Sedimentary Environment Analysis And Provenance Analysis Of Tectonic Setting Of Qiati’er Group Of The Upper Carboniferous In The Tianshuihai-Maza Block, Western Kunlun

Research area on the Northwestern margin of the Qinghai-Tibet plateau, occupying the middle part of West Kunlun mountains and the Karakoram, West of pamiershan. Tectonic attribution in the tianshuihai-mazha area, Western Kunlun, this select group for the study of upper carboniferous in Tyre, by analyzing the cross section characteristics, Petrology and geochemical analysis, tyre and provenance of sedimentary tectonic background, commissioned a detailed study on the sedimentary environment. Explore the tianshuihai-mazha area, West Kunlun tectonic-sedimentary evolution of the late Carboniferous, scientific questions.Research results show that tyre group can be divided into A formation and B formation, A formation primarily for the bottom clip gray, light gray limestone Siltstone, Slate, lower-grey-dark gray thick-bedded conglomerates, grey limestone gravel composition, see small amounts of dark grey sandstone, grey quartz sandstone, gravel orientation. Central grey-dark gray and thin-layered metamorphic sandstone in thin layer of dark grey slate, local-thick-bedded conglomerates in grey, light grey, dark grey and thin-layer rock quartz sandstone, and upper primary to gray green fine quartz sandstone, mudstone and sandstone, greyish-green metamorphosed sandstone, clip a small amount of slate. B formation is a grey, light grey, grey white thin-thick layer of fine-particle feldspar quartz sand, quartz sand, and fine particle pyrite-bearing metamorphic (coarse grained) quartz sandstone, clip gray, dark gray or grayish-green thin-thick layered metamorphic sandstone layered slate. Base layer sequence, Petrology, sedimentary structures and judgement, study A formation of tyre development a subaqueous fan may be one step closer to inner fans, middle-fan, outer fan. The deltat system which is developed in B formation, which is one step into the Delta Plains, Delta front, Prodelta. Dickinson Delta graphic method to vote results of tyre group sandstone, vote majority falling into the cycle of the tectonic setting of orogenic belt region, few falling into the mixed zone area. Poor separation of the observation on combined with thin sandstone, rounded edges-edge shape, composition maturity is not high, notes Chuck tyre base in the near-source area of deposition. While using combination of element geochemical data analysis on tectonic setting discrimination of Bhatia storyboard, group A formation close to the mainland island of tyre, tyre B formation data closer to the Group of oceanic island arc tectonic setting, with SiO2(K2O/Na2O) relationship illustrated in the samples reflect the constructs in the active continental margin environment in General.In combination with the regional tectonic setting, finds the source area for non-stable block.As seen sweet water sea-Ma tie plots in research district overall deposition environment for sea land transition phase-Delta phase and has gravity flow features of water Xia fan phase, property source district of constructed background for Earth constructed background for again cycles made mountain with, Earth constructed environment belonging to oceanic island arc and continent island arc environment, and has activities continent edge of features, description mother Rock District experience has dive suture to made mountain of process.