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Can microplate rotation drive subduction inversion?

Authors :
Webb, L. E.
Baldwin, S. L.
Little, T. A.
Fitzgerald, P. G.
Source :
Geology. Oct2008, Vol. 36 Issue 10, p823-826. 4p. 2 Diagrams, 1 Map.
Publication Year :
2008

Abstract

We propose a model for the exhumation of Late Miocene coesiteeclogite in the Woodlark Rift of Papua New Guinea. Reorganization within the obliquely convergent Australian-Pacific plate boundary zone led to formation of the Woodlark microplate. Counterclockwise rotation of the microplate relative to the Australian plate resulted in extensional reactivation of a subduction thrust (subduction inversion) and the exhumation of high- and ultrahigh-pressure (HP-UHP) rocks within the Australian-Woodlark plate boundary zone. The model invokes plate tectonic processes to drive rapid exhumation and predicts spatial and temporal patterns of exhumation to assess its applicability to HP-UHP terranes worldwide. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00917613
Volume :
36
Issue :
10
Database :
Academic Search Index
Journal :
Geology
Publication Type :
Academic Journal
Accession number :
34511766
Full Text :
https://doi.org/10.1130/G25134A.1