摘要
以九嶷山地区ETM+遥感影像数据为信息源,通过信息提取与解译快速获取该区断裂构造。运用分形理论的盒维数法对断裂构造体系进行分形研究,结果表明,区内断裂构造在0.05～2.75km尺度范围内具有良好的自相似性和分形特征,总体分维值D=1.1155、R2=0.9964,分维值接近中国大地构造单元稳定区分维值;不同走向断裂分维值D在0.9184～1.0441间、R2介于0.9983～0.9996间,各分维值D不仅定量描述了各走向断裂分布的复杂性和构造演化的成熟度,而且还反映了断裂的成矿作用:NE向断裂分维值最大,D值在1.0441附近时主要表现为导矿构造;SN向断裂分维值次之,D在0.9870附近时主要表现为控矿构造;NW向断裂分维值偏小,D在0.9502附近时主要表现为含矿构造。
Based on the ETM+ data source in Jiuyi mountain area, the faults in the area are extracted rapidly through information extraction and interpretation. Applying the Box-Counting method of fractal to fault structures, the result shows that fault structures have self-smilarity and fractal character within the scale range of 0.05～2.75km.As the same time, fractal dimension value is 1.1155 for the whole area and 0.9184～1.0441 for different strike faults and the square of correlation coefficient is greater than 0.996. Fractal dimension value here is close to the stable region of overall tectonic units in China,it not only describes the complexity of the fault distribution and the maturity of tectonic evolution, but also reflects the role in process of mineralization: fractal dimension values access to 1.0441, the faults mainly being ore-transporting structures;fractal dimension values access to 0.9870, the faults mainly being ore-controlling structures;fractal dimension values access to 0.9502 ,the faults mainly being ore-hosting structures.
出处
《地质论评》
CAS
CSCD
北大核心
2012年第3期594-599,共6页
Geological Review
基金
中国地质调查局"南岭地区钨锡多金属矿找矿靶区优选与验证"(编号K201025)的成果
关键词
分形
分维值
遥感
九嶷山
断裂
fractal
fractal dimension value
remote sensing
Jiuyi Mountain
faults
