| 摘要: |
| 在前人研究基础之上,利用地震、测并、录井、岩心、簿片、地球化学等资料,以砂岩厚度,砂岩碎屑成分、沉积期 古地貌、砂岩重矿物含等多方面的证据确定研究R沙湾组的物源方向，并利用告石学、粒度分析、测井相、地篇相 等资料或方法研究沙湾组沉积相类型和展布特征，最后结合构造背景、古地貌、层序地层体系域的构成样式尝试对 其沉积相模式进行研究。结果表明:车排子地区沙湾组发育西南方向伊林黑比尔根山和西北方向扎伊尔山两个物 源体系，且西南方向的物源延伸距离远,波及范围大;沙湾组发育辫状河三角洲、扇-:角洲、湖泊3种沉积相类型，南 部地区发育大范围展布的退积型辫状河二.角洲，北部主要发育扇三角洲，其前端和侧翼发育滨浅湖滩坝砂沉积;辫 状河三角洲前缘水下分支河道砂体容易形成上倾尖灭型岩性圈闭，滨浅湖滩坝砂容易形成透镜体岩性阐闭。 |
| 关键词: 沉积相 物源 沙湾组 新近系 车排子地冈 准噶尔盆地 |
| DOI：10.3969/j.issn.1673-5005.2012.03.002 |
| 分类号:TE 121.3 |
| 基金项目:闻家重点基础研究发展计划项目(2011CB201001) |
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| Analysis of provenance and sedimentary facies of Neogene Shawan formation in Chepaizi area |
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YANG Kai1,DONG Ghen-qiang2,XU Guo-sheng3
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(1. School of Geosciences in China University of Petroleum, Qingdao 266580, China;2. College of Geoscience and Surveying Engineering in China University of Mining and Technology, Beijing 100083, Chirm ;3. Stale Key Laboratory of Oil and Gas Reservoir Geology and Exploitation，Chengdu 610059，China)
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| Abstract: |
| Based on the previous studies and by using the data of seismic, logging, cores, slice and geochemical, the source direction of Shawan group of study area was confirmed through various evidence of sanHstone thickness，sandstone clastic composition，paleo-geomorphology and sandstone heavy mineral content. The sedimentary facies and Shawan group exhibition characteristics were studied by means of the data and method of petrology, grain size analysis, log facies and seismic facies. |
| Key words: sedimentary facies provenance Shawan formation Neogene Chepaizi area Junggar Basin |
