockland, Ontario, 30 mi east of Ottawa, Canada (Kay, 1933). [From US geologic names lexicons, USGS Bull. 896, 1200]

Remark:
This unit is a formation in the Trenton Group. GeoLex entry: http://ngmdb.usgs.gov/Geolex/NewUnits/unit_14309.html

Other Citations:
Raymond, P.E., 1914, GSC Summ. Rept. 1912, p. 348 [formation]; Globensky, Y., et.al., 1993, QMER DV 91-23, p. 220 [formally described].

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