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    塔里木盆地塔东凸起西部中上奥陶统地震层序与海底扇沉积

    钟广法 刘学锋 邓常念 万里皋

    钟广法, 刘学锋, 邓常念, 万里皋, 2006. 塔里木盆地塔东凸起西部中上奥陶统地震层序与海底扇沉积. 地球科学, 31(3): 366-371.
    引用本文: 钟广法, 刘学锋, 邓常念, 万里皋, 2006. 塔里木盆地塔东凸起西部中上奥陶统地震层序与海底扇沉积. 地球科学, 31(3): 366-371.
    ZHONG Guang-fa, LIU Xue-feng, DENG Chang-nian, WAN Li-gao, 2006. Middle-Upper Ordovician Seismic Sequences and Submarine Fan Deposits in West Tadong Uplift, Tarim Basin, Northwest China. Earth Science, 31(3): 366-371.
    Citation: ZHONG Guang-fa, LIU Xue-feng, DENG Chang-nian, WAN Li-gao, 2006. Middle-Upper Ordovician Seismic Sequences and Submarine Fan Deposits in West Tadong Uplift, Tarim Basin, Northwest China. Earth Science, 31(3): 366-371.

    塔里木盆地塔东凸起西部中上奥陶统地震层序与海底扇沉积

    基金项目: 

    国家重点基础研究发展规划项目 G2000078501

    详细信息
      作者简介:

      钟广法(1964—),男,博士,副教授,从事地震、测井解释和层序地层学方面的教学科研工作.E-mail: gfz@mail.tongji.edu.cn

    • 中图分类号: P539.1

    Middle-Upper Ordovician Seismic Sequences and Submarine Fan Deposits in West Tadong Uplift, Tarim Basin, Northwest China

    • 摘要: 根据区域地震资料研究塔里木盆地塔东凸起西部中上奥陶统层序地层格架及沉积演化, 在中上奥陶统识别出了2个地震层序, 发现了叠置的丘状前积反射地震单元, 综合岩心观察、岩屑录井和薄片资料, 确认为海底扇沉积体.海底扇沉积主要由块状砂、砾岩, 递变层理砂岩, 平行层理砂岩, 砂纹层理粉砂岩, 变形或包卷层理粉砂岩, 水平层理泥质粉砂岩或粉砂质泥岩, 块状或递变的粉砂质泥岩和泥岩等岩相组成, 形成于中扇和外扇环境, 物源来自研究区南部的岛弧带.海底扇的发现对于塔东凸起乃至整个塔里木盆地中上奥陶统油气勘探具有重要意义.

       

    • 图  1  研究区构造位置略图(据贾承造等, 1995改绘)

      Fig.  1.  Sketch map of study area

      图  2  中上奥陶统地震层序划分及特征(剖面AB的位置见图 1)

      Fig.  2.  Characteristics of the Middle-Upper Ordovician seismic sequences along Profile AB

      图  3  中上奥陶统TZ29井(a) 和TZ28井(b) 地层剖面

      Fig.  3.  Middle-Upper Ordovician lithological columns at Well TZ29 (a) and Well TZ28 (b)

      图  4  海底扇的岩相类型及组合特征

      岩心照片的位置见图 3, 符号说明见正文

      Fig.  4.  Lithofacies and their combinations in submarine fan deposits

      图  5  海底扇砂岩QFL图

      Fig.  5.  QFL diagram of submarine fan sandstones

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    出版历程
    • 收稿日期:  2005-07-20
    • 刊出日期:  2006-05-25

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