The Triassic of China can be subdivided into six regions, namely, the cool temperate North Asia (scarce deposits) and Boreal Sea (no definite deposits), the warm temperate Central Asia (terrestrial) and NW Pacific (marine), the tropical Cathayian Tethys, the warm temperatetropical Gondwanan Tethys (the Himalayas and Yarlung Zangbo belt). The Cathaysian Tethys is further subdivided into Tibet-Qinghai and South China subregions, in which Triassic deposits are the best exposed and investigated. Stratigraphic sequences of representative areas are indicated, and summarized into synthetic chart with different fossil zonations. Correlation with adjacent areas is briefly discussed. Triassic strata constitute a 2 "d order sequence set with a remarkable two-fold character (four 2 nd order sequences) and twelve 3 rd order sequences. Influence of the Indosinian Orogeny on the Triassic sequences and their distribution is emphasized.

The Triassic of China and its interregional correlation

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