石油与天然气地质 ›› 2008, Vol. 29 ›› Issue (2): 268-275.doi: 10.11743/ogg20080217

• 论文 • 上一篇    下一篇

构造不整合的分布样式及其对地层圈闭的制约——以塔里木盆地中泥盆世末为例

刘景彦1, 林畅松1, 彭丽1, 陈清清1, 张响响2, 周小军1   

  1. 1. 中国地质大学, 北京, 100083;
    2. 中国石油天然气股份有限公司, 石油勘探开发研究院, 北京, 100083
  • 收稿日期:2008-01-03 出版日期:2008-04-24 发布日期:2012-01-16
  • 基金项目:

    国家重点基础研究发展规划(973)项目(2006CB202302).

Distribution patterns of the end of the Middle Devonian tectonic unconformity and their constrain on the development and distribution of favorable stratigraphic traps in the Tarim Basin

Liu Jingyan1, Lin Changsong1, Peng Li1, Chen Qingqing1, Zhang Xiangxiang2, Zhou Xiaojun1   

  1. 1. China University of Geosciences, Beijing 100083, China;
    2. PetroChina Exploration & Development Research Institute, Beijing 100083, China
  • Received:2008-01-03 Online:2008-04-24 Published:2012-01-16

摘要:

中泥盆世末构造不整合是塔里木盆地最重要的不整合之一,是早海西构造变动的产物.这一不整合在盆地内分布十分广泛,从隆起区向洼陷区表现为叠合不整合、高角度不整合、微角度不整合、平行不整合至整合.在塔北、塔中等地区对下伏地层削蚀强烈,不整合之后又伴随着晚泥盆世东河砂岩的沉积上超,形成多个削蚀不整合三角带和上超不整合三角带.不整合的分布和结构样式反映了构造运动的结果,同时对有利地层圈闭发育分布具有明显的制约作用,削蚀不整合三角带是寻找志留系岩性地层圈闭的有利区,上超不整合三角带是寻找泥盆系东河砂岩岩性地层圈闭的有利区.

关键词: 构造不整合, 削蚀不整合, 上超不整合, 岩性地层圈闭, 中泥盆世末, 塔里木盆地

Abstract:

As a result of the early Hercynian Movement,the latest Middle Devonian tectonic unconformity is one of the most important unconformities in Tarim basin.It is widely distributed in the basin,occurring in the forms of superimposed unconformity,high angle unconformity,parallel unconformity,and conformity from the uplifted area to the depression.The underlying strata in Tabei and Tazhong areas were eroded severely and were accompanied by deposition and onlapping of the Donghe sandstone along the unconformity in Late Devonian,forming several erosional unconformity triangle zones and onlapping unconformity triangle zones.The distribution and structural styles of the unconformity are the results of tectonic movement and controls the distribution of the favorable stratigraphic traps.The erosional unconformity triangle zones are the potential areas for the Silurian lithologic traps,while the onlapping unconformity triangle zones are regarded as the favorable areas for the Devo-nian Donghe sandstone lithologic traps.

Key words: tectonic unconformity, erosional unconformity, onlapping unconformity, lithologic-stratigraphic trap, the end of the Middle Devonian, Tarim Basin

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