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The break-up of East Gondwana along the northeast coast of Oman: evidence from the Batain basin

Published online by Cambridge University Press:  26 July 2002

MARC HAUSER
Affiliation:
Institute of Mineralogy & Petrography and Institute of Geology, University of Berne, Baltzerstrasse 1, 3012 Bern, Switzerland
ROSSANA MARTINI
Affiliation:
Département de Géologie et Paléontologie, Université de Genève, 13 rue des Maraîchers, 1211 Genève 4 Switzerland
ALBERT MATTER
Affiliation:
Institute of Mineralogy & Petrography and Institute of Geology, University of Berne, Baltzerstrasse 1, 3012 Bern, Switzerland
LEOPOLD KRYSTYN
Affiliation:
Institut für Paläontologie der Universität Wien, Althanstrasse 14, 1090 Wien, Austria
TJERK PETERS
Affiliation:
Institute of Mineralogy & Petrography and Institute of Geology, University of Berne, Baltzerstrasse 1, 3012 Bern, Switzerland
GÉRARD STAMPFLI
Affiliation:
Institut de Géologie et Paléontologie, Université de Lausanne, BFSH 2, Switzerland
LOUISETTE ZANINETTI
Affiliation:
Département de Géologie et Paléontologie, Université de Genève, 13 rue des Maraîchers, 1211 Genève 4 Switzerland

Abstract

Recent detailed studies on the Batain nappes (northeast coast of Oman), which represent a special part of the so-called ‘Oman Exotics’, have led to a better understanding of the Neotethyan geo-dynamic evolution. The Batain Exotics bear witness to volcanic activity, sea-level changes, tectonic instability, rifting and oceanization along the Eastern Oman margin during Late Palaeozoic and Mesozoic times. They allow definition of the Batain basin as an aborted Permian branch of Neotethys. This marine basin was created in Early Permian times extending southward to the East African/ Madagascar region and was linked to the Karoo rift system. The presented revised classification of the Batain nappes considers the Batain basin to be no longer a part of the Hawasina basin and the Neotethyan margin proper. We attribute the Batain basin to a Mozambique–Somali–Masirah rift system (Somoma). This system started in Early Permian, times, creating a marine basin between Arabia and India/Madagascar; rifting in the Late Triassic and oceanization during Late Jurassic times led to the separation of East Gondwana.

Type
Research Article
Copyright
© 2002 Cambridge University Press

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