Lithium concentrations and isotopic compositions in the country rocks (amphibolites and schists) of the Tin Mountain pegmatite show systematic changes with distance to the contact. Both Li and δLi decrease dramatically along a ∼10m traverse from the pegmatite into amphibolite, with Li concentration decreasing from 471 to 68ppm and δLi decreasing from +7.6 to −19.9. Rubidium and Cs also decrease...

the protoliths of metamorphosed argillaceous rocks from the garmichay area in the east azerbaijan province of nw iran were clay-rich sediments of reworked nature, originating most likely from an andesite to andesite-basalt source and deposited in an active continental margin tectonic setting. the protoliths of the garmichay metapelites experienced low to moderate chemical weathering. andalusite...

the bundelkhand-aravalli craton is the most important lithotectonic unit in the central and western india where paleoproterozoic aravalli supracrustal sequence has been deposited over an archaean basement, the latter also known as the banded gneiss complex (bgc). a ne-trending linear metasedimentary sequence, designated as the jahazpur belt occurs along the eastern fringe of the aravalli superg...

Molybdenum isotopes have emerged as novel tracers for high-temperature igneous and metamorphic processes. The debate remains to what extent different subducted slab lithologies, such oceanic crust marine sediments, contribute the Mo isotope signature of arc magmas and, hence, exert controls on terrestrial cycle. Here we investigate systematics from input output at Tongan subduction zone: Arc la...

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...

Abstract Three distinct paragenetic and compositional types of tourmaline were described from the Velence Granite surrounding contact slate. Rare, pitch-black, disseminated I (intragranitic tourmaline) occurs in granite, pegmatite, aplite; very rare, black to greenish-gray, euhedral II (miarolitic miarolitic cavities pegmatites; abundant, gray, brown yellow or even colorless, acicular III (meta...

a r t i c l e i n f o a b s t r a c t Abstract interpretation Program semantics Metamorphic malware detection Self-modifying programs Metamorphic code includes self-modifying semantics-preserving transformations to exploit code diversification. The impact of metamorphism is growing in security and code protection technologies, both for preventing malicious host attacks, e.g., in software divers...