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The Ailaoshan-Jinshajiang porphyry belt located in the Sanjiang area of eastern Tibetan Plateau is one of the major polymetallic metallogenic belts in China. However, the nature and genesis of magmatic intrusions associated with the porphyry copper mineralization in this belt remain contentious. Here we focus on the Bijiashan Deposit, one of the large-scale porphyry copper deposits in this area, to...
The studied micaschist from the northeastern Fichtelgebirge crystalline complex (FC) contains mm-sized garnet with a foam structure. Staurolite formed at the margin of garnet. Relics of staurolite are enclosed in mm-sized andalusite porphyroblasts. Garnet exhibits prograde concentric zonation with the pyrope component increasing from 1 to 6 mol%. Cores of potassic white-mica grains locally contain...
The Daheishan porphyry Mo deposit in Jilin Province, NE China, is classified as a giant porphyry deposit with a total reserve of 1.87 Mt. @0.07% Mo. It is located within the Lesser Xing'an-Zhangguangcai Ranges at the eastern part of Central Asian Orogenic Belt, which was tectonically shaped by both the Paleo-Asian Ocean and the Paleo-Pacific Ocean regimes. The Mo mineralization (167 Ma) is related...
The Cenozoic post collisional magmatism in NW Turkey produced several granitic emplacements during the Eocene and Late Oligocene-Early Miocene. Both Eocene and Late Oligocene-Early Miocene plutons are represented by high BaSr granitoids. We document here whole-rock chemical and Sr–Nd–Pb-O isotopic compositions of the Solarya plutonic association (SPA) with the age of 21 Ma (Lower Miocene) to evaluate...
Magmatic records with high Mg and low Y signatures provide important insights into the deep mantle dynamics that dictate the evolution of ancient orogenic belts. This paper reports the presence of felsic intrusive dikes with high Mg and low Y signatures intruding the Baingoin Batholith (central Tibet) at ca. 94 Ma. These dikes show adakitic signatures, including high Sr and low Y and Yb contents and...
The Lyangar W-Mo skarn deposit is situated in a metallogenic belt of W-Mo, Cu-Mo, W-Au, and Au deposits and is related to an Early Permian multiphase (monzodiorite)-granodiorite-granite-leucogranite pluton that was emplaced in a tectonic domain with possible ancient continental crust. The latter, coupled with an inferred ascent of hot asthenospheric material, has defined an enrichment in Mo and fluorine,...
An integrated petrological and geochemical study on plagioclase crystals erupted at Vulcano Island (Aeolian Islands, Southern Italy) over the past 1000 years allowed us to draw a detailed model of the internal structure of the volcanic system, in which modes of magma interaction and timescales of storage at crustal depth are shown. The integration of compositional, textural and temporal record preserved...
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