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Book Chapter

The drift history of Iran from the Ordovician to the Triassic

By
Giovanni Muttoni
Giovanni Muttoni
1
Dipartimento di Scienze della Terra
,
Università di Milano
,
via Mangiagalli 34, I-20133 Milano
,
Italy
, and
ALP – Alpine Laboratory of Paleomagnetism
,
via Madonna dei Boschi 76, I-12016 Peveragno (CN)
,
Italy
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Massimo Mattei
Massimo Mattei
2
Dipartimento di Scienze Geologiche
,
Università di Roma-Tre
,
Largo San Leonardo Murialdo 1, I-00146 Roma
,
Italy
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Marco Balini
Marco Balini
1
Dipartimento di Scienze della Terra
,
Università di Milano
,
via Mangiagalli 34, I-20133 Milano
,
Italy
, and
ALP – Alpine Laboratory of Paleomagnetism
,
via Madonna dei Boschi 76, I-12016 Peveragno (CN)
,
Italy
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Andrea Zanchi
Andrea Zanchi
3
Dipartimento Scienze Geologiche e Geotecnologie
,
Università di Milano-Bicocca
,
Piazza della Scienza 4, I-20126 Milano
,
Italy
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Maurizio Gaetani
Maurizio Gaetani
1
Dipartimento di Scienze della Terra
,
Università di Milano
,
via Mangiagalli 34, I-20133 Milano
,
Italy
, and
ALP – Alpine Laboratory of Paleomagnetism
,
via Madonna dei Boschi 76, I-12016 Peveragno (CN)
,
Italy
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Fabrizio Berra
Fabrizio Berra
1
Dipartimento di Scienze della Terra
,
Università di Milano
,
via Mangiagalli 34, I-20133 Milano
,
Italy
, and
ALP – Alpine Laboratory of Paleomagnetism
,
via Madonna dei Boschi 76, I-12016 Peveragno (CN)
,
Italy
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Published:
January 01, 2009

Abstract

New Late Ordovician and Triassic palaeomagnetic data from Iran are presented. These data, in conjunction with data from the literature, provide insights on the drift history of Iran as part of Cimmeria during the Ordovician–Triassic. A robust agreement of palaeomagnetic poles of Iran and West Gondwana is observed for the Late Ordovician–earliest Carboniferous, indicating that Iran was part of Gondwana during that time. Data for the Late Permian–early Early Triassic indicate that Iran resided on subequatorial palaeolatitudes, clearly disengaged from the parental Gondwanan margin in the southern hemisphere. Since the late Early Triassic, Iran has been located in the northern hemisphere close to the Eurasian margin. This northward drift brought Iran to cover much of the Palaeotethys in approximately 35 Ma, at an average plate speed of c. 7–8 cm year−1, and was in part coeval to the transformation of Pangaea from an Irvingian B to a Wegenerian A-type configuration.

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Contents

Geological Society, London, Special Publications

South Caspian to Central Iran Basins

M.-F. Brunet
M.-F. Brunet
CNRS-INSU and Université Pierre et Marie Curie, France
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M. Wilmsen
M. Wilmsen
Senckenberg Naturhistorische Sammlungen Dresden, Museum für Mineralogie und Geologie, Germany
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J. W. Granath
J. W. Granath
Granath & Associates Consulting Geology, USA
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Geological Society of London
Volume
312
ISBN electronic:
9781862395602
Publication date:
January 01, 2009

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