铁边城地区长4+5油组重矿物特征及物源分析  

Characteristics of Heavy Minerals and Provenance Analysis of Chang4+5 of Yanchang Formation in Tiebiancheng Region

作　　者：杨云祥[1] 陈小兵 

机构地区：[1]西安石油大学油气资源学院,陕西西安710065 [2]长庆油田公司第五采油厂,陕西西安710200

出　　处：《辽宁化工》2010年第12期1279-1281,共3页Liaoning Chemical Industry

摘　　要：铁边城地区延长组长4+5油组常见的重矿物有锆石、电气石、石榴石和白钛矿,依据重矿物的形貌特征及稳定性的平面变化趋势,可将它们自北东到西南划分为3个组合分带:石榴石+锆石+电气石、锆石+石榴石+电气石、锆石+电气石。重矿物组合特征及碎屑岩组分特征在平面上的变化趋势,表明北东方向为铁边城地区的主要物源区。石英的阴极发光特征表明研究区的母岩主要为中—低级变质岩系,说明北东方向的吕梁山和大青山区为该区的主要供屑区。Zircon, tourmalin, garnet and leucoxene are often predominate in Chang4＋5 of Yanchang formation, Tiebiancheng region. Based on surface texture of heavy minerals and variety trend of their stability in the plane, they can be divided into three types of combinations from east-north way to south-west： garnet＋ zircon＋ tourmalin, zircon＋ garnet＋ tourmalin, zircon＋tourmalin. Variety trend, combination characteristics of heavy minerals and constituent characteristics of clastic rocks, indicate that the east-north way is main provenance region of Tiebiancheng.Quartz cathode luminescence characteristics indicate that the source mother rock of Tiebiancheng belongs to a middle-low class metamorphic rock, and simultaneously show that Luliang Motmtain and Daqing Mountain in the east-northern Ordos basin are main material sources of Tiebiancheng region.

关 键 词：重矿物 组合特征 物源区 铁边城 

分 类 号：TE122[石油与天然气工程—油气勘探]