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

• 地质勘探 • Previous Articles     Next Articles

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

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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