Ordovician paleomagnetism of eastern Yunnan, China

Journal Article · Fri Jun 01 00:00:00 EDT 1990 · Geophysical Research Letters (American Geophysical Union); (USA)

DOI:https://doi.org/10.1029/GL017i007p00953· OSTI ID:6206199

Fang, Wu; Van der Voo, R ^[1]; Liang, Qizhong ^[2]

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1. Univ. of Michigan, Ann Arbor (USA)
2. Yunnan Institute of Geological Sciences, Kunming (China)

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{degree}/+66{degree}, N = 5 sites, k = 21.4, {alpha}{sub 95} = 17{degree}) passes the fold test and is interpreted as primary (late Early Ordovician). The paleopole, at 39{degree}S, 236{degree}E, and the paleolatitude of 48{degree}S support an Ordovician position of South China adjacent to Gondwana.

• OSTI ID: 6206199
• Journal Information: Geophysical Research Letters (American Geophysical Union); (USA), Vol. 17:7; ISSN 0094-8276
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
CHINA
GEOLOGIC FORMATIONS
PALEOMAGNETISM
CARBONIFEROUS PERIOD
CONTINENTAL CRUST
GEOLOGY
ORDOVICIAN PERIOD
PLATE TECTONICS
TRIASSIC PERIOD
ASIA
EARTH CRUST
GEOLOGIC AGES
MAGNETISM
MESOZOIC ERA
PALEOZOIC ERA
TECTONICS
580000* - Geosciences