the eocene volcanic rocks from the southwest of the jandaq (kuh-e-godar-e-siah, central-east iran micro-continent) are andesitic basalt and andesite in composition. these rocks contain xenoliths with granulitic mineralogy. mineral assemblage of these xenoliths is plagioclase + phlogopite + corundum + sillimanite + chlorite + phengite with granublastic, poiklioblastic and foliated textures in th...

Among the supercrustal formations of Ingul megablock, Paleoproterozoic rocks, represented by Ingul-Ingul series, are significantly predominant. In general, composition Ingul-Ingulets series includes (from bottom to top): Zelenorichen, Artemiv, Rodioniv, Kamyano-Kostovatsky (age analogue Spasivsk) and Roschakhiv Chechelivsk) worlds. The Chechelivsk suite is biotite garnet-biotite gneisses, place...

Paleocene plutons on Kodiak Island, in Alaska, contain host-rock xenoliths that have undergone varying degrees of fragmentation, metamorphism and assimilation in the surrounding granitoid rocks, and therefore provide an excellent natural laboratory to study the processes of xenolith fragmentation and magma contamination. Kodiak Island has two belts of Paleocene plutons: the Kodiak batholith tha...

The eclogite facies assemblage K-feldspar–jadeite–quartz in metagranites and metapelites from the SesiaLanzo Zone (Western Alps, Italy) records the equilibration pressure by dilution of the reaction jadeite+quartz=albite. The metapelites show partial transformation from a pre-Alpine assemblage of garnet (Alm63Prp26Grs10)–K-feldspar–plagioclase–biotite±sillimanite to the Eo-Alpine high-pressure ...

Abstract Pelites (shales and mudstones) are arguably the most important rock type for interpreting metamorphism. Their significance derives from their widespread occurrence range of mineral assemblages they develop at different conditions pressure temperature. We compiled a global database 5729 major-element whole-rock analyses pelites metamorphic grades to granulite-facies paragneisses) (1) de...

Abstract Studies done on small tropical west-flowing river catchments located in the Western Ghats southwestern India have suggested very intense chemical weathering rates and associated CO 2 consumption. Very less studies are reported from these notwithstanding their importance as potential sinks of atmospheric at global scale. A total 156 samples were collected a catchment India, Payaswini–Ch...