山东大汶口盆地石盐地球化学特征及其成因  

Geochemical Characteristics of Evaporites from Halite Deposits in Dawenkou Basin,Shandong Province

作　　者：谢丽丽 孟凡巍 卓勤功 张国权[1] XIE Li-li;MENG Fan-wei;ZHUO Qin-gong;ZHANG Guo-quan(Shandong Provincial Lunan Geology and Exploration Institute(Shandong Provincial Bureau of Geology and Mineral Resources No.2 Geological Brigade),Yanzhou,272100,China;School of Resources and Geosiciences,China University of Mining and Technology,Xuzhou,221116,China;Qinghai Provincial Key Laboratory of Geology and Environment of Salt Lakes,Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining,810008,China;Research Institute of Petroleum Exploration and Development,CNPC,Beijing,100083,China;CNPC,Key Laboratory of Basin Structure and Hydrocarbon Accumulation,Beijing,100083,China)

机构地区：[1]山东省鲁南地质工程勘察院(山东省地质矿产勘查开发局第二地质大队),山东兖州272100 [2]中国矿业大学资源与地球科学学院,安徽徐州221116 [3]青海省盐湖地质与环境重点实验室,青海西宁810008 [4]中国石油勘探开发研究院,北京100083 [5]中国石油集团盆地构造与油气成藏重点实验室,北京100083

出　　处：《盐湖研究》2023年第3期59-68,共10页Journal of Salt Lake Research

基　　金：山东省泰安市岱岳区新宅子地区岩盐矿普查。

摘　　要：白垩纪晚期-第三纪早期喜马拉雅期运动在中国东部形成一系列的内陆断陷含盐盆地,其中不少是中国的主力油气盆地。山东大汶口盆地是该时期山东地区西部最大的沉积赋矿盆地,也是中国东部发现的唯一含钾盐的盆地,盆地中富含石膏、岩盐、钾盐、自然硫等蒸发岩型矿产资源。大汶口盆地具有东向洼地、满庄-大西牛洼地两个沉降中心。本研究即通过满庄-大西牛洼地附近的钻孔,首次对山东大汶口盆地石盐地球化学特征进行了包括溴含量在内的系统分析,同时分析了石膏夹层的硫同位素。山东大汶口盆地石盐的溴含量在(3~19)×10-6之间,硫同位素在14.7‰~35.7‰之间,这些分析结果都揭示山东大汶口盆地石盐为内陆盐湖成因。From the late Cretaceous to the early Tertiary,a series of inland faulted saline basins were formed in eastern China due to the Himalayan movement,many of which are the main oil and gas basins in China.Dawenkou basin is the largest sedimentary ore bearing basin in the western part of Shandong Province,and the only potash bearing basin found in eastern China.The basin has abundant evaporite resources such as gyp⁃sum,rock salt,potash and natural sulfur.Dawenkou basin has two subsidence centers,Dongxiang depres⁃sion and Manzhuang-Daxiniu depression.In this study,the geochemical characteristics of halite and gypsum from evaporite in Dawenkou basin,Shandong Province,including bromine contents,were systematically ana⁃lyzed by drilling holes near Manzhuang-Daxiniu depression for the first time.The bromine contents of halite in Dawenkou basin,Shandong Province are(3~19)×10-6 and the sulfur isotope data range is 14.7‰~35.7‰.These analysis results reveal that the halite in Dawenkou basin,Shandong Province is of inland salt lake origin.

关 键 词：第三纪 大汶口盆地 石盐 石膏 钾盐 溴含量 

分 类 号：P594.4[天文地球—地球化学]