Geodynamic reconstructions of the Australides-2: Mesozoic-Cainozoic

Details

Serval ID
serval:BIB_E03E07C8DC32
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Geodynamic reconstructions of the Australides-2: Mesozoic-Cainozoic
Journal
Geosciences
Author(s)
Vérard C., Stampfli G.M.
ISSN
2076-3263
Publication state
Published
Issued date
2013
Peer-reviewed
Oui
Volume
3
Pages
331-353
Language
english
Abstract
The present work, derived from a full global geodynamic reconstruction model over 600 Ma and based on a large database, focuses herein on the interaction between the Pacific, Australian and Antarctic plates since 200 Ma, and proposes integrated solutions for a coherent, physically consistent scenario. The evolution of the Australia-Antarctica-West Pacific plate system is dependent on the Gondwana fit chosen for the reconstruction. Our fit, as defined for the latest Triassic, implies an original scenario for the evolution of the region, in particular for the "early" opening history of the Tasman Sea. The interaction with the Pacific, moreover, is characterised by many magmatic arc migrations and ocean openings, which are stopped by arc-arc collision, arc-spreading axis collision, or arc-oceanic plateau collision, and subduction reversals. Mid-Pacific oceanic plateaus created in the model are much wider than they are on present-day maps, and although they were subducted to a large extent, they were able to stop subduction. We also suggest that adduction processes (i.e., re-emergence of subducted material) may have played an important role, in particular along the plate limit now represented by the Alpine Fault in New Zealand.
Keywords
Australia, Antarctica, Tasmania, New Zealand, Lord Howe Rise, Tasman Sea, west Pacific, plate tectonics, geodynamic reconstructions
Publisher's website
Open Access
Yes
Create date
01/09/2014 10:21
Last modification date
20/08/2019 16:04
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