Lithospheric structure of NW Iran from P and S receiver functions

Taghizadeh-Farahmand, Fataneh; Sodoudi, F.; Afsari, Narges; Glodny, Johannes

doi:10.1007/s10950-010-9199-2

Cited by 37 publications

(18 citation statements)

References 29 publications

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“…Hansen et al (2007) found also in S receiver functions a thin lithosphere below the Red Sea and thickening toward the interior of the Arabian Peninsula. Sodoudi et al (2009) found in S receiver functions the LAB beneath the Alborz Mountains in Iran at 90 km depth, similar to Taghizadeh-Farahmand et al (2010), who found the LAB in the northwest of Iran near 85 km depth. Dü ndar et al (2011) mapped the LAB in the region of southern Spain, the Alboran Sea, and northern Morocco using S receiver functions.…”

Section: Europe and The Middle Eastsupporting

confidence: 78%

Deep Earth Structure - Transition Zone and Mantle Discontinuities

Kind

2015

Treatise on Geophysics

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Section: Europe and The Middle Eastsupporting

confidence: 78%

Deep Earth Structure - Transition Zone and Mantle Discontinuities

Kind

2015

Treatise on Geophysics

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“…A significant consideration is the relationship between present-day elevation and crustal thickness. Here, we have assembled a database of crustal thickness estimates derived from published receiver function analyses (Figure 2; supporting information Data Set S1; C¸akir & Erduran, 2004& Erduran, , 2011Erduran, 2009;G€ ok et al, 2008;Saunders et al, 1998;Taghizadeh-Farahmand et al, 2010;Tezel et al, 2010Tezel et al, , 2013Vanacore et al, 2013;van der Meijde et al, 2009;Zhu et al, 2006;Zor et al, 2003;2006). These analyses use the recorded travel times and amplitudes of direct and converted phases from teleseismic earthquakes to constrain the shear wave velocity structure of the crust and upper mantle.…”

Section: Receiver Function Analysesmentioning

confidence: 99%

Neogene Uplift and Magmatism of Anatolia: Insights From Drainage Analysis and Basaltic Geochemistry

McNab

Ball

Hoggard

et al. 2018

Geochem Geophys Geosyst

102

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It is agreed that mantle dynamics have played a role in generating and maintaining the elevated topography of Anatolia during Neogene times. However, there is debate about the relative importance of subduction zone and asthenospheric processes. Key issues concern onset and cause of regional uplift, thickness of the lithospheric plate, and the presence/absence of temperature and/or compositional anomalies within the convecting mantle. Here, we tackle these interlinked issues by analyzing and modeling two disparate suites of observations. First, a drainage inventory of 1,844 longitudinal river profiles is assembled. This database is inverted to calculate the variation of Neogene regional uplift through time and space by minimizing the misfit between observed and calculated river profiles subject to independent calibration. Our results suggest that regional uplift commenced at 20 Ma in the east and propagated westward. Second, we have assembled a database of geochemical analyses of basaltic rocks. Two different approaches have been used to quantitatively model this database with a view to determining the depth and degree of asthenospheric melting across Anatolia. Our results suggest that melting occurs at depths as shallow as 60 km in the presence of mantle potential temperatures as high as 1400°C. There is evidence that temperatures are higher in the east, consistent with the pattern of subplate shear wave velocity anomalies. Our combined results are consistent with isostatic and admittance analyses and suggest that elevated asthenospheric temperatures beneath thinned Anatolian lithosphere have played a first‐order role in generating and maintaining regional dynamic topography and basaltic magmatism.

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“…Investigation of the earth's lithosphere, particularly the Lithosphere-Asthenosphere Boundary (LAB) is a very important topic with great scientific sense related to global dynamics of the earth and can provide new insights into a better understanding of the mechanism of formation and history of deformation of the Iranian plateau. Studies focused on the nature and depth of the LAB beneath Iranian plateau are rare (e.g., Taghizadeh-Farahmand et al, 2010;Sodoudi et al, 2009), whereas significant constraints on the nature of the crustal structure beneath different tectonic zones of Iran have been provided yet.…”

Section: Introductionmentioning

confidence: 99%

New constraints on lithospheric thickness of the Iranian plateau using converted waves

et al. 2013

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Study of mantle lithosphere plays a key role to reveal predominant tectonic setting process of a region. The current geological and tectonic setting of Iran is due to the ongoing continental-continental collision of Arabian and Eurasian plates. We applied a combined P and S receiver function analysis to the teleseimic data of 9 permanent broadband seismic stations of the International Institute of Earthquake Engineering and Seismology (IIEES) located in different tectonic zones of Iranian plateau. More than 4 years of data were used to estimate the thickness of the crust and mantle lithosphere. According to our results, the crust is 50 km thick beneath the Zagros Fold and Thrust Belt (ZFTB). We found the maximum Moho depth of approximately 70 km under the Sanandaj-Sirjan zone (SSZ) indicating the overthrusting of the crust of Central Iran onto the Zagros crust along the Main Zagros Thrust (MZT). Below the northeasternmost part of the Urumieh-Dokhtar Magmatic Arc (UDMA) and Central Iran, the Moho becomes shallower and lies at 40 km depth. Towards northeast, beneath the Alborz zone, the crust is 55 km thick. Based on S receiver functions, we provided new insights into the thickness of the Arabian and Eurasian lithospheres. The location of the boundary between these plates was estimated to be beneath the SSZ, which is slightly shifted northeastward relative to the surficial expression of the MZT. Furthermore, the Arabian plate is characterized by the relatively thick lithosphere of about 130 km beneath the ZFTB reaching 150 km beneath the SSZ, where the thickest crust was also observed. This may imply that the shortening across the Zagros is accommodated by lithospheric thickening. In contrast, the UDMA and Central Iran are recognized by the thin lithosphere of about 80-85 km. This thin lithosphere may be associated with the asthenospheric upwelling caused by either lithospheric delamination or Neo-Tethys slab detachement beneath the Zagros collision zone.

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Lithospheric structure of NW Iran from P and S receiver functions

Cited by 37 publications

References 29 publications

Deep Earth Structure - Transition Zone and Mantle Discontinuities

Deep Earth Structure - Transition Zone and Mantle Discontinuities

Neogene Uplift and Magmatism of Anatolia: Insights From Drainage Analysis and Basaltic Geochemistry

New constraints on lithospheric thickness of the Iranian plateau using converted waves

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