新疆温泉县哈日陶勒哈一带东图津河组物源及沉积环境分析

Analysis of Provenance and Depositional Environment of Dongtujinhe Formation in Haritaoleha Area,Wenquan County,Xinjiang

西天山温泉地区广泛发育泥盆纪—石炭纪火山沉积地层,新疆温泉县阿依尔朔克一带东图津河组以灰岩、钙质长石岩屑砂岩、砾岩为特征,沉积岩石的碎屑物主要来源于未切割的火山岛弧,部分来源于岛弧过渡带。通过野外详细的剖面测制、沉积环境的分析,结合室内岩矿鉴定对东图津河组的沉积环境及其物源特点进行了综合分析,研究结果表明,上石炭统东图津河组为滨浅海相,东图津河组沉积初期,水体较深,水动力弱,沉积环境为静态的浅海环境,随着海水变浅,水动力加强,沉积环境变为动荡的滨浅海环境。

Devonian-carboniferous volcanic sedimentary strata are widely developed in the hot spring area of west Mount Tianshan, the Dongtujinhe formation in Ayershuke area, Wenquan County, Xinjiang, is characterized by limestone, calcareous feldspar lithic sandstone and conglomerate, the detritus of sedimentary rocks are mainly derived from uncut volcanic island arc and partly from island arc transition zone.The sedimentary environment and provenance characteristics of the Dongtujinhe formation are comprehensively analyzed based on indoor rock and mineral identification by detailed profile measurement in the field and the analysis of sedimentary environment, the results of the research show that the Upper Carboniferous Dongtujinhe Formation is littoral-neritic facies.In the early sedimentation of Dongtujinhe Formation, the water body was deep and the hydrodynamic force was weak, and the sedimentary environment was static shallow sea environment.As the seawater became shallower, it became more hydrodynamic, the sedimentary environment becomes a turbulent coastal and shallow sea environment.