Journal
JOURNAL OF GEODYNAMICS
Volume 56-57, Issue -, Pages 7-17Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jog.2011.06.006
Keywords
India; Himalaya; Collision; Orogen; Reconstruction; Tectonics; Tethys
Categories
Funding
- Research School of Earth Sciences
- Australian Government
- Australian Research Council [DP0877274]
- Australian Research Council [DP0877274] Funding Source: Australian Research Council
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We review the relative motion of India and Asia for the last 100 million years and present a revised reconstruction for the India-Antarctica-Africa-North America-Eurasia plate circuit based on published motion histories. Deformation of these continental masses during this time introduces uncertainties, as does error in oceanic isochron age and location. Neglecting these factors, the data ipso facto allow the inference that the motion of India relative to Eurasia was distinctly episodic. Although motion is likely to have varied more smoothly than these results would allow, the geological record also suggests a sequence of distinct episodes, at about the same times. Hence we suggest that no single event should be regarded as the collision of India with Asia. The deceleration of the Indian plate commencing at similar to 65 Ma is matched by an equally significant prior acceleration and this aspect must be taken into account in geodynamic scenarios proposed to explain the collision of India with Asia. (c) 2011 Elsevier Ltd. All rights reserved.
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