نتایج جستجو برای: granodiorite porphyry
تعداد نتایج: 1453 فیلتر نتایج به سال:
The Traveler Rhyolite-Katahdin Pluton Igneous Complex of of the Lower Devonian age in Northcentral Maine consists of two penecontemporaneous but genetically independent magmatic episodes. The earlier, voluminous episode includes the Traveler Rhyolite and the Katahdin Granite, whereas the slightly younger episode is comprised of minor intrusions of Horserace Quartz Diorite, Harrington Lake Porph...
The Kalmakyr deposit in Uzbekistan is one of the world’s largest gold-rich porphyry Cu deposits, and mineralization was proposed to be closely associated with emplacement latest intrusive phases, that is, granodiorite porphyry. However, it still unclear which features these ore-bearing intrusions are crucial for enormous metal enrichment how they correlate magmatic fertility. In this study, we ...
The Grouh area is located about 19 km north-east of Sarduyeh city in Kerman Province. The major lithological units in this area include Eocene andesite and andesitic basalt. Oligo-Miocene intrusive units include diorite, quartz diorite and granodiorite; while pyroclastic units include tuff and breccia. The alteration in the Grouh area is remarkable due to the penetration of the intrusive masses...
The Shand Cu-Mo deposit is located in the Orkhon-Selenge depression, Northern Mongolia. It lies near Erdenetiin Ovoo porphyry deposit, which together define one of Mongolian’s most economically significant metallogenic belts. In (Au?) several ore related breccia types are associated with porphyritic granodiorite intrusions, and they contain pre-, synand post-mineralized stocks, magmatic-hydroth...
The Khezr-Abad area is located in southwest of Yazd in central Iran at the intersection with the Central Iranian Volcano-Plutonic Belt (Urumieh-Dokhtar Belt). The Darreh-Zerreshk and Ali-Abad porphyry copper deposits are the most important deposits in this district. These deposits are associated with Oligocene-Miocene (18-28 Ma) granitoid intrusions which consisted mainly of quartzmonzonite, qu...
The Kuh Zar Au-Cu deposit is located about 100 km southeast of Damaghan city. Structurally, this area is part of the Alborz Magmatic Assemblage (AMA). The oldest rock units in the Firuzeh-Gheychi area consists of syenogranite and tourmaline biotite granodiorite units. These units were intruded by quartz monzonite porphyry stocks. Pyroxene diorite porphyry and hornblende diorite porphyry are you...
We present high-precision chemical abrasion-isotope dilution-thermal ionization mass spectrometry (CA-IDTIMS) U-Pb zircon and isotope dilution-negative-thermal ionization mass spectrometry (ID-N-TIMS) Re-Os molybdenite geochronology of the world-class Tibetan Qulong porphyry Cu-Mo deposit. The data is used to constrain the timing, duration, and to yield implications for the ore-forming processe...
Petrography and Geochemistry of the Intrusive Rocks at the Diorite-Hosted Regnault Au Mineralization
Archean greenstone belts are renowned for their Au endowment. Gold can be associated with orogenic style of mineralization and diorite-hosted Au-Cu disseminated sulfides interpreted as a porphyry mineralization. The Regnault project, located in the Frotet–Evans belt (Superior craton), is structurally-controlled an unclear metallogenic model. aim this study to evaluate fertility granodiorite-dio...
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