• RSS
  • E-mail Alert
  • 收藏主页

古地理学报 ›› 2012, Vol. 14 ›› Issue (3): 295-302. doi: 10.7605/gdlxb.2012.03.003

• “鄂尔多斯盆地三叠系延长组”专题 • 上一篇    下一篇

鄂尔多斯盆地黄陵地区上三叠统延长组长7、长6油层组浊积岩沉积特征及地质意义*

冯娟萍1 李文厚2 欧阳征健3,4   

  1. 1 西安科技大学地质与环境学院，陕西西安 710054
    2 西北大学地质学系，陕西西安 710069
    3 成都理工大学沉积地质研究院，四川成都 610059
    4 中国石油长庆油田公司勘探开发研究院，陕西西安 710018
  • 收稿日期:2011-05-20 修回日期:2012-03-10 出版日期:2012-06-01 发布日期:2012-06-01
  • 通讯作者: 通讯作者简介 欧阳征健，男，1976年生，高级工程师，在成都理工大学博士后流动站从事博士后研究，主要从事造山带与盆地地质研究 E-mail:fengjuanping@163.com
  • 作者简介:冯娟萍，女，1978年生，博士，西安科技大学讲师，主要从事沉积学、储集层地质学与含油气盆地分析研究。E-mail:fengjuanping@163.com。
    通讯作者简介 欧阳征健，男，1976年生，高级工程师，在成都理工大学博士后流动站从事博士后研究，主要从事造山带与盆地地质研究。E-mail:ouyangzhengjian@126.com。
  • 基金资助:
    陕西省教育厅专项科研计划项目（编号：09JK567）和国家自然科学基金项目（批准号：41173035）共同资助

Sedimentary characters and geological implication of turbidite of the Chang 6 and Chang 7 intervals of Upper Triassic Yanchang Formation in Huangling area，Ordos Basin

Feng Juanping1, Li Wenhou2, Ouyang Zhengjian3,4   

  1. 1 College of Geology and Environment，Xi′an University of Science and Technology，Xi′an 710054，Shaanxi
    2 Department of Geology，Northwest University，Xi′an 710069，Shaanxi
    3 Institute of Sedimentary Geology，Chengdu University of Technology，Chengdu 610059，Sichuan
    4 Research Institute of Exploration and Development， PetroChina Changqing Oilfield Company，Xi′an 710018，Shaanxi
  • Received:2011-05-20 Revised:2012-03-10 Online:2012-06-01 Published:2012-06-01
  • About author:Feng Juanping，born in 1978，is a lecturer in Xi′an University of Science and Technology with a Ph.D.degree. Now she is engaged in the researches of sedimentology, reservoir geology and analysis of oil and gas-bearing basin.E-mail: fengjuanping@163.com.
    About the corresponding author Ouyang Zhengjian，born in 1976， is engaged in the researches of orogen and basin geology.E-mail: ouyangzhengjian@126.com.

RichHTML

PDF

摘要： 利用岩心观察、薄片鉴定和粒度分析等方法，对鄂尔多斯盆地黄陵地区上三叠统延长组长7、长6油层组浊积岩沉积特征与油气地质意义进行了研究。研究结果表明，浊积岩主要为长石砂岩，以棱角状—次棱角状为主，粒度具有典型的浊流沉积特征。沉积构造可见泥底构造、同生变形构造、粒序递变层、鲍玛序列等。最常见的鲍玛序列有ABC型、AB型、ADE型、AE型、CDE型和A段叠置型，具备浊积岩的典型特点。识别出薄层浊积岩和中厚层浊积岩，其属于三角洲前缘滑塌成因，可分为中心微相和边缘微相。浊流砂体是半深湖—深湖区发育的良好储集体，其分布区可作为重要的油气勘探区。

关键词: 鄂尔多斯盆地, 延长组, 浊流沉积, 沉积特征, 滑塌浊积岩

Abstract: Based on cores，thin sections，grain size analyses，the sedimentary characteristics of turbidite and its geological significance of the Chang 7 and Chang 6 intervals of Upper Triassic Yanchang Formation have been studied systematically in Huangling area of the Ordos Basin.The study results indicated that the turbidites are angular and sub-angular arkose and has the typical characteristics of turbidite deposition according to the results of grain size analysis.The turbidites are characterized by erosion surfaces，synsedimentary deformation structures，graded sequence and the Bouma sequences including ABC、AB、ADE、AE、CDE and A overlaying models which are the typical sedimentary characteristics of turbidite.The turbidite intervals mainly include two types，one is thin bedded and the other is medium-thick bedded.The tubidites are formed by the slump sediments of delta-front and can be divided into two sedimentary facies belts， i.e. the central and marginal microfacies.Turbidity sandstone is regarded as good reservoir formed in semi-deep lacustrine to deep lacustrine environments and becomes important oil-gas exploration target.

Key words: Ordos Basin, Yanchang Formation, turbidite deposition, sedimentary characteristics, fluxoturbidite

中图分类号: