Sediment relamination in subduction zones is posited to be important for the compositional evolution, physical structure and material recycling of Earth. Despite support from numerical experimental modeling geophysical observation, magmatic evidence rare difficult identify ancient modern convergent systems. Here we report newly identified ca.32–27 Ma adakite-like granites with high δ18O values ...

tertiary intrusive granitoids within the lut block in the khorasan razavi and south khorasan provinces are mainly sub-volcanic with porphyry texture and their composition varies from granite to diorite but monzonite is dominant. with the exception of hired, these are classified as belonging to the magnetite-series of i-type granitoids. chemically, these rocks are meta-aluminous. those with mine...

The Central Asian Orogenic Belt (CAOB) is the world’s largest accretionary orogenic belt, and its formation related to closure of Paleo-Asian Ocean (PAO). However, time style PAO remain controversial. To address these issues, this paper presents zircon U-Pb dating, whole-rock geochemistry Lu-Hf isotope analyses volcanic rocks in Faku-Kaiyuan area on northern margin North China Craton. results s...

We report herein on new zircon U–Pb ages, the major and trace elements of whole-rock, Sr–Nd–Hf isotope composition for adakitic intrusives collected from West Ujimqin district in Southeast region Central Asian Orogenic Belt (CAOB). These data provide important constraints petrogenetic evolution geodynamic setting late Permian magmatism CAOB. The dating shows that ages Seerbeng pluton Nuhetingsh...

The Clarke River Fault in northeast Queensland records an early Paleozoic history of subduction, accretion and continental suturing. Samples mafic–ultramafic rocks collected proximal to the record oceanic geochemical affinities comprise alteration assemblages consistent with ophiolitic origin. ca 456 Ma Falls Creek Tonalite a continental-arc signature was formed response long-lived subduction b...