新疆石油地质

新疆石油地质 ›› 1996, Vol. 17 ›› Issue (3): 211-218.

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塔里木盆地西南坳陷的形成演化

伍致中, 刘东海   

  1. 新疆石油管理局地质调查处 乌鲁木齐 830011
  • 收稿日期:1996-02-09 出版日期:1996-09-01 发布日期:2020-07-27
  • 作者简介:高级工程师 石油地质

FORMATION AND EVOLUTION OF SOUTHWEST DEPRESSION IN TARIM BASIN

Wu Zhizhong, Liu Donghai   

  1. Department of Geological Survey Xinjiang Petroleum Administration Bureau, Urumqi 830011
  • Received:1996-02-09 Online:1996-09-01 Published:2020-07-27
  • About author:Wu Zhizhong, Senior Engineer, Petroleum Geology

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摘要： 塔里木盆地西南坳陷的形成演化,可以划分为5个主要阶段,即：新元古代统一古陆块的形成阶段;早古生代古陆块裂张、坳陷形成发展阶段;晚古生代坳陷变迁,西南坳陷东、西发展分异阶段;中生代内陆盆地的形成发展阶段;新生代大型滞后型前陆盆地形成发展阶段。从沉积和构造发育史分析,西南坳陷是一个新生代沉积占统治地位的山前坳陷。

关键词: 塔里木盆地, 西南, 坳陷, 形成, 构造演化, 山前坳陷

Abstract: Five major stages can be divided regarding formation and evolution of Southwest depression in Tarim basin, ①formation of united paleolandmass in Late Proterozoic; ②rifting of pale- olandmass and subsequent fonning and developing of depression in Early Palaeozoic;③evolution of depression and defferential development of Southwest depression at the eastern and western sides in Late Palaeozoic; ④formation and development of inland basin in Mesozoic; ⑤formaticm and develop- nient ol large lag foreland basin in Cenozoic. Southwest depression is a piedmont one dominated by Cenozoic sediments in terms of the sedimentary and tectonic history.

Key words: Tarim basin, Southwest, Depression, Formation, Evolution, Piedmcait depression