Kinematics and surface fracture pattern of the Anaran basement fault zone in NW of the Zagros fold–thrust belt

Joudaki, Masoud; Saein, Ali Farzipour; Nilfouroushan, Faramarz

doi:10.1007/s00531-015-1209-8

Cited by 19 publications

(2 citation statements)

References 72 publications

(148 reference statements)

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“…Bachmanov et al 2004; Ritz et al 2006; Solaymani Azad, R itz & A bbassi, 2011) and Zagros fold-and-thrust belt (e.g. Barzegar, 1994; Hessami, K oyi & T albot, 2001; Joudaki, F arzipour-Saein & N ilfouroushan, 2016) have also been frequently demonstrated. Nevertheless, in the following discussion we have made an attempt to use model results and the rhomb-shaped features observed in nature to recognize the coeval shortening of the cover sediments and rotation of the basement blocks in both the Zagros fold-and-thrust belt and the Alborz Mountains where the regional strain field involves both left-lateral faults and thrusts.…”

Section: Discussionmentioning

confidence: 97%

Modelling role of basement block rotation and strike-slip faulting on structural pattern in cover units of fold-and-thrust belts

2016

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-A series of scaled analogue models are used to study (de)coupling between basement and cover deformation. Rigid basal blocks were rotated about a vertical axis in a 'bookshelf' fashion, which caused strike-slip faulting along the blocks and in the overlying cover units of loose sand. Three different combinations of cover-basement deformations are modelled: (i) cover shortening before basement fault movement; (ii) basement fault movement before cover shortening; and (iii) simultaneous cover shortening with basement fault movement. Results show that the effect of the basement faults depends on the timing of their reactivation. Pre-and syn-orogenic basement fault movements have a significant impact on the structural pattern of the cover units, whereas post-orogenic basement fault movement has less influence on the thickened hinterland of the overlying belt. The interaction of basement faulting and cover shortening results in the formation of rhombic structures. In models with pre-and syn-orogenic basement strike-slip faults, rhombic blocks develop as a result of shortening of the overlying cover during basement faulting. These rhombic blocks are similar in appearance to flower structures, but are different in kinematics, genesis and structural extent. We compare these model results to both the Zagros fold-and-thrust belt in southwestern Iran and the Alborz Mountains in northern Iran. Based on the model results, we conclude that the traces of basement faults in cover units rotate and migrate towards the foreland during regional shortening. As such, these traces do not necessarily indicate the actual location or orientation of the basement faults which created them.

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Section: Discussionmentioning

confidence: 97%

Modelling role of basement block rotation and strike-slip faulting on structural pattern in cover units of fold-and-thrust belts

2016

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“…In articles, which explain regional and wide areas, the structures in the Arabian foreland have a tendency to be shown simply by fold axes (Şengör et al, 1985;2008;Yılmaz, 1993;Okay, 2008). However, in Iran the structures in the Zagros foreland were detailedly studied in terms of blind thrusts, strikeslip faults and seismicity (Berberian, 1995;Hatzfeld et al, 2010;Agard et al, 2011;Farzipour-Saein et al, 2009;Joudaki et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Gazi̇antep Kuzeydoğusunun Neotektoni̇ği̇: Bozova Ve Halfeti̇ Doğrultu Atimli Faylari Ve Bunlarin Kör Bi̇ndi̇rmeler İle İli̇şki̇leri̇, Türki̇ye

Şahbaz¹,

Seyítoğlu²

2017

Maden Tetkik Ve Arama Dergisi

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Open shear fractures at depth in anticlines: insights from the Kuqa foreland thrust belt, Tarim Basin

Zhao

Lü

et al. 2019

Int J Earth Sci (Geol Rundsch)

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Kinematics and surface fracture pattern of the Anaran basement fault zone in NW of the Zagros fold–thrust belt

Cited by 19 publications

References 72 publications

Modelling role of basement block rotation and strike-slip faulting on structural pattern in cover units of fold-and-thrust belts

Modelling role of basement block rotation and strike-slip faulting on structural pattern in cover units of fold-and-thrust belts

Gazi̇antep Kuzeydoğusunun Neotektoni̇ği̇: Bozova Ve Halfeti̇ Doğrultu Atimli Faylari Ve Bunlarin Kör Bi̇ndi̇rmeler İle İli̇şki̇leri̇, Türki̇ye

Open shear fractures at depth in anticlines: insights from the Kuqa foreland thrust belt, Tarim Basin

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