Journal ArticleDOI
Late Cretaceous subduction-related magmatism on the southern edge of Sabzevar basin, NE Iran
Zakie Kazemi,Habibollah Ghasemi,Romain Tilhac,William L. Griffin,Hadi Shafaii Moghadam,Suzanne Y. O'Reilly,Fardin Mousivand +6 more
TLDR
In this article, the authors focus on the Late Cretaceous, non-ophiolitic Sabzevar magmatic rocks, and present both precise U-Pb ages and a tectonomagmatic scenario for the genesis of these igneous rocks.Citations
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Journal ArticleDOI
Neotethyan Subduction Ignited the Iran Arc and Backarc Differently
H. Shafaii Moghadam,Qiu-Li Li,Xiangying Li,Robert J. Stern,Gilles Levresse,José Francisco Santos,M. Lopez Martinez,Mihai N. Ducea,Mihai N. Ducea,Ghasem Ghorbani,A. Hassannezhad +10 more
TL;DR: In this paper, geochemical and isotopic characteristics coupled with zircon U-Pb geochronology were used to identify the different magmatic style of the Iran convergent margin, an extensional system that evolved over 100 Myr.
Journal ArticleDOI
Fossil seamount in southeast Zagros records intraoceanic arc to back-arc transition: New constraints for the evolution of the Neotethys
Guillaume Bonnet,Guillaume Bonnet,Philippe Agard,Hubert Whitechurch,Marc Fournier,Samuel Angiboust,Benoit Caron,Jafar Omrani +7 more
TL;DR: In this paper, a combination of structural, geochemical and geochronological data was used to study the evolution of a Late Cretaceous ophiolite fragment of the Neotethys (the Siah Kuh massif, Southern Iran), now sandwiched in the Zagros suture zone.
Journal ArticleDOI
The eastern iranian orocline
TL;DR: The Eastern Iranian Orogen as mentioned in this paper is a large scale India-Eurasia collisional event and the subsequent amalgamation of the Afghan and Lut micro-continents, including the Neo-Tethyan accretionary complexes and associated island arcs.
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Subduction initiation and back-arc opening north of Neo-Tethys: Evidence from the Late Cretaceous Torbat-e-Heydarieh ophiolite of NE Iran
Hadi Shafaii Moghadam,Hadi Shafaii Moghadam,Robert J. Stern,William L. Griffin,Mohamed Zaki Khedr,Maria Kirchenbaur,Maria Kirchenbaur,Chris J. Ottley,Scott A. Whattam,Jun-Ichi Kimura,Ghasem Ghorbani,Sarah E. M. Gain,Suzanne Y. O'Reilly,Akihiro Tamura +13 more
TL;DR: In this paper, the authors focus on the effects of a Late Cretaceous subduction-initiation (SI) event in Iran and show how SI caused enough extension to open a back-arc basin in NE Iran.
Journal ArticleDOI
Subduction initiation causes broad upper plate extension: The Late Cretaceous Iran example
TL;DR: In this paper, the authors show that a major SI event is recorded in the Late Cretaceous forearc ophiolites of Iran, related to the subduction of Neotethyan oceanic lithosphere beneath Eurasia, causing extreme extension of the Iranian plate, up to ~1000 km away from the proto-trench and generated a series of back-arc oceanic basins, sedimentary basins and core complexes and exhumed high-P rocks.
References
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Chemical and isotopic systematics of oceanic basalt : implications for mantle composition and processes
TL;DR: In this article, trace-element data for mid-ocean ridge basalts and ocean island basalts are used to formulate chemical systematics for oceanic basalts, interpreted in terms of partial-melting conditions, variations in residual mineralogy, involvement of subducted sediment, recycling of oceanic lithosphere and processes within the low velocity zone.
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Chemical and isotopic systematics of oceanic basalts. Implications for Mantle Composition and Processes
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Approximation of terrestrial lead isotope evolution by a two-stage model
J.S. Stacey,Jan Kramers +1 more
TL;DR: In this paper, a two-stage model for terrestrial lead isotope evolution is proposed, which permits the age of the earth to be that of the meteorite system and also yields good model ages for samples of all ages.
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Trace element discrimination diagrams for the tectonic interpretation of granitic rocks
TL;DR: In this article, a data bank containing over 600 high quality trace element analyses of granites from known settings was used to demonstrate using ORG-normalized geochemical patterns and element-SiO2 plots that most of these granite groups exhibit distinctive trace element characteristics.