نتایج جستجو برای: lithogeochemistry
تعداد نتایج: 48 فیلتر نتایج به سال:
Abstract The eastern Dunnage Zone of the central Newfoundland Appalachians hosts Paleozoic orogenic gold mineralization along a northeast-trending, crustal-scale fault corridor that extends for more than 200 km. This system is characterized by polyphase, structurally controlled, quartz vein systems cut Neoproterozoic granitoid rocks and unconformably overlying syntectonic, polymict conglomerate...
Khunik area is located in eastern Iran, about 106 km south of Birjand. Preliminary prospecting in the area, using ASTER mineral mapping (SAM) for locating possible alteration zone in the area provided satisfactory results when checked with field observation. The area comprises outcrops of Paleocene to Eocene volcanics, which was intruded telescopically by several subvolcanic intermediate bodies...
Abstract The Yukon-Tanana terrane in the Finlayson Lake district, Yukon, represents one of first arc–back-arc systems that formed adjacent to Laurentian continental margin mid-Paleozoic. Back-arc rocks contain many large and high-grade volcanogenic massive sulfide (VMS) deposits. This study integrates U-Pb zircon geochronology, lithogeochemistry, Hf-Nd isotopes establish precise controls on tec...
Volcanic rocks of the Ediacaran Musgravetown Group on Bonavista Peninsula, Avalon terrane, Newfoundland, include basal ca. 600 Ma calc-alkaline basalt succeeded by continental tholeiite and alkaline rhyolite 592 Plate Cove volcanic belt (Bull Arm Formation), indicating a change from subduction-related to extensionrelated tectonic regimes during that interval. Alkalic basalts northeastern (Dam P...
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