纵弯叠加褶皱地区应力场研究-以川东北地区为例  

RESEARCH ON THE STRESS FIELDS IN SUPERPOSED FOLD AREA-AN EXAMPLE FROM NORTHEASTERN SICHUAN

作　　者：黄继钧[1] 

机构地区：[1]成都理工学院地质学系,成都610059

出　　处：《地质科学》2000年第2期140-150,共11页Chinese Journal of Geology(Scientia Geologica Sinica)

基　　金：国家自然科学基金!资助项目"构造复合联合原理"部分内容

摘　　要：川东北地区主体构造为北西向大巴山弧形构造带和北东 -北东东向川东弧形褶皱带 ,发育早期北东向纵弯褶皱和晚期北西向纵弯褶皱 ,两者构成明显的纵 -纵复合叠加 ,形成典型的限制褶皱、横跨褶皱、斜跨褶皱和移褶等。早、晚两期褶皱和共轭“X”节理均反映出早期应力场为北西 -南东向水平挤压 ,晚期应力场为北东 -南西向挤压。The Dabashan arcuate tectonic zone and the Chuandong arcuate folded belt constitute the main structures in the area of northeastern Sichuan. The superposed buckling folding occurred in the early-formed northeast-striking buckling folds and later-formed northwest-striking buckling folds, forming typical restricted fold, cross fold, obliquely cross fold and shifted fold. These two generations of folding and conjugate X-shaped joints indicate that the early stress field being NW-SE horizontal compression, and the later stress field NE-SW one respectively.

关 键 词：纵弯褶皱 褶皱叠加 应力场 赤平投影 东北地区 

分 类 号：P542.2[天文地球—构造地质学]