摘要
用筛选法和悬浮法相结合的方法对采自西秦岭北缘断裂带东段和海原断裂带西段的天然断层泥进行了粒度分布和分形研究。研究结果表明 :这 2条断裂带断层泥粒度组成为粗粒级 (Φ <4 )含量高 ,细粒级 (Φ≥ 4 )含量低 ;断层泥分维值分别为 2 .594± 0 .12 2和 2 .6 54± 0 .112 ,分维上限分别为 2 cm和 1cm。
Based on the fault gouge samples collected from the east section of the fault in the northern edge of West Qinling and the west section of Haiyuan Fault,the grain size distribution and fractal characteristics of the fault gouge are studied by means of screening method and suspension method.The result shows that the grain size of fault gouge consists of two scales,coarse grain and fine grain,and the content of coarse grain is high and that of fine grain is low. The fractal dimentions (D) of the gouges on two faults are separately 2.594±0.122 and 2.654±0.112,and their upper limits occur at 2 cm and 1 cm.
出处
《内陆地震》
2000年第1期30-37,共8页
Inland Earthquake
基金
地震科学联合基金资助项目!(93116)
关键词
断层泥
粒度分布
西秦岭
北缘断裂带
海原断裂带
Fault gouge\ Fractal\ Grain size distribution\ West Qinling Northern edge Fault\ Haiyuan fault zone
