摘要
地球化学异常下限的确定,在矿产勘查和资源预测中占有十分重要的地位。传统计算地球化学异常下限的方法,要求数据服从正态分布或对数正态分布,而且存在计算依据不充分的问题。这里在研究背景和异常关系的基础上,提出了一种求地球化学异常下限的新方法,即含量排列法。该方法不要求数据服从正态分布或对数正态分布,直接用原始数据求异常下限,方法简便。用此方法对广东始兴地区化探数据进行处理,取得了较好的效果。
The calculating methods of geochemical thresholds are very important in mineral exploration and resource prediction. The traditional threshold methods are necessary for variables to conform to normal or lognormal distribution, and they have theoretic limitation. In this paper, a new method is presented by studying the relation between geochemical background and anomaly. There is no requirement for the method that the distribution of the variables must be normal or lognormal. The results from dealing with the data of 1∶50000 hydrographic deposits show that the method is efficient.
出处
《物探化探计算技术》
CAS
CSCD
2009年第2期154-157,共4页
Computing Techniques For Geophysical and Geochemical Exploration
基金
广东始兴地区矿产远景调查项目(矿调[2005]12-12)
关键词
异常下限
含量分布
背景
异常
threshold
content distribution
background
anomaly
