【摘要】 通过沉积学、岩石学和大地构造学等研究方法,对胜金口组地层特征、沉积环境演化以及发展提出了新的认识。选取新疆昌吉地区白垩系胜金口组典型剖面,在路线地质调查和野外剖面实测的基础上,结合粒度分析与室内岩矿鉴定等方法对胜金口组的地层特征和沉积环境进行分析。综合分析表明:白垩系胜金口组沉积环境为准噶尔盆地南缘北天山山前坳陷,胜金口组沉积物随准噶尔盆地的沉降发生变化,沉积环境由底部至顶部划分为滩坝、砂泥混合滩和泥滩。该研究对准噶尔盆地耦合系统在白垩纪演化发展具有重要意义。更多还原

【Abstract】 In this paper, the sedimentary characteristics, environment and evolution of Shengjinkou Formation are studied by means of sedimentary petrology, petrography and geotectonics. Based on the field reconnaissance and proffile measurement, the sedimentary characteristics of the Cretaceous Shengjinkou Formation in Changji, Xinjiang are studied,by slice observation and grain size analysis methods to restore the sedimentary environment. There are three different sedimentary sequences in the Shengjinkou Formation. On the whole, the sedimentary environment of Shengjinkou Formation is located in the North Tianshan Piedmont Depression in the southern margin of the Junggar Basin. The sediments of the Shengjinkou Formation changed with the subsidence of the Junggar Basin, and the sedimentary environment was divided into beach dams, sand-mud mixed beaches, and mudflats from bottom to top.the results has an important implications for the study of the Cretaceous sedimentary environment evolution in the Basin mountain coupling system of Junggar.更多还原