- Usage in publication:
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- Moody Ledge Granite*
- Modifications:
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- Overview
- Revised
- Geochronologic dating
- Age modified
- AAPG geologic province:
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- New England province
Summary:
Used as Moody Ledge Granite and reassigned to Oliverian Plutonic Suite. On 1:250,000-scale geologic map, included in Early Silurian unit of medium-grained, weakly foliated granite within Oliverian Plutonic Suite. Separately mapped on 1:500,000-scale derivative map showing plutons and sample localities for isotopic dating. Isotopic ages of Moody Ledge Granite displaced by Mount Clough pluton are 1) 435 +/-3 Ma [Early Silurian per time scale of Palmer, 1983] by U/Pb methods as reported by Aleinikoff and Moench (1987, Geological Society of America, Abstracts with Programs, v. 19, p. 1); and 2) 455 +/-? by U/Pb methods (J.N. Aleinikoff, oral commun. 1994). Report includes geologic map and cross sections, correlation chart, and four 1:500,000-scale derivative maps.
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 ( ).
Slash (/) indicates name conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).