Tectonic Framework and Sedimentary Feature of the Tarim Basin in Paleozoic
Between Tianshan and kunlun Aerjin Mountains lies Tarim Basin,the largest sedimentary basin in china. The basin has undergone the formation of basement during pre Sinian and development since Phanerozoic and it is a giant complex basin with the histry of a Paleozoic original craton basin overlain by a Mesozoic Cenozoic foreland basin. The craton basin had been subjected to a rift in Sinian,a marginal aulacogen in Cambrian Ordovician and an intracratonic depression basin in Silurian Permian. The Paleozoic Erachem is mainly a set of carbonate rocks and clastic rocks of marine facies and the sedimentary and depressing centers experienced several times of shifting during Paleozoic. The Louer Paleozoic is thicker in the east than in the west and the Upper Paleozoic is thinner in the east than in the west. All resulted from the control of the plate evolution and tectonic framework in Paleozoic.