沉积与特提斯地质Issue(2)：47-53,7.
四川盆地东北部中二叠统层序地层特征
Sequence Stratigraphy of the Middle Permian strata in northeastern Sichuan Basin
刘雁婷 1张文军 1熊治富 1赵永庆 1季春辉1
作者信息
- 1. 中国石化勘探南方分公司勘探研究院，四川 成都 610041
- 折叠
摘要
Abstract
Four sequence boundaries in the Middle Permian strata in northeastern Sichuan Basin are identified:uplift erosion unconformity, subaerial sequence unconformity, transgressive ( coastal ) onlap unconformity and lithologic-lithofacies unconformity on the basis of outcrops, well logs, seismic and palaeontological data. Three third-order sequences encompass SQ1 corresponding to the Liangshan and Qixia Formations with a time duration of ca. 7 Ma;SQ2 corresponding to the first member of the Maokou Formation with a time duration of ca. 3 Ma, and SQ3 corresponding to the second and third members of the Maokou Formation with a time duration of ca. 5 Ma. The controlling factors include: ( 1 ) the controls of the sequences on sedimentary facies, which exert an important influence on the development of primary porosity in the reservoirs, and ( 2 ) the controls of carbonate rocks development by the eustatic fluctuations in the third-order sequences. The excellent reservoirs are apparently constrained by the transgressive semi-cycles.关键词
四川盆地/中二叠统/层序地层/储层Key words
Sichuan Basin/Middle Permian/sequence stratigraphy/reservoirs分类
天文与地球科学引用本文复制引用
刘雁婷,张文军,熊治富,赵永庆,季春辉..四川盆地东北部中二叠统层序地层特征[J].沉积与特提斯地质,2014,(2):47-53,7.
