新疆东准噶尔地区断裂的多重分形研究  

STUDY ON MULTIFRACTAL CHARACTERISTICS OFFAULTS IN EAST JUNGGAR

作　　者：王喜生[1] 杨永华[2] 

机构地区：[1]太原理工大学,山西太原030024 [2]中国地质大学,北京100083

出　　处：《大地构造与成矿学》2000年第2期182-188,共7页Geotectonica et Metallogenia

基　　金：国家305项目!(85-902-03)部分成果

摘　　要：结合东准噶尔地区强应变构造带的空间展布情况和断裂的空间分布特征 ,用多重分形模型测算了各带的多重分维值。研究结果表明 :强应变构造带在不同尺度上具有自相似性 ;断裂的空间分布为多重分形结构 ,断裂的演化有从复杂几何结构的次级断裂组合向单一连续的大断裂过渡而分维值逐渐减小的趋势 ;不同的大地构造单元有不同的分维值 ,而且有靠近板块缝合带 (或海沟 )分维值减小、远离板块缝合带 (或海沟 )According to the figure of shear zones and fault distribution in East Junggar, self-similarity of fault spatial distribution is examined by using multifractal modeling and multifractal dimensions in seven shear zones are calculated respectively.The results show that shear zones at different scales have self-similarity and multifractal structure.There are the trends that the evolution of faults is from a combination of complex and secondary faults to an simple,successive and primary fault.Different tectonic units have different fractal dimension values.The magnitude of the fractal dimension values of fault systems reflects the complexity of faults and their tectonic activity.

关 键 词：多重分形 分维 东准噶尔地区 新疆 断裂 

分 类 号：P542.3[天文地球—构造地质学]