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GEOREF RECORD

Formation of intracontinental basins in the opposite corners of the Tabas Block as coeval structures controlled by transpressional faulting, Iran

Andrzej Konon, Alireza Nadimi, Marek Koprianiuk, Anna Wysocka, Rafal Szaniawski, Michal Wygladala, Ewa Slaby, Soheyla Beygi and Marcin Barski
Formation of intracontinental basins in the opposite corners of the Tabas Block as coeval structures controlled by transpressional faulting, Iran
Geological Society of America Bulletin (May 2016) 128 (11-12): 1593-1617

Abstract

The interaction of strike-slip faults in their restraining junctions allowed for the coeval formation of the Tabas and Abdoughi Basins and led to their inversion during the late Cenozoic. The intracontinental basins filled with Neogene and Quaternary deposits were controlled by large-scale dextral transpression along major faults that bounded the Tabas block, which is a part of the Central Iranian block. The anastomosing strike-slip fault pattern facilitated the development of both basins in opposite corners of the Tabas block. The subsided areas were formed as a result of interaction between the restraining junctions of strike-slip faults and thrusts. Flexural loading caused by the uplifted series of thrust sheets resulted in the depression of the opposite fault slabs, which permitted deposition of Neogene sediments. Deformation according to the "bookshelf" mechanism can be considered as a consequence of accommodation of the shortening of the area north of the Main Zagros thrust and externally imposed shearing along the Great Kavir (Doruneh) fault during the collision of the Arabian and Eurasian plates. Related processes of transpression and counterclockwise rotation of the tectonic blocks included in the Central Iranian block favored the interaction of strike-slip faults. The change of far-field stress and continuous transpression caused inversion of the basins and formation of Neogene folds in the northern and southern corners of the Tabas block. The geomorphic features observed along these strike-slip faults and on the thrust surfaces bounding the folds display their recent activity, consistent with present-day seismicity and geodetic measurements within the Central Iranian block.


ISSN: 0016-7606
EISSN: 1943-2674
Coden: BUGMAF
Serial Title: Geological Society of America Bulletin
Serial Volume: 128
Serial Issue: 11-12
Title: Formation of intracontinental basins in the opposite corners of the Tabas Block as coeval structures controlled by transpressional faulting, Iran
Affiliation: University of Warsaw, Faculty of Geology, Warsaw, Poland
Pages: 1593-1617
Published: 20160511
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 130
Accession Number: 2016-076769
Categories: Structural geologyStratigraphy
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. geol. sketch maps
N32°15'00" - N34°15'00", E56°00'00" - E57°30'00"
Secondary Affiliation: University of Isfahan, IRN, IranPolish Oil and Gas Company, POL, PolandPolish Academy of Sciences, Institute of Geophysics, POL, PolandPolish Academy of Sciences, Institute of Geological Sciences, POL, Poland
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2019, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States
Update Code: 201637
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