Paleomagnetism of Southeast and East Asia

  1. M.W. McEIhinny and
  2. D.A. Valencio
  1. Neville S. Haile

Published Online: 15 MAR 2013

DOI: 10.1029/GD002p0129

Paleoreconstruction of the Continents

Paleoreconstruction of the Continents

How to Cite

Haile, N. S. (1981) Paleomagnetism of Southeast and East Asia, in Paleoreconstruction of the Continents (eds M.W. McEIhinny and D.A. Valencio), American Geophysical Union, Washington, D. C.. doi: 10.1029/GD002p0129

Author Information

  1. 5 First Turn, Upper Wolvercote, Oxford OX2 8AG, England

Publication History

  1. Published Online: 15 MAR 2013
  2. Published Print: 1 JAN 1981

Book Series:

  1. Geodynamics Series

ISBN Information

Print ISBN: 9780875905112

Online ISBN: 9781118670217

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Keywords:

  • Paleomagnetic data;
  • Paleomagnetism;
  • Polar projection;
  • Rotation;
  • Sedimentary rocks;
  • Southeast and East Asia

Summary

The decade 1970–1979 saw the first paleomagnetic work in Southeast Asia, providing useful constraint on paleomagnetic reconstructions. In that part of the region the oldest result, from the Ordovician of Malaysia, indicates a paleolatitude of 43°. Later Paleozoic and Mesozoic results from Southeast Asia all indicate paleolatitudes within 26° of the equator, indicating that movement north or south of present positions was not great, at least for the sampled elements. Considerable rotations have been demonstrated, however, for Thailand, Malay Peninsula, Borneo, Sumatra, Sulawesi, Sumba, Sumbawa, and Seram, and the results enable a start to be made in defining boundaries of ‘microplates' or major structural blocks in the region.

Southeast and East Asia have an extremely complex tectonic history, and are a region of the world with very sparse paleomagnetic data available. The results so far, although scattered, are sufficient to demonstrate the potential of the method for elucidating the tectonic and paleogeographic history of the region.