鄂尔多斯盆地合水地区二叠系山西组1段物源分析  

Analysis of sediment provenance in the 1th member,Shanxi Formation of Permian in Heshui area of Ordos Basin

作　　者：高扬[1] 朱亚林[1] 路繁荣 彭喜明[1] 

机构地区：[1]西北大学地质学系/大陆动力学国家重点实验室,陕西西安710069

出　　处：《复杂油气藏》2017年第4期19-22,50,共5页Complex Hydrocarbon Reservoirs

摘　　要：近年来,随着鄂尔多斯盆地南部地区古生界二叠系油气藏的发现,其物源研究也逐渐引起了人们的重视。在测井、岩心和露头资料的基础上,通过对轻矿物、重矿物分布特征及古流向等资料分析,探讨了研究区山西组1段的物源问题。分析结果表明:在研究区存在两个物源区,即西南部物源区和东北部物源区,通过区域构造对比发现研究区西南部物源区母岩应为祁连-北秦岭地区前寒武系的岩浆岩和变质岩系,东北部物源来自于阴山地区。In recent years, with the discovery of oil - gas reservoirs of Paleozoic Permian in southern area Basin, people also gradually pay more attention to the provenance study. Based on the information of logging, outcrops, the provenance of the first member of Shanxi Formation in the study area was discussed by analyzing the tion characteristics of light and heavy minerals and the paleocurrent direction. The analytical results showed that two provenance areas in the study area, namely, the southwestern source area and the northeastern source area. of Ordos core and distribu- there are Through the regional structure comparison and the feature analysis of light and heavy minerals, the results discovered that the parent rocks of the southwest provenance source area are supposed to the magmatic rocks and metamorphic rocks of the Precambrian in the Qilian - north Qinling Mountains area, and the northeastern source was from the Yinshan area.

关 键 词：重矿物 轻矿物 古流向 山西组1段 合水地区 鄂尔多斯盆地 

分 类 号：P5[天文地球—地质学]