Presence of a layered lithosphere beneath the Zagros collision zone

Mohammadi, Elham; Sodoudi, F.; Kind, R.; Rezapour, Mehdi

doi:10.1016/j.tecto.2013.09.017

Cited by 27 publications

(20 citation statements)

References 66 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Pn velocities(Al--Lazki et al, 2003 Amini et al, 2012) and P-and S-wave tomography(Alinaghi et al, 2007; Kaviani et al, 2007;Paul et al, 2010) -that found low velocities in the uppermost mantle of Central Iran. But, our findings do not support the idea of a breakoff of the oceanic Neo-Tethyan slab beneath Central Iran as suggested byMohammadi et al (2013a) andShomali et al (2011). A sketch representing a new model for the deep structures beneath Iranian Plateau based on our results is presented inFig.…”

contrasting

confidence: 80%

The deep structure of the Iranian Plateau

et al. 2015

View full text Add to dashboard Cite

High resolution structures of the lithosphere-asthenosphere system beneath a seismic profile in Iran are obtained by the simultaneous inversion of data from receiver functions and fundamental mode Rayleigh wave group velocity and validated by modeling Bouguer gravity anomaly data. The seismic data are gathered over a profile extending across Zagros, Sanandaj-Sirjan Zone (SSZ), Urumieh-Dokhtar magmatic arc (UDMA), Central Iran, Alborz-Binalud Mountain ranges and Kopeh Dagh Mountain ranges. The results confirm the presence of crustal roots at the north and south of Iranian Plateau where it meets the Arabian Plate and Eurasia. The high velocity lithosphere of the Arabian Plate gently plunges NNE-ward beneath Central Iran supporting the subduction of the continental lithosphere responsible for the seismicity of the area. The crust and lithosphere are thinner beneath Central Iran, where two low velocity structures are very likely related to magma sources of the UDMA and in east of Iran, around Lut block, where the volcanism shows calcalkaline subduction-related geochemistry. The crustal-lithospheric root to the north of the Iranian Plateau may represent the relict of a previous "cimmeric" subduction zone. Therefore the Iranian lithosphere-asthenosphere system could be the result of the coalescence of two separate subduction zones. © 2014 International Association for Gondwana Research

show abstract

contrasting

confidence: 80%

The deep structure of the Iranian Plateau

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Following previous studies (e.g., Kaviani et al, ; Mahmoodabadi et al, ; Motaghi et al, ; Priestley et al, ), we attribute this high‐V anomaly to be the Arabian lithosphere. Previous seismological studies show that there is a thick lithosphere beneath the Zagros with a thickness of ~170–225 km (Mohammadi et al, ; Motaghi et al, ; Priestley et al, ). Our results are generally consistent with the previous results and suggest that the Arabian lithosphere has subducted beneath the Zagros orogen.…”

Section: Discussionmentioning

confidence: 98%

Mantle Dynamics of the Eastern Mediterranean and Middle East: Constraints From P‐Wave Anisotropic Tomography

Wei

Zhao

Wei

et al. 2019

Geochem Geophys Geosyst

View full text Add to dashboard Cite

High‐resolution images of P‐wave anisotropic tomography beneath the Eastern Mediterranean and Middle East are determined by inverting a large number of high‐quality P‐wave arrival times. Our results clearly show along‐strike variations of subducting slabs in the Hellenic subduction zone. At least three high‐velocity anomalies are imaged beneath and behind the north Hellenides, which are associated with the subducting Hellenic slab at different stages, while in regions further south, a single slab is revealed that has subducted down to a depth of ~1,100 km. The slab feature is not prominent in the Cyprus subduction zone, but a fine‐scale high‐velocity structure is revealed beneath the central Anatolia, which may reflect the detached Cyprus slab. Trench‐parallel fast‐velocity directions occur in the forearc mantle wedge of the Hellenic subduction zone, which may reflect mantle flow induced by slab curvature. In the backarc north Aegean and westernmost Anatolia, dominant NNE‐SSW to N‐S fast‐velocity directions exist in the shallow mantle, which accord well with the extensional direction of present deformation at the surface, suggesting a vertically coherent deformation in the lithosphere. Our results reveal a large‐scale mantle flow beneath western Arabia, which is possibly related to the Zagros and Caucasus orogens and westward motion of the Anatolia lithosphere. The Arabian lithospheric plate is thinner beneath the Zagros than that under the Mesopotamian Foredeep, suggesting that a large portion of the crust was scrapped off from the subducted Arabian lithosphere during the Zagros orogen.

show abstract

“…The variations of Q 0 and n versus lapse time for two datasets is depicted in Figure 7 and Figure 8. As it can be seen in Figure 7-a, the Q 0 values of Zagros and SSZ become larger than those of WA and NWCI at lapse time about 20 s. The average depth at this lapse time is about 75 km, and it approximately coincides with a low velocity zone beneath WA and NWCI and with a high velocity (Arabian lithosphere) zone beneath Zagros and SSZ [Sodoudi et al, 2009;Mohammadi et al, 2013;Motaghi et al, 2017;Rastgoo et al, 2018].…”

mentioning

confidence: 77%