DOI: 10.1016/j.tecto.2021.228886
论文题名: New tectonic configuration in NW Iran: Intracontinental dextral shear between NW Iran and SE Anatolia
作者: Niassarifard M. ; Shabanian E. ; Solaymani Azad S. ; Madanipour S.
刊名: Tectonophysics
ISSN: 00401951
出版年: 2021
卷: 811 语种: 英语
中文关键词: Block translation
; Main Recent Fault
; NW Iran
; Oblique convergence
; SE Anatolia
; Stress state
英文关键词: Kinematics
; Magnetorheological fluids
; Strike-slip faults
; Fault-slip analysis
; Frontal collision
; Localized extensions
; Normal fault zones
; Pure shear deformations
; Strike-slip fault systems
; Structural fields
; Structural pattern
; Fault slips
; continental margin
; convergence
; fault zone
; oblique fault
; shear zone
; stress-strain relationship
; strike-slip fault
; tectonic evolution
; Anatolia
; Iran
; Turkey
英文摘要: The Main Recent Fault (MRF) is a major active strike-slip fault system at the NE border of the Arabian platform and Central Iran. Both geometry and kinematics of the fault system is rather well known along its central part and at its SE termination, while its possible continuation to the northwest is ambiguous. Moreover, less regard has been paid to possible relationships between this major intracontinental fault system and other strike-slip faults in NW Iran – SE Anatolia. This paper investigates both the structural pattern and kinematics of deformation in the region to the north of latitude 37°N, between the North Tabriz Fault and the MRF. We followed this goal through detailed fault mapping, structural field measurements, and fault-slip analyses, complemented by the reconstruction of cumulative geomorphic offsets along the main fault segments. The collected data sets have led us to propose a new tectonic model for the northwest corner of the Arabia – Central Iran collision zone. Our results reveal that the intracontinental dextral shear between Arabia-Central Iran, which is mainly localized along the MRF, continues to the north of latitude 37°N along a branch of the Neotethyan suture penetrating into SE Anatolia. The dextral fault system abruptly dies out at latitude 37.5° N joining two NNW-striking normal fault zones, which accommodate the dextral translation of Central Iran relative to Arabia through ESE-trending extension. The region in NW Iran and SE Anatolia is affected by a heterogeneous active stress field due to different tectonic processes such as tectonic escape, block translation, and localized extension. The dynamics of these processes is either directly governed by the Arabia – Eurasia oblique convergence or indirectly controlled by frontal collision and pure shear deformation in central Anatolia. © 2021 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170876
Appears in Collections: 气候变化与战略
There are no files associated with this item.
作者单位: Department of Geology, Tarbiat Modares University, Tehran, Iran; Department of Earth Sciences, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan, 45137-66731, Iran; Seismotectonics and Seismology Department, Geological Survey of Iran, P.O. Box: 13185 1494, Tehran, Iran
Recommended Citation:
Niassarifard M.,Shabanian E.,Solaymani Azad S.,et al. New tectonic configuration in NW Iran: Intracontinental dextral shear between NW Iran and SE Anatolia[J]. Tectonophysics,2021-01-01,811