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Journal: RESEARCH JOURNAL OF UNIVERSITY OF ISFAHAN "SCIENCE" | Year:1387 | Volume:34 | Issue:5 (GEOLOGY) | Start Page:261 | End Page:276

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Title

THE ZARIN SHEAR ZONE AND IT'S TECTONIC IMPORTANCE IN CENTRAL IRANIAN MICRO-CONTINENT

Pages

 Start Page 261 | End Page 276

Abstract

 Zarin ductile SHEAR ZONE in north Ardakan with N-S orientation and arc geometry concaving to the west contains parts of Zann granite and Paleozoic metamorphic rocks that were deformed to mylonites and ultramylonites.This SHEAR ZONE is the same as the grater dextral strike-slip ductile SHEAR ZONE to the east (Kashmar-Kerman SHEAR ZONE), that is the tectonic boundary of Yazd block to the west and Tabas block to the east in the central micro-plate of Iran. The major boundary faults of the tectonic blocks in the central micro-plate of Iran change their N-S trend (Nayband fault) to arc shape to the west (Kashmar-Kerman SHEAR ZONE) and the arc form is continued to the west in Zarin SHEAR ZONE. All these fault systems are strike-slip with dextral sense of shear.Fabric evidences in Zarin SHEAR ZONE indicate that possibly it was originally in NS direction and gradually was changed to arc form.

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