松辽盆地西部斜坡区套保—平安镇地区青三段沉积特征  

Sedimentary characteristics of the 3rd Member of Qingshankou Formation in Taobao-Ping anzhen region,western slope area,Songliao Basin

作　　者：李佳桐 单玄龙[1] 赵容生 徐川[1] 白晓晗 沈梦蓉 LI Jia-tong;SHAN Xuan-long;ZHAO Rong-sheng;XU Chuan;BAI Xiao-han;SHEN Meng-rong(College of Earth Sciences,Jilin University,Changchun 130061,China)

机构地区：[1]吉林大学地球科学学院,长春130061

出　　处：《世界地质》2021年第1期93-99,共7页World Geology

基　　金：国家自然科学基金项目(41790453)。

摘　　要：以松辽盆地西部斜坡带为研究区,结合野外露头及钻测井资料,围绕套保—平安镇地区开展沉积特征研究。对海36井进行层序地层划分,自下而上共分为SB1,SB2和SB3三个不整合面,识别并划分单井沉积相,在单井沉积相工作基础上,进一步建立沉积相展布模式,绘制西部斜坡区沉积体系图。结果表明:(1)西部斜坡区主要发育三角洲及湖泊沉积体系;(2)套保—平安镇地区的青山口组沉积时期主要物源来自于西部白城—英台物源,次要物源来自东北部的讷河物源。Taking the western slope area of Songliao Basin as the study area,combined with field outcrop and drilling and logging data,the sedimentary characteristics of Taobao-Ping anzhen region were studied.The sequence stratigraphy of Well Hai 36 was analyzed,with three unconformities,namely SB1,SB2 and SB3 identified from bottom to top,and the single-well sedimentary facies identification was undertaken.Based on the single-well sedimentary facies analysis,the distribution model of sedimentary facies was subsequently established and the sedimentary systems of western slope area were mapped.The results show that:①Delta and lacustrine sedimentary systems are mainly developed in the western slope area;②The main provenance of Qingshankou Formation deposition in Taobao-Ping anzhen region is the Baicheng-Yingtai that locates to the west of the study area and the secondary provenance is Nehe that locates to the northeast of the study area.

关 键 词：松辽盆地 西部斜坡区 青山口组 沉积相 扇三角洲 

分 类 号：P618.13[天文地球—矿床学]