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High resolution image of uppermost mantle beneath NE Iran continental collision zone
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Geophysics.
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2012 (English)In: Physics of the Earth and Planetary Interiors, ISSN 0031-9201, E-ISSN 1872-7395, Vol. 208-209, 38-49 p.Article in journal (Refereed) Published
Abstract [en]

We invert 3775 relative P wave arrival times using the ACH damped least square method of Aki et al. (1977) to study upper mantle structure beneath the NE Iran continental collision zone. The data for this study were recorded by 17 three component broad-band stations operated from August 2006 to February 2008 along a profile from the center of Iranian Plateau, near Yazd, to the northeastern part of Iran on the Turan Platform just north of the Kopeh Dagh Mountains. The results confirm the previously known low velocity upper mantle beneath Central Iran. Our tomographic model reveals a deep high velocity anomaly. The surficial expressions of this anomaly are between the Ashkabad and Doruneh Faults, where the resolution and ray coverage are good. A transition zone in uppermost mantle is recognized under the Binalud foreland that we interpreted as suture zone between Iran and Turan platform. Our results indicate that Atrak Valley which is the boundary between the Binalud and Kopeh Dagh Mountains can be considered as the northeastern suture of the Iranian Plateau where Eurasia and Turan Platform under-thrust beneath the Binalud range and Central Iran.

Place, publisher, year, edition, pages
2012. Vol. 208-209, 38-49 p.
Keyword [en]
ACH method, Teleseismic tomography, NE Iran, Continental collision zone
National Category
Natural Sciences
URN: urn:nbn:se:uu:diva-185640DOI: 10.1016/j.pepi.2012.07.006ISI: 000310180500004OAI: oai:DiVA.org:uu-185640DiVA: diva2:572340
Available from: 2012-11-27 Created: 2012-11-27 Last updated: 2012-11-27Bibliographically approved

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