Can microplate rotation drive subduction inversion?

被引：63

作者：

Webb, L. E. ^{[1
]}

Baldwin, S. L. ^{[1
]}

Little, T. A. ^{[2
]}

Fitzgerald, P. G. ^{[1
]}

机构：

[1] Syracuse Univ, Syracuse, NY 13244 USA

[2] Victoria Univ Wellington, Wellington 6140, New Zealand

来源：

GEOLOGY | 2008年 / 36卷 / 10期

基金：

美国国家科学基金会;

关键词：

ultrahigh-pressure; exhumation; microplate rotation; subduction inversion;

D O I：

10.1130/G25134A.1

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

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-UIW) 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-URP terranes worldwide.

引用

页码：823 / 826

页数：4

共 41 条

[1]

Abers GA, 2001, GEOL SOC SPEC PUBL, V187, P305, DOI 10.1144/GSL.SP.2001.187.01.15

[2] Shallow dips of normal faults during rapid extension: Earthquakes in the Woodlark-D'Entrecasteaux rift system, Papua New Guinea [J].