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Ordovician paleomagnetism of eastern Yunnan, China
Author(s) -
Fang Wu,
Van der Voo Rob,
Liang Qizhong
Publication year - 1990
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/gl017i007p00953
Subject(s) - ordovician , geology , paleomagnetism , gondwana , paleontology , carboniferous , paleozoic , apparent polar wander , red beds , declination , china , block (permutation group theory) , polar wander , clockwise , fold (higher order function) , tectonics , archaeology , geography , cretaceous , mechanical engineering , physics , geometry , mathematics , structural basin , astronomy , engineering
Three magnetic components have been isolated in Ordovician formations of the Yangtze Paraplatform (South China Block). Two of these (Daqing A and Hongshiya B components) yield paleopoles that conform to the Carboniferous to Triassic segment of the apparent polar wander path for South China, and are therefore interpreted as remagnetizations. The third component (declination/inclination = 301°/+66°, N = 5 sites, k = 21.4, α 95 = 17°) passes the fold test and is interpreted as primary (late Early Ordovician). The paleopole, at 39°S, 236°E, and the paleolatitude of 48°S support an Ordovician position of South China adjacent to Gondwana.