Mathematics – Logic
Scientific paper
Sep 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977e%26psl..36..269b&link_type=abstract
Earth and Planetary Science Letters, Volume 36, Issue 2, p. 269-279.
Mathematics
Logic
4
Scientific paper
In the Nordre Strømfjord shear zone of central West Greenland it is believed that the gneisses exposed at the coast reached a maximum depth of burial about 10 km deeper than those now adjacent to the inland ice. This theory was tested palaeomagnetically. Further sampling up the mountain Kællingehætten was carried out to ascertain changes of direction of magnetization with height. The magnetic susceptibility ellipsoids were determined for each specimen and were used to correct their directions of magnetization for the effects of anisotropy. Complicated but compact polar wander paths were derived for both the fjord and mountain traverses. The path for the fjord is consistent with the geological model but does not support it. This inconclusive result may be the consequence of a low rate of polar wander. The mean palaeomagnetic poles are 27.7°N, 276.6° E (dp = 13.8°, dm = 17.3°) for Nordre Strømfjord and 25.3°N, 300.4°E (dp = 11.5°, dm = 14.1°) for Kællingehætten.
Beckmann George E. J.
Olesen Niels Ø.
Sørensen Kai
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