摘要
黄沙河地区位于新疆东昆仑西段南缘,属于昆南增生杂岩带,研究区内出露大面积下石炭统托库孜达坂组,为了厘定区内托库孜达坂组时代并对其沉积环境进行分析,本文在详细的野外地质调查基础上,通过地层层序学、岩石学及古生物学研究,将新疆东昆仑西段黄沙河地区托库孜达坂组分为下段碎屑岩段和上段碳酸盐岩段,将其时代厘定为早石炭世,结合区内碎屑岩粒度特征及放射虫化石特征,确定该套地层的沉积环境为半深海-滨浅海环境。
Huangshahe area is located in southern margin in west section of eastern Kunlun in Xinjiang Uygur Autonomous Region.It belongs to Kunnan accretionary complex belt.A large area of lower Carboniferous Tokuzi Daban formation(C_(1)tk)is exposed in the study area.In order to determine stratigraphic age of Tokuzi Daban formation in the area,sedimentary environment has been analyzed.Based on detailed field geological investigation,through stratigraphic sequence,petrology and paleontology,the Tokuzi Daban formation in Huangshahe area in the west section of east Kunlun in Xinjiang Uygur Autonomous Regionis has been divided into the lower clastic rock section and the upper carbonate rock section.Its age is determined as the early Carboniferous.Combining with the grain size characteristics of clastic rocks and the characteristics of radiolarian fossils,it is determined that the sedimentary environment of this set of strata is semi deepcoastal shallow sea environment.
作者
刘欢
王海波
鲁浩
王超
万鹏
LIU Huan;WANG Haibo;LU Hao;WANG Chao;WAN Peng(No.3 Exploration Institute of Geology and Mineral Resources, Shandong Yantai 264004, China)
出处
《山东国土资源》
2022年第5期1-7,共7页
Shandong Land and Resources
基金
新疆地勘基金中心“新疆若羌县大沙沟一带1∶5万五幅区域地质矿产调查项目(编号:XBDK2015105)
新疆东昆仑三岔顶一带1∶5万四幅区域地质矿产调查项目(编号:K161LQ22)
新疆东昆仑且地塔格西一带1∶5万四幅区域地质矿产调查项目(编号:K161LQ17)”的成果。
关键词
托库孜达坂组
古生物学特征
粒度特征
地质特征
东昆仑
沉积环境
Tokuzdaban formation
Paleontological characteristics
grain size characteristics
geological characteristics
eastern Kunlun
sedimentary environment
