THE DISCOVERY OF EARLY PERMIAN REEF BELT IN EAST KUNLUN AND ITS SIGNIFICANCE

The early permian reef belt is distributed in the southern side of eas tern Kunlun, north area of Qinghai-Tiber Plateau. The core-reef facies of the reef extends from Tuosuo Lake to Huashixia. Lots of reef brecc ia was found at the southern slope of the core-reef bell, and to the n orth of the reef belt there is hack-reef limestone. Cacisponges, hydro zoa, bryozoa, Tabulozoa, Tubiphytes and red algae are the main frame-b uilding organisms. Archaeolithoporella, laminated blue-green algaes, T abulozoa and Tubiphytes played a role of binding or encrustating. Ther e are many kinds of epibiont in the reef, including brachiopod, gaster opod, foraminifera, echinoderm and simple coral. The type and the char acteristics of the reef-building organisms in eastern Kunlun and Anima qing are basically the same as those in the south of China.