Relationship between the Tianshan Mountains Uplift and Depositional Environment Evolution of the Basins in Mesozoic-Cenozoic

Key words: 
• Tianshan mountains uplift /
• Mesozoic-Cenozoic /
• Xinjiang area /
• depositional environment /
• reservoir and hydrocarbon source rock

Abstract: Clearing the relationship among since Mesozoic Tianshan uplift of time sequence, scope, and north and south on both sides of the basin sedimentary evolution, which shows on both sides of Tianshan mountain, Tuha Basin in Junggar Basin and Tarim Basin has important demand to recovery basin protoeype. Through the analysis of a large number of previous apatite fission track dating data, quantitative calculation of gravel transport distance and provenance, the nature of the basin, depositional filling and palaeoclimate changing and the ancient flow, it is believed that of there are four periods of stage uplift of Miocene to Quaternary. They are Late Triassic to Early Jurassic, Late Jurassic - Early Cretaceous and Late Cretaceous to Eocene. The uplift range are two small and two large ones. On the analysis of the Tianshan mountains north and south on both sides of the basin on the basis of lithologic, stratigraphic and sedimentary characteristics, combination of Tianshan uplift mountain range and time, compiled the Early Jurassic to the early - to the south of Tianshan uplift area and its quaternary sedimentary facies evolution, it is considered that Tianshan uplift controlled the four phases of the unified by the early and Middle Jurassic in northern and southern Xinjiang Basin flood lake basin to the Late Jurassic and Early Cretaceous basin began to differentiation, to thoroughly split into independent sedimentary evolution of the basin since Neogene. At the same time, it is clear about the Tianshan mountains between the north and the south on both sides of the basin, hydrocarbon source rocks, reservoir and cap rock important formation to the Tianshan uplift. The understanding of clear and distribution of hydrocarbon source rock, reservoir rock development period is of great significance, also some enlightenment to effectively expanding the scope of oil and gas exploration.