石油实验地质2017，Vol.39Issue(6)：849-857,9.DOI:10.11781/sysydz201706849
渤海湾盆地黄骅坳陷湖相碳酸盐岩微量元素特征及沉积环境
Trace element characteristics and sedimentary environment of lacustrine carbonate rocks in the Huanghua Depression,Bohai Bay Basin
摘要
Abstract
Carbonate rocks dominate in the lower part of the first member of Shahejie Formation in the Huanghua Depression,Bohai Bay Basin. The geochemical characteristics of trace elements in Kongdian-Yangsanmu, Qijiawu and Qinan show that the content and distribution of trace elements varied in different pays,but those of Sr,Ba,V, Mn,Th,U were similar,and the contents of Ni,Pb,Zn and others tended to decrease from Qijiawu to Yangsanmu, indicating environmental changes during the diagenesis process.The B content varied(7.5-92.8)×10-6with an average of 42.8×10-6in Qijiawu, and varied(7.2-97.4)×10-6with an average of 45.21×10-6in Kongdian-Yangsanmu, indicating an alternating process of saline to fresh water environments. The Ti content varied(946-3 496)×10-6and averaged 2 319×10-6in the lower part of the first member of Shahejie Formation from Kongdian to Yangsanmu,show?ing nearby provenance characteristics.The V/(V+Ni)ratio indicated strong reducingenvironment in the study area, and the low Th/U ratio showed a higher salinity of lake water or the influence of seawater intrusion.关键词
微量元素/湖相碳酸盐岩/沉积环境/沙河街组/黄骅坳陷/渤海湾盆地Key words
trace element/lacustrine carbonate rock/depositional environment/Shahejie Formation/Huanghua Depression/Bohai Bay Basin分类
能源科技引用本文复制引用
王永炜,李荣西,高胜利,高鹏鹏,李泽敏,高潮,付明义..渤海湾盆地黄骅坳陷湖相碳酸盐岩微量元素特征及沉积环境[J].石油实验地质,2017,39(6):849-857,9.基金项目
国家科技重大专项项目(2008ZX05005-004-007HZ)资助. （2008ZX05005-004-007HZ）
