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Paleomagnetic results from northern Maine ‐ Reinterpretations
Author(s) -
Brown Laurie L.,
Kelly William M.
Publication year - 1980
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl007i012p01109
Subject(s) - devonian , petrography , geology , paleomagnetism , tectonics , maghemite , rock magnetism , volcanic rock , paleontology , geochemistry , structural geology , volcano , magnetite , physics , magnetization , magnetic field , quantum mechanics , remanence
Recalculated tectonic corrections on early Devonian Dockendorff Group volcanics from northern Maine do not pass a fold test. Reflected light petrographic examination of samples from all sites reveals extensive low temperature alteration of oxides, with abundant secondary sphene and maghemite. It appears that the preserved magnetism in these rocks is post Acadian folding. The new pole position for this location is 23.5°N and 86.7°E (38 samples from 4 sites, alpha‐95=7.2°). The recalculated pole position is different from published poles for both stable North American and for the proposed Avalon micro‐continent.