| 四川盆地西缘中新生代地层区划及盆山演化 |
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| 引用本文： | 罗威,石和,陈洪德,侯明才,常晓琳.四川盆地西缘中新生代地层区划及盆山演化[J].海相油气地质,2009,14(4):49-54. |
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| 作者姓名： | 罗威 石和 陈洪德 侯明才 常晓琳 |
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| 作者单位： | 1. 成都理丁大学沉积地质研究院
2. 成都理丁大学沉积地质研究院;油气藏地质及开发工程国家重点实验窒 |
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| 摘 要： | 四川盆地西缘分为龙门山分区和四川盆地分区。已有的地层区划方案均对两大分区采用一条绝然的界限,忽略了盆地西缘原地地层系统与外来地层系统之间不同的沉积环境及构造演化模式。认为在两个分区之间并没有绝然的界线,而是以组成龙门山的三个主要推覆体东缘的断裂为主要界线,但将该界线以东中小飞来峰地层系统归属于龙门山分区,而将介于该界线与中小飞来峰之间的由于飞来峰与主体脱离而暴露的原地地层系统归属于四川盆地分区。龙门山分区可进一步划分为三个小区,分别包含一个大型推覆体及若干中小推覆体或飞来峰,反映了龙门山各段不同的隆升时间及沉积特征。将四川盆地分区进一步划分为西南小区和西北小区,主要以上白垩统及其以上地层是否发育相区别。
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| 关 键 词： | 中生代 新生代 地层划分 构造演化 盆地西缘 四川盆地 |
Regionalization of Mesozoic-Cenozoic Strata and Basin-Range Evolution along the West Margin of Sichuan Basin |
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| Luo Wei,Shi He,Chen Hongde,Hou Mingcai,Chang Xiaolin.Regionalization of Mesozoic-Cenozoic Strata and Basin-Range Evolution along the West Margin of Sichuan Basin[J].Marine Origin Petroleum Geology,2009,14(4):49-54. |
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| Authors: | Luo Wei Shi He Chen Hongde Hou Mingcai Chang Xiaolin |
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| Abstract: | The west margin of Sichuan Basin is divided into the Longmenshan Range region and the Sichuan Basin region. The regionalizations presented by primary references consider that there is an apparent tectonic line between the both regions,which neglects different depositional environment and structural evolution between the autochthonous strata and the allochthonous strata along the west margin. A different regionalization is put forward that the apparent line does not exist between the two regions while the faults in the east of the three nappes that consist of the Longmenshan Range should be as the main line. It is proposed that Longmenshan Range region can be divided into three subregions and Sichuan Basin region into both the southwest and northwest subregions. The project of this regionalization is represented in detail. |
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| Keywords: | Mesozoic Cenozoic Basin margin Tectonic evolution Regionalization of strata Sichuan Basin |
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