Kashmar granitoids of Taknar zone, in north part of Lut block, intruded into volcanic rocks and consist of granites, granodiorites, monzodiorite and gabbrodiorites. They are composed of mainly plagioclase, alkali-feldspar, quartz, amphibole, biotite and pyroxene minerals. Harker diagram variation, including negative correlations CaO, MgO, FeO, TiO2 and V and positive correlations K2O, Rb, Ba, a...

introduction the generation and evolution of granitic magmas has been a hot debated subject among petrologists. the diversity of their origin has led different authors to propose that these rocks are not simple in their origin and might be generated in more ways than one. in the past several decades, many petrologists used a variety characteristics to subdivide the granitoid rocks. such proposa...

Introduction: To provide constraints on the Triassic tectonic setting of Eastern Tianshan, an integrated study was conducted geochronological and geochemical data for granodiorites, monzogranites, two-mica granites from Yamansu area northern margin Central NW China. Geochronlogy Method Results: Zircon U–Pb dating indicated crystallization ages ca. 250–241 Ma. Geochemistry The granodiorites (ca....

Abstract Geological investigations of a part the crystalline basement in Baltic Sea have been performed on drill core collected from depth 1092–1093 m beneath Phanerozoic sedimentary cover offshore Latvian/Lithuanian border. The sample was analyzed for geochemistry and dated with SIMS U–Pb zircon method. Inherited cores this migmatized granodioritic orthogneiss an age 1854 ± 15 Ma. Its chemical...

the dehno granite massive is located in the east dehno village and southern khomein city and within themetamorphic sanandaj–sirjan zone. the composition of these rocks include: granodiorite, quartzdiorite(tonalite), monzogranite and leucogranite. quartz, alkali feldspar, plagioclase, biotite, andalusite, hornblendemuscovite, tourmaline, zircon and apatite are examples of the existing major and ...