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dc.contributor.authorShaanan, U.
dc.contributor.authorRosenbaum, G.
dc.contributor.authorPisarevskiy, Sergei
dc.contributor.authorSperanza, F.
dc.date.accessioned2018-02-06T06:16:19Z
dc.date.available2018-02-06T06:16:19Z
dc.date.created2018-02-06T05:49:54Z
dc.date.issued2015
dc.identifier.citationShaanan, U. and Rosenbaum, G. and Pisarevskiy, S. and Speranza, F. 2015. Paleomagnetic data from the New England Orogen (eastern Australia) and implications for oroclinal bending. Tectonophysics. 664: pp. 182-190.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/63253
dc.identifier.doi10.1016/j.tecto.2015.09.018
dc.description.abstract

© 2015 Elsevier B.V..Orogenic curvatures (oroclines) are common in modern and ancient orogens, but the geodynamic driving forces of many oroclines remain controversial. Here we focus on the New England oroclines of eastern Australia, the formation of which had been previously broadly constrained to the Early-Middle Permian. This time interval encompasses periods of both back-arc extension (at ~ 300-280 Ma) and subsequent contractional deformation (Hunter-Bowen Orogeny) that commenced at ~ 270 Ma along the paleo-Pacific and Gondwanan subduction plate boundary. We present new paleomagnetic data from volcanic rocks that were extruded during the transition from extension to contraction (at ~ 272 Ma), and we show that the oroclinal structure must have formed prior to the emplacement of the volcanic rocks. Our results thus indicate that oroclinal bending in the southernmost New England Orogen has been completed prior to the onset of Middle Permian contractional deformation. It is therefore concluded that the oroclines have likely formed during back-arc extension, and that a major contribution to the orogenic curvature was driven by trench retreat.

dc.publisherElsevier BV
dc.titlePaleomagnetic data from the New England Orogen (eastern Australia) and implications for oroclinal bending
dc.typeJournal Article
dcterms.source.volume664
dcterms.source.startPage182
dcterms.source.endPage190
dcterms.source.issn0040-1951
dcterms.source.titleTectonophysics
curtin.departmentDepartment of Applied Geology
curtin.accessStatusFulltext not available


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