Evaporitic Rock's Characteristics Of The Paleogene-Neogene In Kuqa Basin And Its Relations With The Palaeo-environment

Kuqa Basin is located in the south of Tianye foothills in Xinjiang, the south by the Tarim River as the border, and west Wushi County in Turpan Tunguska River Korla counties east near Kurgan Chu, to collapse eight counties, covering a total area of 50,000 square kilometers.This article analyzes evaporated rock's series characteristics, and its relations with the palaeo-climate in the widespread data collection, in the massive analyses foundation, from evaporated rock series geological characteristic, evaporates rock series sedimentology characteristic, evaporates rock series geochemistry characteristic, evaporates aspect and so on rock series mineralogy and petrology characteristic, thus analyzed the palaeo-climatology evolution which this area the ancient near discipline and recently recorded, reappeared then ancient geographical environment, thus provided the reliable geological foundation for this area petroleum and the salts exploration.By 90 days of field geological survey of 11 evaporites is the profile measurement, analysis, and drilling cuttings analysis, the formation of the six rhythmic pattern; Pass the salt salt dome, Joel Wo salt dome, Dawanqi salt dome, salt dome saltworks Baicheng six salt dome evaluations, to show good salt dome formation launched a profile measurement, analysis.Profile of field measurements collected 382 samples of the stratigraphic profile of sulfur isotope analysis and geochemical analysis, Sulfur isotope analysis of Kuqa Basin Paleogene and Neogene evolution of sedimentary environments and stratigraphic division provides accurate gauge; Formation geochemical study Initial Kuqa basin reveals the Paleogene and Neogene evolution of sedimentary environments evaporation and biological productivity features. Dina 361 cuttings of the 102 wells and 203 wells has been the geochemical analysis, reflect ancient salt lake in a slight dilution process.Based on the Kuqa Basin Paleogene and Neogene in the evaporites features, it could be palaeogeographic changes divided into three stages : Block is the firstGulf-stage lagoon; The second is associated with the water of the lake and a Salt Lake stage. The third is the inland salt lake stage.Kuqa basin have wide thick rock salt, potassium can be as into the material foundation; The water-based material sources is the potassium into the basic conditions; with ancient climate and ancient environment more suitable, Department often is a large potash deposits existed before landing site, it is possible to find potash deposit. This paper summarizes the Kuqa Basin evaporites is the salt formation and distribution of the law, said the Kuqa Basin find salt, Prospecting the direction of Kuqa Basin evaporites the further research is important.