%0 Journal Article %A WANG Wei-tao %A ZHANG Pei-zhen %A LEI Qi-yun %T DEFORMATIONAL CHARACTERISTICS OF THE NIUSHOUSHAN-LUOSHAN FAULT ZONE AND ITS TECTONIC IMPLICATIONS %D 2013 %R 10.3969/j.issn.0253-4967.2013.02.001 %J SEISMOLOGY AND GEOLOGY %P 195-207 %V 35 %N 2 %X

As the outermost fault zone in the northeastern margin of the Tibetan plateau,the deep structures,distribution,movement feature and deformational mechanism of the Niushoushan-Luoshan Fault zone are crucial to understand the formation and evolution of the arcuate fault zones in the northeast corner of the Tibetan plateau. In this paper,we analyze four seismic reflection sections across the Niushoushan-Luoshan Fault zone and map in detail the area within the fault zone. These data indicate that the Niushoushan-Luoshan Fault zone is a discrete fault zone. The fault zone can be subdivided into three parts: the south part,i.e.the Luoshan Fault,is characterized by positive flower structure,shown as remarkable right lateral strike-slip; in the middle segment,that is,the Niushoushan Fault,no active fault exists on the east flank of the Niushoushan,and this region is dominated by intensive folding; the north part,the Sanguankou Fault,is a left-lateral strike-slip fault. The discontinuity and segmentation feature of the Niushoushan-Luoshan Fault zone suggest different deformational styles in different locations of the fault zone associated with the process of northeastward propagation of the Tibetan plateau.

%U https://www.dzdz.ac.cn/EN/10.3969/j.issn.0253-4967.2013.02.001