In this study the formation of polygenetic High Tatra granitoid magma is discussed. Felsic and mafic mixing mingling processes occurred in all batches composing pluton are documented by typical textural assemblages, which include: microgranular enclaves (MME), clots, felsic quartz-plagioclase-titanite ocelli, biotite-quartz poikilitic plagioclase crystals, chemically zoned K-feldspar phenocryst...

Studies of melt inclusions trapped in magmatic phenocrysts can provide a new perspective on several key outstanding problems in the understanding of the genesis of orthomagmatic ore deposits, particularly with respect to the concentration of metals in parental magmas. The published data shows a mismatch between low and high abundances of Cu (and Ag) in unheated and remelted melt inclusions, res...

During the end-Permian extinction, a substantial amount of methane (CH 4 ) was likely released into ocean-atmosphere system associated with Siberian Traps volcanism, although fluctuations in global CH cycle aftermath extinction remain poorly understood. The carbon (C) isotopic composition carbonate (? 13 C carb across Permian-Triassic boundary (P-TB) analyzed at Chaotian, South China. ? values ...

Ejecta from impact craters on Venus are a major source of fine-grained materials across the planet, and crater spatial distribution has been studied as a guide to the relative age and resurfacing rates of large regions. Of particular interest is the potential intersection of distal crater deposits and tesserae, highly deformed landforms that may be the oldest materials on Venus. The composition...

Nanometric solid inclusions in diamond incorporated in garnet and zircon from felsic gneiss of the Kokchetav massif, Kazakhstan, have been examined utilizing electron microscopy and focused ion beam techniques. Host garnet and zircon contain numerous pockets of multiple inclusions, which consist of 1–3 diamond crystals intergrown with quartz, phengite, phlogopite, albite, K-feldspar, rutile, ap...

Abstract The mechanical properties of the deep rock are impacted not only by complicated stress environment but also mineral composition. To reveal relationship between development characteristics and acoustic emission signals in evolution rocks, metagabbros with different feldspar were subjected to tests under hydraulic coupling. characteristic parameter their correlation investigated. results...

The accessory mineral assemblage (AMA) of igneous cumulate xenoliths in volcanoclastic deposits and lava flows the Carpathian back-arc basin testifies to composition intrusive complexes sampled by Upper Miocene-Pliocene basalt volcanoes. magmatic reservoir beneath Pinciná maar is composed gabbro, moderately alkalic alkali-calcic syenite, calcic orthopyroxene granite (pincinite). complex wider a...

The continental crust in the overriding plate of India-Asia collision zone southern Tibet is characterized by an overthickened layer felsic composition with underlying granulite-eclogite layer. A large data set indicates that this experienced magmatism from 245 to 10 Ma, as recorded Gangdese Batholith. Magmatism was punctuated flare-ups at 185−170, 90−75, and 55−45 Ma caused a combination exter...

Findings of coesite and microdiamond in metamorphic rocks of supracrustal protolith led to the recognition of continental subduction to mantle depths. The crust-mantle interaction is expected to take place during subduction of the continental crust beneath the subcontinental lithospheric mantle wedge. This is recorded by postcollisional mafic igneous rocks in the Dabie-Sulu orogenic belt and it...