新疆昌吉地区胜金口组的地层特征及沉积环境分析  

Stratigraphic Characteristics and Sedimentary Environment of the Shengjinkou Formation of the Changji area,Xinjiang

作　　者：赵雨豪 刘云华[1] 邵铁全[1] 范媛媛 高景晖 张云飞 Zhao Yu-hao;Liu Yun-hua;Shao Tie-quan;Fan Yuan-yuan;Gao Jing-hui;Zhang Yun-fei(College of Earth Sciences and Resources,Chang'an University,Xi'an 710054,China)

机构地区：[1]长安大学地球科学与资源学院,西安710054

出　　处：《西部资源》2020年第5期1-5,共5页Western Resources

基　　金：东天山昌吉—双沟山地区区域地质调查—天山昌吉地区K45E001012等六幅1∶5万区域地质调查(0617-1911FZ0443)。

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。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.

关 键 词：准噶尔盆地 胜金口组 湖泊相 沉积环境 

分 类 号：P618.13[天文地球—矿床学]