نتایج جستجو برای: monzodiorite
تعداد نتایج: 84 فیلتر نتایج به سال:
Khanlogh magnetite-apatite deposit is located in northwest of Neyshabour. This area is situated in Binaloud structural zone and east of Tertiary Quchan-Sabzevar magmatic arc. Geology of the area is dacitic volcanic rock intruded by Oligocene subvolcanic rocks with composition of quartz monzodiorite and granodiorite. Miocene sedimentary rocks trusted on them. The magmatism in the area shows char...
The Rangraz area is located about 20 km north of Saveh, which is situated in the central part of Uromieh–Dokhtar magmatic arc. The exposed rocks in the study area consist of a volcanic and volcanoclastic subvolcanic dikes and quartz monzodiorite intrusions. Mineralization in this area is mostly related to the silicic, argillic and chloritization alteration assemblages. The Rangraz area consists...
The Qara Sabalan manganese deposit belongs to the Qara Dagh-Sabalan metallogenic zone and is located in the eastern part of this zone (north of Meshginshahr). Geology of the area include volcanic (pyroclastic) rocks and the small outcrop of sub volcanic bodies (quartz-monzodiorite) with Eocene to Oligocene age. Mn deposit is hosted within the trachyandesite and tuff. Mn mineralization occurs as...
چکیده ندارد.
A diversity of Devonian-Carboniferous volcanic arcs and granitoid intrusions are exposed in the Gurvansaykhan arc terrane southern Mongolia. Several giant porphyry Cu-Au-Mo deposits associated with within these arcs. The Bronze Fox deposit located central part is an example a potentially economic affinity adakite-like (i.e. 428 Mt grading 0.26% to 0.30% Cu for up 2,437 Mlb copper 0.84 Moz gold)...
The major syenitic bodies of Iran are spread on northwestern part, East Azerbaijan Province, which belong to late Eocene, early Oligocene magmatisem. Abbasabbad–Bashkand pluton is one of these intrusions, which is located as some minor and autonomous bodies in western side of the main Bozghush nepheline syenite pluton. Porphyritic, microgranular and porphyritic microgranular are common textures...
Toye-Darvar granitoidic pluton is located in southwest of Damghan, in the southern flanke of eastern Alborz structural zone. Despite of its uniform appearance in the field, this pluton is composed of a rock with a wide range of composition including of diorite, monzodiorite, monzonite, quartzmonzonite and granodiorite with monzonite-quartzmonzonite prevalence. Based on the field observations, t...
A-type granitoids, either intruded into greenschist facies volcano-sedimentary sequence or emplaced at the contact between lowand high-grade terranes, constitute a significant proportion of the granitoid rocks in the Precambrian of western Ethiopia. These granitoids are characterized by Fe-rich biotite, ferro-hornblende, alkali-amphiboles, and alkali pyroxenes. High total alkalis, high FeOT/MgO...
introduction pyrite is the most abundant sulfide mineral in low sulfidation ore deposits. experimental studies have shown that low-temperature ( 200°c) from hydrothermal or metamorphic fluids (butler and rickard, 2000). framboidal pyrite mostly occurs in sedimentary environments, though it could also form during metamorphism and hydrothermal alteration (scott et al., 2009). the pyrite formed te...
توده های نفوذی مهرآباد واقع در جنوب شرق اردستان، با سن تقریبی الیگوسن- میوسن، در بخش میانی کمربند ماگمایی ارومیه - دختر جای گرفته اند. این توده ها با ترکیب سنگ شناسی گرانیت، گرانودیوریت، تونالیت و کوارتز مونزودیوریت، در سنگ های آتشفشانی ائوسن منطقه تزریق شده اند. توده های نفوذی مورد مطالعه با ماهیت کالک آلکالن و متا آلومین تا جزئی پرآلومین، جزو سنگ های گرانیتوئیدی نوع i محسوب می شوند. الگوی تغی...
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