A SIMPLIFIED STATISTICAL TREATMENT OF GEOCHEMICAL DATA BY GRAPHICAL REPRESENTATION

被引：195

作者：

LEPELTIER, C

机构：

[1] United Nations Mineral Survey, Guatemala City

来源：

ECONOMIC GEOLOGY | 1969年 / 64卷 / 05期

关键词：

D O I：

10.2113/gsecongeo.64.5.538

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

In the course of a mineral exploation sponsored by the United Nations Development Programme in two selected zones of Guatemala, a stream sediment reconnaissance was carried out, and graphical methods of interpretation were attempted in the search for a simplified statistical treatment of about 25,000 geochemical results. The data were grouped by drainage and lithological units, and the frequency distributions of the abundance of Cu, Pb, Zn and Mo were studied in the form of cumulative frequency curves. The four elements appear to be approximately lognormally distributed. Background, coefficients of deviation and threshold levels were graphically estimated. Examples are given of simple and complex populations. Mineral associations were studied by correlation diagrams. © 1969 Society of Economic Geologists, Inc.

引用

页码：538 / +

页数：1