二连盆地川井坳陷白垩系地层元素地球化学特征及地质意义  

Geochemical Characteristics and Geological Significance of Cretaceous Strata Elements in Chuanjing Depression,Erlian Basin

作　　者：饶耕玮 刘晓东[1,2] 刘平辉 戴朝成[1,2] 黄光辉 RAO Geng-wei;LIU Xiao-dong;LIU Ping-hui;DAI Chao-cheng;HUANG Guang-hui(School of Geosciences,East China University of Technology,Nanchang 330013,China;Ministry of Nuclear Resources and Environment,National Key Laboratory,Nanchang 330013,China)

机构地区：[1]东华理工大学地球科学学院,南昌330013 [2]核资源与环境国家重点实验室,南昌330013

出　　处：《科学技术与工程》2021年第8期3023-3031,共9页Science Technology and Engineering

基　　金：国防科技工业经济资助项目(科工二司[2014]1587号);江西省研究生创新基金(YC2019-B107)。

摘　　要：为探究二连盆地川井坳陷白垩系地层元素地球化学特性及其地质意义,借助C3钻孔选取二连组到腾格尔组的20个白垩系地层样品进行研究,通过X射线荧光光谱(XRF)和电感耦合等离子体质谱(ICP-MS)方法分析了样品的元素地球化学特征,据此探讨了其对源岩属性,构造背景及古沉积环境重建的意义,并通过元素垂向特征演化图的高度耦合性,证明了气候干湿变化与古盐度及氧化还原之间密不可分的关系。The research aims to explore the element geochemical characteristics and geological significance of Cretaceous strata in Chuanjing depression of Erlian Basin.Thus,20 Cretaceous strata samples from Erlian formation to Tengger formation were selected by C3 borehole for study.Then,the element geochemical characteristics of the samples were analyzed by XRF and ICP-MS,and their source rock properties and structural back were discussed.The significance of source rock attributes were analyzed,and the landscape and paleosedimentary environment were constructed.Through the highly coupling of the evolution map of the vertical characteristics of elements,the inextricable relationship between dry and wet changes of the climate,paleosalinity and oxidation-reduction were identified.

关 键 词：二连盆地 元素地球化学 沉积环境 古气候环境 地质意义 

分 类 号：P588.2[天文地球—岩石学]