河南省上石炭统本溪组沉积相分析  

Sedimentary face analysis of Benxi Formation of Upper Carboniferous in Henan Province

作　　者：俎新许[1] 陈倩倩[1] 李锋[1] 叶星[1] 刘二欢 陶驰 ZU Xinxu;CHEN Qianqian;LI Feng;YE Xing;LIU Erhuan;TAO Chi(The Second Geological Survey Institute of Henan Bureau ofGeo-Exploration&Mineral Development,Zhengzhou 450000,Henan,China)

机构地区：[1]河南省地质矿产勘查开发局第二地质勘查院

出　　处：《矿产与地质》2019年第4期683-689,共7页Mineral Resources and Geology

基　　金：河南省地质勘查基金项目（编号：豫国土资发〔2015〕96号）资助

摘　　要：河南省上石炭统本溪组是以铁铝岩系为主的一套地层,广泛分布于豫西和豫北地区。对研究区本溪组的地层特征、剖面特征、沉积构造、生物面貌、微量元素等特征进行了综合研究,将研究区划分为3个相区:即潟湖-砂坝-海湾相,潟湖-海湾-沼泽相,滨海-潟湖-沼泽相。研究表明:上石炭统本溪组是在封闭-半封闭环境下的一套以陆源物质为主的滨海相沉积,其沉积演化序列反映了海水由进到退的过程。The Benxi Formation of Upper Carboniferous is a set of strata dominated by the iron-aluminum rock series,which is widely distributed in the west and north of Henan Province.On the basis of the integrated study of the stratigraphic characteristics,profile characteristics,sedimentary structure,biological feature,trace elements and so on,the study region is divided into three phase areas,lagoon-sand dam-bay face,lagoon-bay-swamp face and coastal-lagoon-swamp face areas.The study shows that the Benxi Formation of Upper Carboniferous is a set of coastal phase sediment dominated by land-source materials in a closed-semi-closed environment.The sedimentary evolution sequence reflects the process of the seawater from entering to retreating.

关 键 词：沉积相 上石炭统 本溪组 河南省 

分 类 号：P539[天文地球—古生物学与地层学] P534.45[天文地球—地质学]