نتایج جستجو برای: gabbro
تعداد نتایج: 566 فیلتر نتایج به سال:
The accretionary processes and the continental growth of Altaids are still controversial. Beishan orogen is situated in southernmost an ideal tectonic site to address these issues. In this study, we report results new field-based lithological mapping structural analysis on Huaniushan complex orogen, which composed blocks serpentinized ultramafic, gabbro, basalt, chert, limestone, other rocks wi...
Isotropic gabbros of Kermanshah ophiolite include olivine gabbro, gabbro, gabbronorite, olivine gabbronorite and troctolite. The isotropic gabbros are medium to fine grained with euhedral to subhedral orthopyroxenes, clinopyroxenes and subhedral plagioclase, olivine together with rare amphiboles. Mineral chemistry of isotropic gabbros reveal that the clinopyroxenes are diopsidic to augitic in c...
Chaharfarsakh intrusive and extrusive rocks are located in 25 Km northwest of Nehbandan and 165 Km south of Birjand and in terms of geology, suituated in the eastern of Lut block. Chaharfaraskh intrusive rocks with Jurassic age were injected into shales and sandastons Shemshak Formation. Intrusive rocks are gabbro, diorite, synogranite, quartz monzonite, hornblend tonalite, granodiorite, granit...
The Kuh-e Mish plutonic complex (KPC) is located about 30 km south of Sabzevar. Based on tectonic division, it is part of Sabzevar zone. The Stratigraphic units of the area are conglomerate, tuff, and sandstone of the Paleogene, radiolarites, andesite and tuff unit of Upper Cretaceous. This collection consists of two plutonic rocks types. (1): The granitoid complex of northern Kuh-e Mish which ...
The Kangareh gabbro body is located in south of the Kurdistan Povince and southwest of the Qorveh area. The area belongs to the Sanandaj-Sirjan zone. Tectonic evolutions during Mezozoic and magmatism, due to subduction of the Neo-Tethys oceanic lithosphere beneath the Iran microplate, led to formation of various igneous bodies in this area. Chemical analysis of pyroxene minerals and whole rock ...
: Despite that, in the Alvand complex, the mafic-intermediate rocks (gabbros, diorites and tonalites) are mostly older than felsic rocks (granodiorites and monzogranites), and mineralogical and geochemical discontinuity is seen between them, there are evidence that indicate they have sometimes been co-existed. With the studies on field relationship of rocks, xenocrysts assemblages, synplutonic ...
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