孔雀河斜坡东南部中上奥陶统物源研究新认识  

The New Understanding Obtained from the Study of the Sediment Source in Southeastern of the Kongque River Slopes in the Middle-Late Ordovician

作　　者：韩伟[1] 任战利[1] 孔省吾[2] 何斌[3] 

机构地区：[1]西北大学大陆动力学国家重点实验室,西北大学地质学系,陕西西安710069 [2]东营市北一路210胜利油田物探研究院,山东东营257022 [3]新疆油田公司百口泉采油厂,新疆克拉玛依834000

出　　处：《西北地质》2008年第2期87-92,共6页Northwestern Geology

基　　金：高等学校全国优秀博士学位论文作者专项资金(200347)

摘　　要：通过对塔里木盆地孔雀河斜坡东南部地区中晚奥陶系砂岩中重矿物分析研究,表明库鲁克塔格露头样品稳定重矿物为锆石-电气石-石榴石-磁铁矿-赤褐铁矿组合,孔雀1井样品稳定重矿物为锆石-石榴石-电气石-白钛石组合,二者有些差异,但分析结果反映了同样的母岩性质。研究区内沉积岩母岩主要来自于酸性、中基性岩浆岩和部分变质岩,为混源产物。结合对地震剖面的分析,认为研究区物源来自南(阿尔金造山带)和北(库鲁克塔格隆起)两部。根据稳定重矿物ZTR指数判断,南、北两个方向而来的沉积物在孔雀1井附近交汇,并沿各自路线运移、沉积。The analysis and research of heavy mineral of the sandstone in southeastern of the Kongque River slopes of the Tarim basin in the Middle-Irate Ordovician show that the stable heavy mineral composition of Kuruktag Outcrop samples is Zircon-Tourmaline-Garnet-Magnetite-Chek limonite. The stable heavy mineral composition of the well Kongque 1 is Zircon-Garnet-Tourmaline-Leucoxene. There are some differences between the two compositions, but the analytical results reflect the same characteristics of source rocks. The source rocks in the study area are mainly from acid, intermediate-basic igneous rocks and some metamorphic rocks. They are mixed products. Through the analysis of the Seismic profiles, this paper hold the opinion that the sediment source of the study area comes from the south （Altun Orogen） and the north （Kuruktag uplift）. According to the ＂ZRT＇ index of the stable heavy mineral, the sediments proved coming from south and north met in area around the well Kongque 1, then migrated and deposited along their own way.

关 键 词：孔雀河斜坡 中上奥陶统 重矿物 地震剖面 物源 

分 类 号：TE122[石油与天然气工程—油气勘探]