نتایج جستجو برای: suprasubduction zone setting
تعداد نتایج: 360763 فیلتر نتایج به سال:
the kuhshah ultramafic complex is located in the south-east of sanandaj-sirjan metamorphic zone, near the probable remnants of neotethys plate in iran. it consists of highly depleted harzburgites, dunites, chromitite bands and altered gabbros. the ultramafic parts have been intruded by numerous clinopyroxenite dykes and veins. in the harzburgites, there are different generations of olivine, ort...
Ab-Bid ultramafic complex is a part of Esfandagheh-HadjiAbad coloured mélange at the north of Hormozgan Province. It contains harzburgite, lherzolite, dunites, pyroxenite and chromitite. Dunites occur either as large and continuous masses or as dykes which have been intruded into the harzburgites. Mineral chemistry evidences show that the origin of these two types of dunites are completely diff...
Chromite is one of the important mineral in all lithologies of the Dehsheikh ultramafic complex (South of Baft, Kerman Province) with different shapes and abundances. In the Dehsheikh harzburgites, this mineral present with two distinct generations. The first generation is refractory with variable Cr# values (between 46.2 to 60%) and contains low Al2O3 content (between 21 to 44.4 wt%). The seco...
The Kuhshah ultramafic complex is located in the south-east of Sanandaj-Sirjan metamorphic zone, near the probable remnants of Neotethys plate in Iran. It consists of highly depleted harzburgites, dunites, chromitite bands and altered gabbros. The ultramafic parts have been intruded by numerous clinopyroxenite dykes and veins. In the harzburgites, there are different generations of olivine, ort...
New geochemical data were presented for the mafic (basalts and gabbros) ultramafic (dunites, serpentinites pyroxenites) rocks from Mawat ophiolite exposed in Zagros suture zone northeastern Iraq. The mantle section of is composed serpentinized peridotites, harzburgites, dunites, chromitites pyroxenite dykes. crustal layered amphibole-rich gabbros, pegmatitic gabbros as well basalts minor felsic...
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