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The active changeover from the transpression to the transtensional tectonic regime in eastern Alborz, Northern Iran by Zaman Malekzade; Olivier Bellier is a Earth and Planetary Sciences article available to read on EtoBox.

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By fault kinematic approach, this article addresses the clockwise rotation of the South Caspian Basin (SCB) and northeastern Alborz because of Arabian plate collision with Eurasia. The collision is accommodated by the thrust and left-lateral strike-slip faults. One of the essential features of the eastern Alborz is that the active strike-slip faults change from transpressional in the east of Tazareh Syntax to the transtensional in the west of this tectonic node. Therefore, we introduce the Tazareh syntax as the location of this changeover where the two relatively rigid crusts of SCB and Central Iran pinch the Alborz out and make a narrow escape on the way of crustal transformation from east to the west. Indeed, the interaction between Central Iran and SCB acts as an indenter leading to the clockwise rotation of the eastern Alborz. Accordingly, the general transpressional regime in Alborz, Binalud, and Kopeh Dagh that dominated since > 5 Ma switched to the transtensional tectonic regime over the eastern Alborz in Quaternary while it has remained on the mode of transpression in western Alborz, Kopeh Dagh and Binalud. Therefore, the Tazareh transitional zone represents how a part of t

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Author

Zaman Malekzade; Olivier Bellier

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Earth and Planetary Sciences (Physical Sciences)