新疆阿尔泰地区矿床分布的多重分形分析

对新疆阿尔泰地区 175个热液金、铜、铅、锌、稀有金属矿床的研究表明 ,该区矿床的空间分布为多重分形分布。在 q=- 2～ 14范围内 ,标度指数为 - 5.4 915～ 12 .80 71,奇异指数 a( q)随 q值变化较大 ,为 0 .92 4 8～ 2 .2 865,分维谱具单峰曲线特征。q=0时 ,在 1～ 150 km尺度范围内出现二个分形关系 ,在 1～ 16km尺度范围内 D0 值为 0 .2 3,在 16～ 150 km尺度范围内 D0 值为 1.51。导致该区矿床多重分形分布的主要原因是在不同尺度下矿床的形成控制机理的不同和矿床的勘探研究程度较低 ,该区还有较大的找矿前景。

MULTIFRACTAL ANALYSIS OF ORE DEPOSITS DISTRIBUTION IN ALTY, XINJIANG, CHINA

The analysis of the spatial distribution of 175 hydrothermal Au, Cu, Pb, Zn, and race elements deposits in the Alty region, Xinjiang, China, reveals multifractal distribution. Within q=-2～14, the mass exponents are from 5.4951 to 12.8071, the singularity exponents vary from 0.9248 to 2.2865 with q, and multifractal spectrum is single peak. With q=0, two fractal relationships occur within the scale ranges from 1 to 150 km, in which the fractal dimension D 0 is 0.23 within the ranges of 1 to 16 km and 1.59 within the ranges of 16 to 150 km. The different controlling mechanism of ore forming under different scales and undiscovered deposits caused multifractal distribution of ore deposits. It is proposed that there is a good exploration prospecting in the Alty regions.