Paleomagnetic evidence for clockwise rotation of the northern arm of Sulawesi, Indonesia

Details Paleomagnetic evidence for clockwise rotation of the northern arm of Sulawesi, Indonesia Paleomagnetic evidence for clockwise rotation of the northern arm of Sulawesi, Indonesia

Jul 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981e%26psl..54..272o&link_type=abstract

Earth and Planetary Science Letters, Volume 54, Issue 2, p. 272-280.

Physics

12

Scientific paper

Paleomagnetic results from the northern arm of Sulawesi show that the arm has been subjected to a clockwise rotation of more than 90° and that its rotational motion began no later than the middle Miocene. The mean direction showing a normal polarity at the Eocene to the early Miocene is D = 98.0° and I = 6.9°. A declination value of D = 50.1° obtained from Miocene rocks indicates a transition stage of the rotational motion. The datum from Plio-Pleistocene volcanics is D = -4.6° and I = -9.3°. This suggests that the rotational motion terminated before the initiation of volcanic activity during the Plio-Pleistocene.

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