西南石油大学学报(自然科学版) ›› 2011, Vol. 33 ›› Issue (5): 9-13.

• 地质勘探 • 上一篇    下一篇

龙门山冲断带滑脱构造变形样式

金文正1,万桂梅2,王俊鹏3,杨孝群4,白万奎5
  

  1. 1. 中国地质大学(北京)海相储层演化与油气富集机理教育部重点实验室,北京海淀100083; 2. 中国石油大学(北京)地球科学学院,北京昌平102249; 3. 中国石油杭州地质研究院,浙江杭州310023; 4. 中国石油化工股份有限公司勘探南方分公司,四川成都610041; 5. 中国石化胜利油田分公司纯梁采油厂采油二矿,山东淄博256300
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-10-20 发布日期:2011-10-20

Deformation Types of Detachment Structure

JIN Wen-zheng1, WAN Gui-mei2, WANG Jun-peng3, YANG Xiao-qun4, BAI Wan-kui5
  

  1. 1. MOE Key Laboratory of Marine Reservoir Evolution and Hydrocarbon Accumulation Mechanism,China University of Geosciences (Beijing),Haidian,Beijing 100083,China;2. College of Geosciences,China University of Petroleum(Beijing),Changping,Beijing 102249,China;3. Hangzhou Institute of Petroleum Geology,PetroChina,Hangzhou,Zhejiang 310023,China;4. South Exploration Division Company,SINOPEC,Chengdu,Sichuan 610041,China;5. Chunliang Oil Production Plant,Shengli Oilfield,SINOPEC,Zibo,Shandong 256300,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-10-20 Published:2011-10-20

摘要: 龙门山冲断带发育多套滑脱带,如寒武系、志留系、下三叠统嘉陵江组、中三叠统雷口坡组等。通过野外地质
调查和地震剖面精细解释,认为在具有滑脱层的构造变形中,滑脱层本身发生强烈的挤压揉皱,使得上下地层发生显
著不同的构造变形,深部的构造变形在纵向上形成两个构造体系,其中上部构造变形体系具有强烈的构造变形,形成
大量的逆冲断裂带、背冲断块等构造变形样式,而下部构造变形体系则经历较弱的构造变形,地层保存完好,形成分层
差异构造变形,地表可以见到特征明显的坡坪式断层、节理发育的断开与连续、逆冲断层的尖灭消失、构造虚脱和弯流
褶皱、强烈的褶皱或者揉皱等。

关键词: 滑脱带, 构造变形, 坡坪式断层, 龙门山冲断带

Abstract: Many detachment layer can be found in Longmen Mountain Thrust Belt,such as Cambrian,Silurian,Lower Triassic Jianglingjiang Formation,Middle Triassic Leikoupo Formation and so on. Through field investigation and seismic explanation,we put forward that the detachment layers have an important effect on the deformation,they can experience intense compression and make the adjacent layer have different deformation styles as well,for example,the layers below the detachment layer may be preserved well,while the upper layers have intense deformation,such as thrust belt,pop-up. Some important styles can be identified in field investigation,such as slope-flat fault,breaking and continuing of the joints,disappearing of the thrust fault,etc.

Key words: detachment layer, deformation, slope-flat fault, Longmen Mountain thrust belt