SEISMOLOGY AND GEOLOGY ›› 1994, Vol. 16 ›› Issue (4): 413-421.

• Brief Report • Previous Articles     Next Articles

DEFORMATIONAL CHARACTERISTICS, EVOLUTIONARY HISTORY, AND DEFORMATION MECHANISM OF THE MIDDLE LONGMENSHAN THRUST-NAPPES AND RELATED TECTONICS

Chen Shefa1, Deng Qidong2, Zhao Xiaolin2, C. J. L. Wlison P. Dirks3, Luo Zhili4, Liu Shugen4   

  1. 1. China University of Geosciences(Wuhan), Wuhan 430074;
    2. Institute of Geology, Beijing 100029;
    3. University of Melbourne, Parkville, Vic. 3052, Australia;
    4. Chengdu College of Geology, Chengdu 610059
  • Received:1994-02-01 Revised:1994-09-01 Online:1994-12-07 Published:2009-11-25

龙门山中段推覆构造带及相关构造的演化历史和变形机制(二)

陈社发1, 邓起东2, 赵小麟2, C. J. L. Wilson P. Dirks3, 罗志立4, 刘树根4   

  1. 1. 中国地质大学(武汉), 武汉 430074;
    2. 国家地震局地质研究所, 北京 100029;
    3. 墨尔本大学, Parkville, Vic. 3052, 澳大利亚;
    4. 成都地质学院, 成都 610059
  • 基金资助:
    地展科学联合基金资助((91048),并吸收了中澳合作的部分成果

Abstract: The western Sichuan foreland basin initiated in T33 by continuous compression of the Long-menshan thrust-nappe belt,and its depositional centers were gradually transposed from NW to SE. The evolutionary history of the middle Longmenshan thrust-nappe belt and associated tectonics can be divided into three major stages:taphrogenic stage (D~T32),tectonic inversion stage (T33),and continuous thrusting stage (J~Kz).

Key words: Longmenshan, Thrust-nappe belt, Foreland basin, Evolutionary history, Deformation michanism

摘要: 川西前陆盆地是从晚三叠世晚期(须家河期)以来开始发育的,其形成是龙门山推覆构造带自北西往南东持续推覆的结果。本区的构造发展经历了伸展裂陷、构造反转和持续推覆3个主要阶段。构造变形的力源主要来自松潘-甘孜褶皱带的北东~南西向收缩派生的南东向挤压。

关键词: 龙门山, 推覆构造带, 前陆盆地, 构造演化, 构造变形机制