THE DISCOVERY OF THE LATE TRIASSIC STRATA AND ITS GEOLOGICAL SIGNIFICANCE IN THE SOUTHWESTERN TARIM BASIN

The first discovered Late Triassic strata was introduced in terms of its petrological and biostratigraphic characters in the paper.The upper Triassic was only distributed in Wuqia-Kusilapu fault depression,which was belonged to a different protobasin comparing with the southwestern foreland basin.This is important for analysis of structural evolution and evaluation of hydrocarbon potential in the southwes tern Tarim depression.