摘要
准噶尔盆地经历了晚海西、印支、燕山和喜马拉雅期多次构造运动的影响,多期构造变形叠加复合使盆地内构造变形复杂多样。由于各期构造运动影响的范围、应力作用方式不尽相同,因而盆地不同地区的构造变形样式、圈闭类型和分布特征各不相同。西北部构造区( 带) 发育“鱼鳞”状冲断推覆构造;东北部构造区( 带) 以雁列状展布的冲断构造为主;东、西部构造区( 带) 发育近直线状冲断构造;南部构造区(带) 发育“瓦垅”状推覆构造;中央构造区变形较弱,以隆坳变形为主,发育少量正断层和逆断层。各构造区(带) 发育了特征不同的油气圈闭。
The Junggar basin is a large-scale compound basin filled with the Paleozoic, Mesozoic and Cenozoic continental deposits. The structural features are very complicated because of the effects of tectonic movements during late Variscan, Indosinian, Yanshan and Himalayan movements. The basin can be divided into six structural belts according to structural styles of the basin. There are two “fish scale shape” thrust-nappe structures in northwest part of the basin. The echelon thrust-nappes formed in northeast part. There are a series of parallel thrust faults in west and east parts. There are the oblique-imbricated structure and the imbricated structure in south part. Uplifts, depressions, thrust faults, and normal faults formed before Jurassic in the central part of the basin.
出处
《地震地质》
EI
CSCD
北大核心
1999年第4期324-333,共10页
Seismology and Geology
基金
国家"九五"重点项目!(961010503)
