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Provenance and sedimentary facies of the Dainan Formation in the Lianmengzhuang region, Gaoyou depression, northern Jiangsu
Author(s): ZHOU Jian, LIN Chun-ming, ZHANG Yong-shan, Yao Yu-lai, CHEN Shun-yong, ZHANG Xia, ZHANG Ni
Pages: 1-
10
Year: 2012
Issue:
2
Journal: Sedimentary Geology and Tethyan Geology
Keyword: 物源分析; 沉积相; 母岩; 高邮凹陷; 戴南组;
Abstract: 综合运用碎屑岩类分析法、重矿物法对苏北盆地高邮凹陷联盟庄地区戴南组的物源方向进行了分析.结果表明,戴南组物源具有不稳定性,早、中期物源均来自柘垛低凸起,物源方向由沿东北方向沉积演变为沿南北方向沉积;晚期物源来自西北部的菱塘桥低凸起.联盟庄地区戴南组沉积物为再旋回沉积物,母岩区构造背景为活动大陆边缘,其源岩主要为花岗岩和中基性火成岩.根据岩心、电测曲线、录井以及分析测试资料,对联盟庄地区戴南组的沉积相平面分布进行了研究,三角洲的展布受河湖作用及物源供应的影响,早、中、晚期分别呈朵状、朵叶状和伸长状.
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