Results 11 to 20 of about 2,647 (217)
Frontiers in Earth Science, 2022 In the first article, we have reported petrological data for a new, glass-bearing orthopyroxenite vein cutting a sub-arc mantle xenolith from Kamchatka.
A. Bénard
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Geosciences, 2017 Cr-spinels from ultramafic rocks from Lokris (Megaplatanos and Tragana), and Beotia (Ypato and Alyki) ophiolitic occurrences were studied. These rocks comprise principally harzburgite with minor dunite. Small amounts of clinopyroxene-rich harzburgite and
Panagiotis Pomonis, Andreas Magganas
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, 2022 © 2022 Elsevier LtdIn this study, the harzburgite-dunite suite in the mantle section of the Kırdağ ophiolite outcropping in the east of the Eastern Pontides (Erzurum, North-eastern Turkey) was examined in textural, mineral and whole-rock geochemical ...
Bilici, Özgür
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Mantle heterogeneity beneath the oceanic crust of forearc basin of Nain ophiolite based on the composition of pyroxenes in harzburgites [PDF]
پترولوژیIntroductionThe Nain ophiolite in Central Iran has been the subject of numerous petrological investigations, particularly focusing on its ultramafic rocks.
Elahe Safdari, Nargess Shirdashtzadeh
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Signals of 660-km topography and harzburgite enrichment in seismic images of whole-mantle upwellings [PDF]
, 2017 Various changes in seismic structures across the mantle transition zone (MTZ) indicate that it may hamper thermal and chemical circulation. Here we show how thermal elevation of the postspinel phase transition at 660 km depth plus harzburgite segregation
Ritsema, J +8 more
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Introduction of meta-harzburgites using Contact originated Minerals in the Gishaki ophiolitic area, as a part of Iranian Alpine type ophiolites [PDF]
Desert, 2020 In this paper, we investigated two originated metamorphosed harzburgites of the metaperidotite complex from the northern part of the Gishaki area.
B. Bahrambeygi +2 more
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Chemistry and determination of tectonomagmatic setting in mantle peridotites from iron-copper area of the Heydarabad [PDF]
پترولوژی, 2019 The Heydarabad ophiolitic mélange is hosted in the Sistan suture zone, which marks the boundary between the Lut and the Afghan continental blocks and comprises of mantle peridotites and crustal sequence.
Houshang Pourkaseb +2 more
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Enstatite nodules in the harzburgites of the Southern Urals
LITHOSPHERE (Russia), 2021 Research subject. At two points on the northern shore of Lake Uvil’dy in the Southern Urals, two outcrops of unique rocks – nodular harzburgites – were discovered in the tectonic lenses of serpentinite melange among garnet-biotite gneisses of the Ilmenogorsko-Vishnevogorsky Сomplex.
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Journal of Economic Geology, 2021 Introduction Podiform chromite deposits are small magmatic chromite bodies formed in the lower section of an ophiolite complex. The Khoy ophiolite covers an extensive area in the northwest of Iran along the Iran-Turkey border.
Behnam Mehdikhani, Ali Imamalipour
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, 2021 New petrological and geochemical data for lherzolite, harzburgite, and gabbros in the Darbut ophiolitic mélange of west Junggar are combined to constrain the geological evolution of the Darbut ophiolite.
Qingmin Zhu (11635654) +1 more
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