New structural and K-Ar data for the metamorphic rocks in Neyriz area (Sanandaj-Sirjan Zone, Southern Iran). Their interest for an overview of the Neo-Tethyan domain in the Middle East

The metamorphic rocks of the Neyriz area (Sanandaj-Sirjan zone) represent a Palaeozoic sequence, the upper part of which being palaeontologically dated from the Carboniferous and the Permian. Field structural analysis of the whole sequence, detailed in laboratory by microstructural one and 40K-40Ar...

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Published inComptes rendus. Geoscience Vol. 335; no. 13; pp. 981 - 991
Main Authors Sheikholeslami, Reza, Bellon, Herve, Emami, Hachem, Sabzehei, Mossaieb, Pique, Alain
Format Journal Article
LanguageEnglish
French
Published 01.11.2003
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Summary:The metamorphic rocks of the Neyriz area (Sanandaj-Sirjan zone) represent a Palaeozoic sequence, the upper part of which being palaeontologically dated from the Carboniferous and the Permian. Field structural analysis of the whole sequence, detailed in laboratory by microstructural one and 40K-40Ar dating carried on separated minerals, lead to establish that the whole sequence, from gneisses to Permian rocks, has suffered a unique synmetamorphic deformation, of variable intensity, marked by a foliation. Isotopic ages measured on extracted amphiboles and micas, clustered in four groups between 300 and 60 Ma, show the successive stages of their slow exhumation, which ended by the end of the Cretaceous.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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ObjectType-Feature-1
ISSN:1631-0713
1778-7025
DOI:10.1016/j.crte.2003.09.001