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 • Previous Articles     Next Articles

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

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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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