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National Geologic Map Database

Geologic Unit: Blackstone

Usage:

Blackstone Group (MA*,RI*)


Subunits:

Hunting Hill Greenstone (RI*,MA*), Mussey Brook Schist (RI*,MA*), Sneech Pond Schist (RI*,MA*), and Quinnville Quartzite (RI*,MA*)


Geologic age:

Late Proterozoic*


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

Named from typical development in lower course of Blackstone River between Woonsocket and Pawtucket, Providence Co., eastern RI (Woodworth, 1899).


AAPG geologic province:

New England province*


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 ([ ]).