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Robert J. Stern
University of Texas at Dallas
GeomorphologyGeologyGeochemistrySubductionGeophysics
335Publications
71H-index
17.3kCitations
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Publications 394
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#1Mohamed Zaki Khedr (Kafrelsheikh University)H-Index: 12
#2Amr El-Awady (Zagazig University)
Last. Tomoaki Morishita (Kanazawa University)H-Index: 24
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Abstract The Neoproterozoic Korab Kansi mafic-ultramafic intrusion is one of the largest (100 km2) intrusions in the Southern Eastern Desert of Egypt. The intrusion consists of Fe-Ti-bearing dunite layers, amphibole peridotites, pyroxenites, troctolites, olivine gabbros, gabbronorites, pyroxene gabbros and pyroxene-hornblende gabbros, and also hosts significant Fe-Ti deposits, mainly as titanomagnetite-ilmenite. These lithologies show rhythmic layers and intrusive contacts against the surroundin...
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#1Hejun Zhu (UTD: University of Texas at Dallas)H-Index: 12
#2Xueyan Li (UTD: University of Texas at Dallas)H-Index: 1
Last. David Lumley (UTD: University of Texas at Dallas)H-Index: 18
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#1Hadi Shafaii Moghadam (Damghan University)H-Index: 17
#2LiQiuliH-Index: 42
Last. Bahman Rahimzadeh (Shahid Beheshti University)H-Index: 2
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New and compiled geochemical, isotopic, and geochronological data allow us to propose a new explanation for Paleogene oceanic magmatic rocks along the Iran-Iraq border. These rocks are represented by a thick pile (>1000m) of pillow lavas and pelagic sediments and underlying plutonic rocks. These are sometimes argued to represent a Paleogene ophiolite but there are no associated mantle rocks. Integrated zircon U-Pb ages, bulk rock major and trace element and radiogenic isotope data indicate that ...
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#1Fatemeh Sepidbar (Damghan University)
#2Hadi Shafaii Moghadam (Damghan University)H-Index: 17
Last. Yusef Vesali (UT: University of Tehran)
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Abstract A major arc-related magmatic episode is recorded in the Ediacaran-Early Cambrian (Cadomian) crust of Iran and Anatolia due to the southward subduction of Prototethyan oceanic lithosphere beneath N Gondwana. This magmatism was generated at a convergent margin, fragments of which can be traced for thousands of kilometres, from west Avalonia to the Lhasa terrane. Cadomian crustal tracts in Iran and Tauride-Anatolia are represented by abundant arc-like plutonic and volcanic rocks and a seri...
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#1Robert J. Stern (UTD: University of Texas at Dallas)H-Index: 71
#2Kamal A. Ali (United Arab Emirates University)H-Index: 23
Last. Martin J. Whitehouse (Swedish Museum of Natural History)H-Index: 62
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We analyzed gabbroic and dioritic rocks from the Atud igneous complex in the Eastern Desert of Egypt to understand better the formation of juvenile continental crust of the Arabian-Nubian Shield. Our results show the rocks are the same age (U-Pb zircon ages of 694.5 ± 2.1 Ma for two diorites and 695.3 ± 3.4 Ma for one gabbronorite). These are partial melts of the mantle and related fractionates (eNd690 = +4.2 to +7.3, 87Sr/86Sri = 0.70246 to 0.70268, zircon δ18O ∼ +5 ‰). Trace element patterns i...
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#2LiQiuli (CAS: Chinese Academy of Sciences)H-Index: 42
Last. A. Hassannezhad (Damghan University)
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#1Lowell Waite (UTD: University of Texas at Dallas)
#2Majie Fan (UTA: University of Texas at Arlington)H-Index: 15
Last. Robert J. Stern (UTD: University of Texas at Dallas)H-Index: 71
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Collision of Gondwana and Laurentia in the late Palaeozoic created new topography, drainages, and foreland basin systems that controlled sediment dispersal patterns on southern Laurentia. We utiliz...
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#1Hejun Zhu (UTD: University of Texas at Dallas)H-Index: 12
#1Hejun Zhu (UTD: University of Texas at Dallas)
Last. Jidong Yang (UTD: University of Texas at Dallas)
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Laboratory experiments and geodynamic simulations demonstrate that poloidal- and toroidal-mode mantle flows develop around subduction zones. Here, we use a new 3-D azimuthal anisotropy model constructed by full waveform inversion, to infer deep subduction-induced mantle flows underneath Middle America. At depths shallower than 150 km, poloidal-mode flow is perpendicular to the trajectory of the Middle American Trench. From 300 to 450 km depth, return flows surround the edges of the Rivera and At...
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#3Majie FanH-Index: 15
Last. Robert J. SternH-Index: 71
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#3Robert J. SternH-Index: 71
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