微量元素在鹤岗盆地早白垩世沉积环境分析中的应用  

Indicative significance of trace element analysis in Early Cretaceous sedimentary environment of Hegang Basin

作　　者：冀华丽 何中波[1] 卫三元[1] 曹建辉[1] 杨帆[2] JI Huali;HE Zhongbo;WEI Sanyuan;CAO Jianhui;YANG Fan(BeiJing Research Institute of Uranium Geology,Beijing 100029;Sinopec Research Institute of Petroleum Engineering,Beijing 100101)

机构地区：[1]核工业北京地质研究院,北京100029 [2]中石化石油工程技术研究院,北京100101

出　　处：《矿产勘查》2020年第1期21-27,共7页Mineral Exploration

基　　金：国防预研究基金;中国地质调查局地质调查项目(编号:DD2016013641);中国核工业地质局铀矿勘查项目(编号:201713,201929)联合资助

摘　　要：以鹤岗盆地早白垩世样品中微量元素测试结果为基础,选用对沉积介质环境反映比较敏感的锶(Sr)、钡(Ba)、铜(Cu)、铀(U)、钒(V)、镍(Ni)等微量元素指标,探讨了Sr/Ba、Sr/Cu、V/(V+Ni)、Cu/Zn、Th/U值与沉积环境的对应关系。分析结果表明:Sr/Ba比值较小,反映陆相淡水环境;Sr/Cu比值较高,表明处于干热气候;V/(V+Ni)比值较高,推断处于厌氧环境。总体来说,鹤岗盆地早白垩世猴石沟沉积时期沉积环境主要为偏干热气候的陆相淡水还原环境。Based on the results of trace element analysis in early Cretaceous samples from Hegang Basin,trace elements such as strontium( Sr),barium( Ba),copper( Cu),uranium( U),vanadium( V),nickel( Ni),which are sensitive to the environment of sedimentary media,are selected in this paper,meanwhile,the relationship between Sr/Ba,Sr/Cu,V/( V+Ni),Cu/Zn,Th/U ratio and sedimentary environment is discussed. The results show that: Sr/Ba ratio is small,which reflecting the terrestrial freshwater environment;Sr/Cu ratio is higher,which indicating that it is in dry and hot climate. The ratio of V/( V+Ni) is higher and it is inferred that it is in anaerobic environment. On the whole,The sedimentary environment of early Cretaceous Houshigou Formation in Hegang Basin is mainly terrestrial freshwater reduction environment with dry and hot climate.

关 键 词：微量元素 沉积环境 早白垩世 猴石沟组 鹤岗盆地 黑龙江 环境地球化学勘查工程 

分 类 号：P618.7[天文地球—矿床学]