摘要
新生代晚期 (5～ 4Ma)以来 ,西藏南部地区发生了整体快速抬升 ,同时形成了广泛分布的近南北走向的断陷谷、北东及北西走向的走滑断层。在藏南地区仍在活动的构造中 ,南北向挤压作用形成的南北走向的张裂、北东和北西走向的挤压 -走滑断层是该区的主要活动构造类型。这些构造的形成体现了南北向深层挤压作用所导致的中浅层次的沿挤压应力方向的张裂、北东及北西走向的剪切 -挤压型的共轭线性构造。
Since the late Cenozoic (5～4Ma), whole and quick uplifting has occurred and, at the same time, widely distributed NS trending rifts or rift-depressions and NE and NW trending strike-slip faults have been developed in southern Tibet. The NS trending normal faults, NE and NW trending strike-slip faults are the major active tectonics in southern Tibet. The formation of these structures may indicate that the NS direction compression in a deep lithospheric layer has resulted in NS trending linear structures paralleled to the compressing stress direction, as well as conjugated NE and NW trending shear-compressional faults.
出处
《地震地质》
EI
CSCD
北大核心
2000年第B12期117-124,共8页
Seismology and Geology
基金
国家自然科学基金项目! (4980 2 0 2 4 )
国家自然科学基金国际合作项目! (49810 12 0 4 12 )资助
中国地震局地质研究所论著! 2 0
