Crustal Stress Map of Iran: Insight From Seismic and Geodetic Computations

Zarifi, Zoya; Nilfouroushan, Faramarz; Raeesi, M.

doi:10.1007/s00024-013-0711-9

Cited by 70 publications

(50 citation statements)

References 58 publications

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“…13). This azimuth of compressional stress resulted from our analysis is close to the value (σ 1 ) deduced from analyses of earthquake and geodetic data (Zarifi et al 2014). Casini et al (2011) carried out a fracture study in the Lurestan region.…”

Section: Discussionsupporting

confidence: 53%

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

Joudaki

Saein

Nilfouroushan

2015

Int J Earth Sci (Geol Rundsch)

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Section: Discussionsupporting

confidence: 53%

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

Joudaki

Saein

Nilfouroushan

2015

Int J Earth Sci (Geol Rundsch)

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“…Continental collision is still active, as manifested by significant seismicity, fault slip rates, and GPS velocities ( Figure 2) (Bettinelli et al, 2006;Burgess et al, 2012;Gan et al, 2007;Khodaverdian, Zafarani, & Rahimian, 2015;Mousavi, 2016;Raeesi et al, 2016;Reilinger et al, 2006;Socquet et al, 2006;Vernant et al, 2004;Vigny et al, 2003;Walpersdorf et al, 2014;Zarifi, Nilfouroushan, & Raeesi, 2013). The deformation is not only localized around plate margins but is diffused up to hundreds of kilometers away from the suture zones.…”

Section: Introductionmentioning

confidence: 99%

Neotectonic Deformation in Central Eurasia: A Geodynamic Model Approach

et al. 2017

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Central Eurasia hosts wide orogenic belts of collision between India and Arabia with Eurasia, with diffuse or localized deformation occurring up to hundreds of kilometers from the primary plate boundaries. Although numerous studies have investigated the neotectonic deformation in central Eurasia, most of them have focused on limited segments of the orogenic systems. Here we explore the neotectonic deformation of all of central Eurasia, including both collision zones and the links between them. We use a thin‐spherical sheet approach in which lithosphere strength is calculated from lithosphere structure and its thermal regime. We investigate the contributions of variations in lithospheric structure, rheology, boundary conditions, and fault friction coefficients on the predicted velocity and stress fields. Results (deformation pattern, surface velocities, tectonic stresses, and slip rates on faults) are constrained by independent observations of tectonic regime, GPS, and stress data. Our model predictions reproduce the counterclockwise rotation of Arabia and Iran, the westward escape of Anatolia, and the eastward extrusion of the northern Tibetan Plateau. To simulate the observed extensional faults in the Tibetan Plateau, a weaker lithosphere is required, provided by a change in the rheological parameters. The southward movement of the SE Tibetan Plateau can be explained by the combined effects of the Sumatra trench retreat, a thinner lithospheric mantle, and strik‐slip faults in the region. This study offers a comprehensive model for regions with little or no data coverage, like the Arabia‐India intercollision zone, where the surface velocity is northward showing no deflection related to Arabia and India indentations.

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“…1b illustrates the maximum and minimum horizontal stress orientations in Iran. (Zarifi et al 2013) As shown in Fig. 1, the orientation of borehole breakouts that indicate azimuth of S h is about 43°and the orientation of induced fractures that indicate azimuth of S H is about 133°.…”

Section: Applications and Validation Of The Resultsmentioning

confidence: 87%

Determination of minimum and maximum stress profiles using wellbore failure evidences: a case study—a deep oil well in the southwest of Iran

Molaghab

Taherynia

Aghda

et al. 2017

J Petrol Explor Prod Technol

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The main objective of this paper is estimating the horizontal stresses and calibration of the log-derived horizontal stress profiles in deep oil wells according to their wall failure evidences, including both compressive (breakouts) and tensile failures (drilling-induced tensile fractures). Estimation of the horizontal stress profiles using well logs is one of the standard methods in the oil industry. Another method for estimating horizontal stresses is analyzing failure evidences in the wellbore wall. By integrating these two methods, a practical strategy was followed in this research to determine the horizontal stress profiles. By this strategy, minimum and maximum horizontal stress profiles are determined in such a way that the stress concentration at the wellbore wall at the tensile fracture identified depths, exceeds the formation tensile strength, while at the breakouts identified depths it exceeds the compressive strength of the formation. An advantage of this procedure is that does not require to measure in situ stresses. Also, due to the presence of a large number of breakouts and the induced fractures detected in different zones of a deep wellbore, log-derived stress profile calibration is done using the stress state in different zones that causes to increase the accuracy and reliability of the obtained horizontal stress profile. The proposed solution was applied to determine the horizontal stress profiles in a deep oil well in the southwest of Iran as a real case.

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Crustal Stress Map of Iran: Insight From Seismic and Geodetic Computations

Cited by 70 publications

References 58 publications

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

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

Neotectonic Deformation in Central Eurasia: A Geodynamic Model Approach

Determination of minimum and maximum stress profiles using wellbore failure evidences: a case study—a deep oil well in the southwest of Iran

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