首次于壤塘县曼迪乡上三叠统侏倭组的滑塌堆积层中，采获异地埋葬珊瑚群化石，建立三叠纪双壳类两个生物带；
The allopatric coral fossils are collected in the olistostromes of the Upper Triassic Zhuwo Formation in Mandi, Zamtang, and two biozones of Triassic bivalves are established.
上三叠统—下侏罗统有海相地层(浅海海湾相或海陆交互相碎屑岩)分布，而中、上侏罗统及白垩系为陆相地层。
During Late Triassic to Early Jurassic, Marine sediments formed (sallow_bay facies or alternating continent_marine facies), and only continental facies deposited during Middle Jurassic to Cretaceous.
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