We conducted a vertical seismic profile (VSP) in the borehole of International Ocean Discovery Program/International Continental Scientific Drilling Program Expedition 364 Site M0077 to better understand nature reflectivity and situ properties associated with Chicxulub impact structure peak ring. Extraction up-going wavefield from VSP shows that strong reflection event imaged data results disco...

Mesozoic magmatic rocks are widespread in the Lhasa terrane, but most of them cretaceous age. Because Jurassic relatively rare and our knowledge on such earlier magmatism context tectonic setting evolution is limited. In this study, we focus mid-late granitoids that occur west central subterrane. We present results a systematic study these granitoid tonalite composition together with hosted maf...

The geological setting is dominated by Eocene (48.7 Ma) syncollisional granitoids in the form of a small pluton in the Motajica Mt. and in the form of numerous sills and dykes in the Prosara Mt. Microelement paragenesis of these magmatites, pegmatites, greisens and quartz veins are distinguished by U, Th, Ce, Y, P, Nb, Ta, B, Li, F, Be, Sn, Mo, W, Fe, Cu, Pb. These elements and 87Sr/86Sr and δ1...

The Neoproterozoic Nagarparkar Complex is characterized by isolated semicircular hillocks of outcrops of “withinplate” A-type peralkaline to peraluminous granites. Geochemically the granites/rhyolites of the Nagarparkar Complex are characterized by high SiO2, Na2O+K2O, K2O, Fe/Mg, Al2O3, Zr, Nb and Y and low CaO and Sr. Majority of samples show moderate iron enrichment. The rocks show the chara...

Abstract Granitoids are the main constituents of continental crust, and an understanding their petrogenesis is key to origin evolution continents. Whether crystal fractionation dominant way generate evolved magmas has long been debated, mostly because such processes would produce large volumes complementary cumulates, which remains elusive. Mafic magmatic enclaves (MMEs) ubiquitous in granitoid...