U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database

Geologic Unit: Iberville

Usage:

Iberville Formation (NY*,VT*)
Iberville Shale (NY)
Iberville Shale of Trenton Group (NY)


Geologic age:

Late Ordovician (Trenton to Maysvillian)*


Type section, locality, area and/or origin of name: (See Canadian Lexicon)

Type area: Iberville Co., southern Quebec, Canada (Hawley, 1957).


AAPG geologic province:

New England province*


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates published by U.S. Geological Survey authors.

"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).

Slash (/) indicates name does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).