- Usage in publication:
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- Ten Rod Granite Gneiss
- Modifications:
-
- Revised
- Overview
- Areal extent
- Dominant lithology:
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- Gneiss
- Granite
- AAPG geologic province:
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- New England province
Summary:
Sterling Plutonic Suite is here restricted to the Hope Valley terrane. (The Hope Valley together with the Esmond-Dedham terrane make up the Avalon superterrane of this report.) The Ponaganset Gneiss and the Ten Rod Granite Gneiss lie within the Esmond-Dedham terrane and are therefore removed from the Sterling. The Ten Rod is pinkish gray to medium gray, medium grained to fine-grained. Consists of a porphyritic and a nonporphyritic phase. Large crystals of pink to tan microcline are distinctive characteristic. Albite-oligoclase, quartz, and biotite also abundant in porphyritic rocks. Generally well-foliated; some lineation. Probable age of emplacement is 601+/-5 Ma (Hermes and Zartman, 1985).
Source: GNU records (USGS DDS-6; Reston GNULEX).
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 ( ).
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