徐淮震旦系九顶山组地层岩石地球化学特征及沉积环境研究  

Study on Petro-Geochemical Characteristics and Sedimentary Environment of the Jiudingshan Formation of the Xuhuai Sinian System

作　　者：张红伟 闵宁 许思羽 李阳时佳 衡哲 杨玉刚 李丰 ZHANG Hongwei;MIN Ning;XU Siyu;LI Yangshijia;HENG Zhe;YANG Yugang;LI Feng(School of Resources and Civil Engineering,Suzhou University,Suzhou Anhui 234000)

机构地区：[1]宿州学院资源与土木工程学院,安徽宿州234000

出　　处：《河南科技》2021年第8期143-145,共3页Henan Science and Technology

基　　金：安徽省2017年度省级大学生创新创业项目“不同管运状态下道路两侧土壤重金属分布特征研究”(201710379137);安徽省2019年度省级大学生创新创业项目“基于微量元素比值法的皖北寒武纪馒头组地层沉积环境研究”(201910379172);宿州学院校级科研平台项目“宿州市饮用水水源中多环芳烃的特征及生态风险评价”。(2019YKF02)。

摘　　要：沉积岩中的化学元素的分析常用来鉴定古沉积环境。本文岩石样品地球化学特征主要为:样品Zr与4.21~14.3μg/g,MgO/Al_2O_3均值为9.53,指示海相沉积;U/Th值较低、δU<1,V/(V+Ni)均值为0.78,V/Cr均值为1.11,Ni/Co均值为0.24,显示为氧化-弱还原环境;Sr/Cu>10,指示干热气候。Chemical elements in sedimentary rocks are often used to analyze ancient sedimentary environments. This paper the geochemical characteristics of rock samples were mainly as follows: Zr was positively correlated with Th,δEu-δCe and ∑REE-δCe had no obvious correlation;Sr/Ba > 1, Ba content 4.21~14.3μg/g, MgO/Al2 O3 mean value 9.53,indicating Marine deposition;When U/Th value is low, δU < 1,the mean value of V/(V+Ni)is 0.78, the mean value of V/Cr is 1.11, and the mean value of Ni/Co is 0.24, indicating an oxidation-weak reduction environment. Sr/Cu > 10, indicating dry and hot climate.

关 键 词：震旦系 岩石地球化学 沉积环境 

分 类 号：P534[天文地球—古生物学与地层学]