西南石油大学学报(自然科学版) ›› 2010, Vol. 32 ›› Issue (2): 41-47.DOI: 10.3863/j.issn.1674-

• 地质勘探 • 上一篇    下一篇

黔西南三叠系层序充填格架及对印支运动响应

时 国1 田景春1,2 张 翔1 李 蓉1 喻美艺3   

  1. 1.成都理工大学沉积地质研究院,四川 成都 610059; 2.“油气藏地质及开发工程”国家重点实验室•成都理工大学,四川 成都 610059;3.贵州大学资源与环境工程学院,贵州 贵阳 550003
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2010-04-20 发布日期:2010-04-20

THE SEQUENCE FILLING FRAMEWORK OF TRIASSIC IN SOUTHWESTERN GUIZHOU AND THE RESPONSE TO INDO-CHINA MOVEMENT

SHI Guo1 TIAN Jing-chun1,2 ZHANG Xiang1 LI Rong1 YU Mei-yi3

  

  1. 1.Institute of Sedimentary Geology,Chengdu University of Technology,Chengdu Sichuan,610059,China;2.State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Chengdu University of Technology,Chengdu Sichuan 610059,China;3.School of Resource and Environment Technology,Guizhou University,Guiyang Guizhou 550003,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-04-20 Published:2010-04-20

摘要:

选取黔西南地区上扬子碳酸盐岩台地—右江盆地的三叠系剖面进行层序划分对比,并重点对台地边缘剖面进行研究,将三叠系划分为8个三级沉积层序。在此基础上,通过与Haq等列出的三叠纪生物地层时代进行对比,建立了黔西南地区三叠系层序充填格架。根据三级沉积层序自下而上的发育组合将三叠系划分出3个二级层序:SS1、SS2、SS3。本区层序充填特征亦反映了印支运动的3个幕次。印支Ⅰ幕,右江盆地为欠补偿型被动大陆边缘阶段,以构造沉降作用为主;印支Ⅱ幕,右江盆地进入过补偿型前陆发展阶段,由于南部板块碰撞的加强,沉积中心向西北迁移;印支Ⅲ幕,随着扬子陆块的全面隆升,西部盆地和东部台地区抬升消亡。

关键词: 层序地层, 地层充填格架, 三叠系, 黔西南

Abstract:

The Triassic sections across southwestern Guizhou of upper Yangtze carbonate platform-Youjiang Basin are selected to correlate the consequences,the study also focuses on the sedimentary characteristics of the platform marginal facies.According to the research above,the Triassic is divided into 8 third-order sedimentary sequences.The Triassic sequence filling framework is established by comparing the Haq biostratigraphic data.Three second-order sequences are divided,SS1,SS2,SS3,which are in accordance with genetic stratigraphic combination of third-order sedimentary sequences.The sequence filling characteristics of studied area also reflect three Indo-China movement episodes.Youjiang Basin came to the stage of undercompensated passive continental marginal development during the Indo-ChinaⅠepisode,Youjiang Basin to the stage of overcompensated foreland development during the Indo-ChinaⅡepisode,the sedimentary center switched to the northwest as a result of the strengthening of southern plate collision,with all-round uplifting of the Yangtze block during the Indo-China Ⅲ episode,the western basin and eastern platform demised.

Key words: sequence stratigraphy, sequence-filling framework, Triassic, southwestern Guizhou

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