نتایج جستجو برای: granodiorite
تعداد نتایج: 508 فیلتر نتایج به سال:
Both Sangan and Tannurjeh magnetite deposits are Iron-oxides type. Geochemistry and petrography of source rocks at Tannurjeh and Sangan were studied in detail. The source rocks at Sangan are compused of quartz hornblende alkali syenite porphyry and quartz biotite-hornblende alkali syenite porphyry ; while The source rocks at Tannurjeh varies between hornblende quartz diorite porphyry and h...
Zavarian epitermal gold (copper) deposit is located in an intracontinental volcanic cone (stratovolcano) with the Early Miocene age, in the middle of the Urmia-Dokhtar magmatic arc. The host rocks of this mineralization include a set of basaltic, andesitic-basaltic, andesitic, dacitic, as well as granodiorite and tonal units that have been exposed in volcanic form (lava and pyroclastic) and sem...
Abstract The Kawatuna area has a complex geological structure condition and is estimated to be weak zone for hydrothermal solutions rise then accumulate into deposits in the form of veins. Based on this, it makes this interesting study. This study aims determine its influence distribution veins area. method used surface mapping structures analysis. mapping, was found that composed schist rock u...
Rare earth elements (REEs + Y) play an important role in modern industry. Heavy REEs (HREEs) are particularly critical because of their relative scarcity nature. Global HREE resources predominantly present granitoid weathering crusts southern China. Although it is well known that generally enriched alkaline rocks, contrast, the parental granitoids most Chinese deposits peraluminous. Here, we ex...
Abstract The North China Craton (NCC) has thick lithosphere in the Paleozoic (>200 km) but appears to be decratonized Mesozoic. However, actual processes operated lower crust-deep mantle are still unclear. Mesozoic granitic rocks can provide important clues NCC decratonization mechanism. Here, we conducted trace element modeling check whether partial melting of Archean crust generate the...
The Wadi Hodein area in the south Eastern Desert of Egypt is occupied by Neoproterozoic Pan-African (Precambrian) basement rocks including metamorphic and intrusive assemblages. The metamorphic assemblage comprises dismembered ophiolitic metamorphosed ultramafic rocks and island-arc calc-alkaline metavolcanics. On the other hand, the intrusive assemblage rocks include syn-tectonic tonalite-gran...
The permeability structure of the Sumikawa geothermal field in northern Japan has been the subject of an extensive pressure-transient testing investigation since 1986. In this paper, various pertinent data sets are presented and analyzed, including results showing reservoir heterogeneity (i.e. boundary) effects and apparent double porosity behavior. Interference tests between wells SB-3 and SD-...
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