Paleomagnetism of Selected Devonian Age Plutons from Maine, Vermont and New York ...
In order to better define the Devonian paleolatitude and cratonic pole position of North America, eight Devonian plutons were studied: the Black Mountain Granite (and associated rocks) from southern Vermont, the Hartland, Lexington, Center Pond, Chain of Ponds, Pleasant Lake, and Horserace units fro...
| Main Authors: | , |
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| Format: | Article in Journal/Newspaper |
| Language: | unknown |
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Columbia University
1989
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.7916/d85t3hp5 https://academiccommons.columbia.edu/doi/10.7916/D85T3HP5 |
| Summary: | In order to better define the Devonian paleolatitude and cratonic pole position of North America, eight Devonian plutons were studied: the Black Mountain Granite (and associated rocks) from southern Vermont, the Hartland, Lexington, Center Pond, Chain of Ponds, Pleasant Lake, and Horserace units from Maine, and the Peekskill Granite located in southeastern New York. Of the eight units, the best results come from the Peekskill Granite of New York (age ~360Ma) and the Pleasant Lake Granite of Maine (age ~400Ma) . The Peekskill yields a pole position of 117°E, 23°N, a 95 = 16° . This pole is identical to the pole from the earliest Carboniferous Deer Lake Formation from western Newfoundland, suggesting that the Peekskill Pluton has not suffered post emplacement rotation. However, the pole position is insufficiently precise to distinguish between rotation of one or both limbs of the Pennsylvania salient with respect to the craton in the Alleghanian orogeny or to evaluate the hypothesis that some portion of ... |
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