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水系重砂测量在区域地质测量中广泛使用并取得良好效果,然重砂矿物在水系沉积物中分布模式尚在探讨之中,有人视作遵循正态分布,也有人提出服从泊松(Poisson)分布。编制成果图传统方法有圈法(四分法)、符号法、带法和等值法等。圈定有用矿物异常区中将重砂矿物本身特点与地质、矿产、构造及地貌等因素综合考虑之,故圈定的异常形状、范围受人为因素影响较大。现据笔者工作中体会提出加权法制图,抛砖引玉,使之完善。
However, the distribution pattern of heavy sand minerals in sediments of water system is still under discussion. Some people regard it as following the normal distribution and others have also proposed that Poisson obey Poisson, distributed. The preparation of the results of the traditional methods of the circle method (quadruple), symbolic method, band method and equivalence method. Delineating the abnormal area of useful minerals will be heavy sand mineral characteristics and geology, mineral resources, structure and geomorphology and other factors into account, it delineated the abnormal shape, the scope of the greater impact by human factors. According to the author’s work experience appreciate the weight of legal system map, initiate, make it perfect.