Titre
Geodynamic reconstructions of the Australides-2: Mesozoic-Cainozoic
Type
article
Institution
UNIL/CHUV/Unisanté + institutions partenaires
Périodique
Auteur(s)
Vérard, C.
Auteure/Auteur
Stampfli, G.M.
Auteure/Auteur
Liens vers les personnes
Liens vers les unités
ISSN
2076-3263
Statut éditorial
Publié
Date de publication
2013
Volume
3
Première page
331
Dernière page/numéro d’article
353
Peer-reviewed
Oui
Langue
anglais
Résumé
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.
PID Serval
serval:BIB_E03E07C8DC32
URL éditeur
Open Access
Oui
Date de création
2014-09-01T09:21:55.494Z
Date de création dans IRIS
2025-05-21T05:26:49Z