Bivalves are the most common macrofauna present in marine sequences spanning the end-Triassic mass extinction and document the initial ecological response to the crisis. In the west-Tethyan Kössen Basin, marine bivalves occur within distinctive low diversity episodic shell beds at the time of initial crisis and d13C minimum, and continue for 1 m (,,20 kyr) upward into the peak extinction phase ...

the noorabad-kermanshah ophiolite is part of eastern mediterranean-zagros-oman tethyan ophiolites, that this area is located in south-southwest of the main zagros thrust fault. this ophiolite consists of peridotites, serpentinites and pegmatite gabbros as mantle sequence whereas crustal sequences are composed of locally layered gabbros, isotropic gabbros, sheeted dike complex, basaltic to andes...

[1] Uppermost Cretaceous to Eocene marine sedimentary sequences occur both to the south and north of the Yarlung Zangbo suture in south central Tibet. They consist of Indian-margin strata of the northern Tethyan Himalaya and Asian-margin strata of the Gangdese forearc. Both assemblages are characterized by major changes in depositional environment and sedimentary provenance at 65 Ma and an appe...

Late Paleozoic–early Mesozoic intrusive rocks are distributed widely along the northern margin of Qaidam Basin in Tibetan Plateau. To constrain tectonic evolution, we carried out petrological, chronological, and geochemical studies Chahannuo gabbros. LA-ICP-MS Zircon U–Pb dating yields an age 255.0 ± 0.9 Ma for gabbros, which confirms existence Indosinian tectono-magmatic activity on Basin. The...

A rich poriferan assemblage was identified within the easternmost part of Getic Carbonate Platform Romania (Grădiștei Gorges). The excellent preservation state most poriferans here led to discovery a new species (Neuropora gigantea Pleș & Schlagintweit, n. sp.) and identification previously unknown diagnostic features in some (Sarsteinia babai Schlagintweit Gawlick, 2006 emend., Neuropora l...

Lower Cretaceous carbonate successions outcrop extensively along the northern Tethyan margin in Kopet-Dagh (NE Iran) and Yazd Block (Central Iran). These units are not well constraint terms of stratigraphic, sedimentological, geochemical, paleobiogeographic view point. To improve our knowledge, a detailed multidisciplinary study has been presented on two roughly coeval stratigraphic different a...