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西藏东部丁青蛇绿岩套层序齐全 ,深海沉积硅质岩中发现了晚三叠世放射虫 ,主要有 Capnuchosphaera the-loides,C.triassica,Xenorum flexum,Pseudostylosphaera gracilis,Veghicyclia austriaca,Perispongidiumtethyus,Spongostylus toltilis,S.carnicus,Annulotriassocampe sulovensis,Canoptum triassicum,Poulpus piabyx,X iphotheca karpenissionensis,Laxtorum(?) carnicum,Multimonilis pulcher,M.japonicus,Palaeosaturnalistrias-sicus,Pseudoheliodiscuslatus等 ,其时代为 Carnian期 ,表明丁青带三叠纪发育较成熟洋盆 ,为新特提斯演化提供了证据。
The sequence of Dingqing ophiolite in eastern Tibet is complete. Late Triassic radiolarians have been found in deep-sea sedimentary chert, mainly including Capnuchosphaera the-loides, C.triassica, Xenorum flexum, Pseudostylosphaera gracilis, Veghicyclia austriaca, Perispongidiumtethyus, Spongostylus toltilis, S.carnicus, Annulotriassocampe sulovensis, Canoptum triassicum, Poulpus piabyx, X iphotheca karpenissionensis, Laxtorum (?) carnicum, Multimonilis pulcher, M.japonicus, Palaeosaturnalistrias- sicus and Pseudoheliodiscuslatus, The Permian developed more mature oceanic basins, which provided evidence for the evolution of the Neo-Tethyan.