The Kamieniec Metamorphic Belt belongs to the Variscan of Europe as NE part Bohemian Massif. It comprises a supracrustal succession dominated by micaschists that has not been yet recognized high-P, low-T (HP–LT) metamorphic unit. Our work demonstrates significance metapelites in study HP metamorphism To reconstruct P–T history Belt, we have investigated three samples using independent geothermo...

The Cordillera Real granitoids are a suite of Triassic and Oligocene plutons in the core Eastern Central Andes Bolivia. Their tectonic setting, chemical ore compositions make them part so-called “Inner Magmatic Arc”, which differs from current “Magmatic Arc” located immediately to west. U-Pb SHRIMP data were obtained order constrain crystallization ages. group yielded following results: 239±2 M...

The ca. 280 Ma, postorogenic, S-type Dartmoor pluton was assembled from numerous sheets of granitic magma, emplaced into the shallow crust. main magma source lies in middle crust and is most probably Proterozoic metagreywackes, with minor metapelites metavolcanic or plutonic rocks, possibly formed a syncollisional environment. Partial melting this may have occurred under fluid-deficient conditi...

Chloritoid and kyanite coexist in metapelites from the high-pressure/low-temperature Massa Unit Alpi Apuane metamorphic complex (Northern Apennines, Italy). The composition of chloritoid is extremely variable throughout Unit. Fe-chloritoid occurs association with hematite-free, graphite-bearing schists, whereas strongly zoned Fe-Mg found hematite kyanite. We investigated effect different bulk F...

The oldest remnants of life on Earth from various localities in the Isua supracrustal belt Greenland date back to >3.7 billion years ago (Ga). They are form graphite, whose biogenicity is controversial. Previous studies used presence and isotopic composition nitrogen graphite along argue both for against biogenicity. To determine if chemistry can indeed serve as a biosignature, we investigated ...

Abstract. The denudation of rocks in mountain belts exposes a range fresh minerals to the surface Earth that are chemically weathered by acidic and oxygenated fluids. impact resulting coupling between weathering rates fundamentally depends on types weathering. Whereas silicate sequesters CO2, combination sulfide oxidation carbonate dissolution emits CO2 atmosphere. Here, we combine concentratio...

Cerro El Toro, a Pliocene scoria cone that carried abundant lower crust xenoliths to the surface, is located in Mesa Central (MC), Mexico, where mafic alkalic intra-plate volcanism has occurred since early Miocene (end of Sierra Madre Occidental volcanism). Early studies Toro showed feldspathic granulite equilibrated at P = 0.9–1.4 GPa and T 900−1100°C under anhydrous conditions (ternary feldsp...

In orogens, pinpointing the timing of mineralization is often complex due to superimposition magmatic, metamorphic and tectonic events. Unravelling tectono-metamorphic evolution deformed terranes essential for understanding formation orogenic mineralization. Bossòst dome Pyrenean Axial Zone, undated stratabound Pb-Zn previously considered be SEDEX-like devoid evidence significant remobilization...