| Abstract: | Undeformed Early Permian Westerly Granite dikes cut gneisses of the southeastern New England Avalon zone along coastal southeastern Connecticut and adjacent Rhode Island. Most dikes dip southward at a low angle. The Westerly dikes were emplaced in relatively warm rock penecontemporaneously with the Narragansett Pier Granite during a narrow time interval shortly after cessation of pervasive Alleghanian ductile deformation but probably before final localized movement on major shear zones. The gentle dips indicate subhorizontal release at the end stage of the Alleghanian compressive event. Doming, intrusion of granite, and subsequent rapid uplift and cooling are attributed to the underplating of Avalonian crust by an African plate during the Alleghanian. -Author |
| Genre: | Article |
| ProdID: | 70014464 |
| Citation Author: | Goldsmith, R. |
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| Citation End Page: | 201 |
| Citation Issue: | 3 |
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| Citation Language: | English |
| Citation Larger Work Title: | Northeastern Geology |
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| Citation Number Of Pages: | 7 |
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| Citation Search Results Text: | Tectonic significance of dikes of Westerly Granite, southeastern Connecticut and southwestern Rhode Island; 1988; Article; Journal; Northeastern Geology; Goldsmith, R. |
| Citation Start Page: | 195 |
| Citation Volume: | 10 |
| Citation Year: | 1988 |
| Type: | citation/reference |
| Text: | Tectonic significance of dikes of Westerly Granite, southeastern Connecticut and southwestern Rhode Island; 1988; Article; Journal; Northeastern Geology; Goldsmith, R. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Fri, 1 Jan 1988 00:00 -0600 |
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