U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS

National Geologic Map Database

NGMDB

Geologic Unit: Tatnic Hill

Usage:

Tatnic Hill Formation of Putnam Group (CT*,MA*)


Subunits:

(alphabetical): Bates Pond Lentil (CT*), Fly Pond Member (CT*,MA*), Yantic Member (CT*,MA*).


Geologic age:

Precambrian*
Proterozoic, Late*
Ordovician*
Ordovician, Late*
Ordovician, Middle*


Type section, locality, area and/or origin of name:

Type area: consists of series of outcrops extending from Connecticut Route 169, on east side of Tatnic Hill, west for 2.5 mi to Stetson Road, in southeast corner of Hampton quadrangle, east-central CT. Named from exposures in area of Tatnic Hill in southern part of Danielson quadrangle, where section is more complete and contacts better exposed than elsewhere (Dixon, 1964).


AAPG geologic province:

New England province*


NGMDB

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

Asterisk (*) indicates usage by the U.S. Geological Survey. Other usages by state geological surveys.

"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 ([ ]).

Find Us:

twitter

Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
Supported by the National Cooperative Geologic Mapping Program
URL: http://ngmdb.usgs.gov
Page Contact Information: Personnel
Page Last Modified: Tue Jun 3 16:31:39 2014