The High-Resolution Sequence Stratigraphy Feature of Yanan Formation in Yanan Area, Ordos Basin

ZHAO Jun-xing; CHEN Hong-de; XIANG Fang

On the basis of high-resolution sequence stratigraphy,the detailed study on the subdivision of different orders of the base-level cycles in middle Jurassic Yanan Formation has been performed in Yanshui river cross section,and a corresponding high-resolution sequence framework has been established in the middle part of Ordos Basin.There can be recognized 34 short,8 middle and 3 long base-level cycles.Simultaneously,the paper has also discussed the relationship between the stacking patterns of different cycles and sedimentary facies,deposition and tectonics,and furthermore,investigated the basinal filling history by the base-level cycle sequences.

Chengdu University of Technology, Chengdu 610059

Received Date: 2002-02-26

Rev Recd Date: 2002-05-08

Publish Date: 2003-06-10

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Abstract: On the basis of high-resolution sequence stratigraphy,the detailed study on the subdivision of different orders of the base-level cycles in middle Jurassic Yanan Formation has been performed in Yanshui river cross section,and a corresponding high-resolution sequence framework has been established in the middle part of Ordos Basin.There can be recognized 34 short,8 middle and 3 long base-level cycles.Simultaneously,the paper has also discussed the relationship between the stacking patterns of different cycles and sedimentary facies,deposition and tectonics,and furthermore,investigated the basinal filling history by the base-level cycle sequences.

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The High-Resolution Sequence Stratigraphy Feature of Yanan Formation in Yanan Area, Ordos Basin

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