塔里木盆地小海子剖面沉积特征及演化  

Sedimentary Characteristics and Evolution of the Xiaohaizi Section in Tarim Basin

作　　者：郭春涛 陈继福 GUO Chun-tao;CHEN Ji-fu(Department of Geological and Environmental Engineering,Shanxi Institute of Technology,Yangquan 045000,China;College of Architecture and Surveying Engineering,Shanxi Datong University,Datong 037003,China)

机构地区：[1]山西工程技术学院地质与环境工程系,阳泉045000 [2]山西大同大学建筑与测绘工程学院,大同037003

出　　处：《科学技术与工程》2021年第3期979-985,共7页Science Technology and Engineering

基　　金：国家自然科学基金青年科学基金(41802171)。

摘　　要：塔里木盆地巴楚地区小海子剖面是盆地石炭系出露最全最好的地区,对该剖面的研究将有助于解析该套地层。根据野外观察、室内分析,认为小海子剖面上泥盆统-石炭系主要为一套浅海相沉积体,下部主要发育浪控碎屑滨岸,中部为开阔台地、潟湖、局限台地等混积环境,上部为一套厚层的蒸发台地环境膏岩,顶部则呈现出混积的局限台地特征。结合盆地地层展布和构造演化,认为小海子剖面上泥盆系-上石炭统沉积自下而上可分为碎屑岩、混积、膏岩、混积四个演化阶段。The Xiaohaizi Section in Bachu County Area of Tarim Basin is one of the most complete and best exposed areas of Carboniferous in the basin,thus,the study of this section will help to understand this stratum.According to field observation and analysis,it was considered that the Upper Devonian-Carboniferous of Xiaohaizi Section was mainly a set of shallow sea facies sedimentary bodies.The lower part was mainly developed with wave-controlled clastic shore deposits.The middle part was dominated by open platform,lagoon and restricted platform environment.The upper part was mainly composed of thick-bedded of evaporation platform gypsum.And the top part showed the restricted platform characteristics of mixed carbonate and siliciclastic sediments.Combined with the stratigraphic distribution and tectonic evolution of the basin,it was considered that the Upper Devonian-Carboniferous sediments in the Xiaohaizi Section can be divided into four stages from bottom to top.Those four stages were clastic rock,mixed deposit,gypsum rock and mixed deposit.

关 键 词：小海子剖面 沉积特征 滨岸 台地 沉积演化 

分 类 号：TE122[石油与天然气工程—油气勘探] P534[天文地球—古生物学与地层学]