Can microplate rotation drive subduction inversion?

L. E. Webb, Suzanne L Baldwin, T. A. Little, Paul G Fitzgerald

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

We propose a model for the exhumation of Late Miocene coesite-eclogite 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.

Original languageEnglish (US)
Pages (from-to)823-826
Number of pages4
JournalGeology
Volume36
Issue number10
DOIs
StatePublished - 2008

Fingerprint

microplate
exhumation
subduction
Australian plate
plate boundary
coesite
Pacific plate
eclogite
plate tectonics
reactivation
terrane
thrust
Miocene
inversion
rock

Keywords

  • Exhumation
  • Microplate rotation
  • Subduction inversion
  • Ultrahigh-pressure

ASJC Scopus subject areas

  • Geology

Cite this

Can microplate rotation drive subduction inversion? / Webb, L. E.; Baldwin, Suzanne L; Little, T. A.; Fitzgerald, Paul G.

In: Geology, Vol. 36, No. 10, 2008, p. 823-826.

Research output: Contribution to journalArticle

Webb, L. E. ; Baldwin, Suzanne L ; Little, T. A. ; Fitzgerald, Paul G. / Can microplate rotation drive subduction inversion?. In: Geology. 2008 ; Vol. 36, No. 10. pp. 823-826.
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