惠民凹陷临北断阶沙三中亚段砂质碎屑流沉积特征  

Sandy Debris-flow Sedimentary Characteristics of Middle-Es3 in Linbei Step-fault Zone of Huimin Depression

作　　者：韩作振[1,2] 刘凤武[2] 高丽华[1,2] 夏迪[1,2] 韩梅[2] 李昊[1,2] 

机构地区：[1]山东科技大学山东省沉积成矿作用与沉积矿产重点实验室,山东青岛266590 [2]山东科技大学地球科学与工程学院,山东青岛266590

出　　处：《山东科技大学学报（自然科学版）》2016年第2期1-7,21,共8页Journal of Shandong University of Science and Technology(Natural Science)

基　　金：国家自然科学基金项目(41372108;41372134);高等学校博士学科点专项科研基金项目(20133718130001);山东省科技发展计划项目(2013G0020403);青岛市重点科研项目发展计划(13-4-1-2-gx);山东科技大学矿山灾害预防控制省部共建国家重点实验室培育基地(MDPC2013KF18)

摘　　要：利用岩心、测井资料以及重力流沉积理论,系统研究了惠民凹陷临北断阶沙三中亚段水下扇体的重力流沉积特征,前人研究认为该区沉积物为浊积岩,本文通过对研究区沙三中亚段碎屑岩岩石学特征研究,认为该区重力流沉积物为砂质碎屑流。砂质碎屑流沉积物主要为包含砂质团块的块状构造,含有泥岩撕裂屑,粒度累积概率曲线以跳跃悬浮总体居多为特征。并对该砂质碎屑流进行了沉积相的精细划分。Based on gravity flow deposit theory as well as the core and logging data,this paper studied the sedimentary characteristics of gravity flow of the underwater fans of middle-Es3 in Linbei step-fault zone of Huimin depression.Different from previous research which believed the sediments in this area to be turbidite,this research,based on the analysis of clastic rocks petrological characteristics of middle-Es3 in study area,found that the gravity flow sediments was sandy debris-flow deposits,most of which were massive structured sandy clumps with some mudstone tearing crumbs.They were predominantly jumping and suspending particles in cumulative grain size curve.The sedimentary facies of the sandy debris-flow was then divided.

关 键 词：惠民凹陷 临北断阶 砂质碎屑流 沉积相 

分 类 号：P618[天文地球—矿床学]