Abstract High-grade metamorphic rocks and crustal melts provide crucial evidence for growth differentiation of the continental crust, are widespread in collisional orogens. However, their importance evolution arcs remains poorly understood. Metamorphism related anatexis preserved margin Neo-Tethys ocean serves as a key natural laboratory to investigate this process. Along Neo-Tethyan arc margin...

In the Makran area, a wide accretionary wedge is originated by north-dipping subduction of Neo-Tethyan oceanic lithosphere. The rear represented North Domain that consists an imbricate stack tectonic units derived from closure basin. This basin opened southward Eurasia continental margin during Early Cretaceous. Bajgan Complex interpreted as Paleozoic or older metamorphic basement representing ...

Article history: Received 28 April 2011 Received in revised form 5 August 2011 Accepted 12 August 2011 Available online xxxx

Abstract Orthophragmines are a group of discoidal, lenticular or stellate ‘orbitoidal’ larger benthic foraminifera that thrived in shallow-marine environments low-to-middle latitudes during the late Paleocene and Eocene. They consist two phylogenetically independent families with similar morphology, such as Discocyclinidae (with Tethyan genera— Discocyclina Nemkovella ) Orbitoclypeidae three Or...

The Middle East region represents a key site within the Tethyan domain where continental break-up, collision, backarc extension and escape tectonics are kinematically linked together. We perform global mantle circulation computations to test the role of slab pull and mantle upwellings as driving forces for the kinematics of the Arabia–Anatolia–Aegean (AAA) system, evaluating different boundary ...

Demingding is a promising porphyry Mo-dominated deposit recently discovered in the eastern Gangdese metallogenic belt Tibet, China. We present zircon U-Pb-Lu-Hf isotopic studies, as well geochemical data of late monzogranites and prior rhyolites from to uncover their origin geodynamic mechanism. Zircon U–Pb dating yielded precise crystallization ages 17.3 ± 0.6 Ma (MSWD = 2.5) 186.5 3.0 2.0) fo...

• The gabbro was originated from metasomatized lithospheric mantle. hornblende formed mixing of asthenosphere and slab breakoff propagated eastward under the Lhasa terrane in Paleocene-Eocene. Past geodynamic events can be reconstructed using spatial temporal patterns geochemical variability igneous rocks. Here we apply this principle to define timing geometry Neo-Tethyan after India-Asia colli...