Unit Name: Utica Shale
Unit Type: Lithostratigraphic
Rank: Formation
Status: Formal
Usage: Currently in use
Age Interval: late Middle Ordovician (N.A.) (460.9 - 451 ma)
Province/Territory: Ontario; Quebec; Indiana; Michigan; New York; Ohio

Originator: Emmons, E., 1842.

Type Locality:
Type area: well exposed in the Starch Factory Creek to the east of Utica. Named from City of Utica, Oneida Co., NY (Ruedemann, 1912).

History:
Also referred to as Utica Group.

Remark:
GeoLex entry: http://ngmdb.usgs.gov/Geolex/NewUnits/unit_4218.html

Other Citations:
Emmons, E., 1842, Geol. NY, pt. 2, div. 4, geol. 2nd. dist., p. 116-118, 183, 278, 319, 397, 429; Globensky, Y., et.al., 1993, QMER DV 91-23, p. 279 [formally described].

References:
Emmons, E., 1842, Geology of New York; Part II, Survey of the second geological district: New York State Museum, 437p.

Source: GSC file of geological names; T.E. Bolton and J. Dougherty (compiler)
Contributor: A.A. Coyne; P.H. Davenport
Entry Reviewed: No
Name Set: Lithostratigraphic Lexicon
LastChange: 18 Feb 2009