论文部分内容阅读
Preliminary studies have shown that REE geochemical characteristics are useful criteria todiscriminate the two types of granitic rocks in Jiangxi Province.They are also of significant indication ofmetallization.The principal REE geochemical indices are ΣREE,ΣCe/ΣY and δEu,as well as REE distributionpattern.Each of the two types of granitic rocks has a metallogenic evolutionary series of its own with asuccessive decrease in δEu.The application of REE geochemistry in the study of petrogenesis and ore genesis has been receivingincreasing attention.As will be shown in this paper,REE geochemical characteristics,especially ΣREE,ΣCe/ΣY,δEu and REE distribution pattern,are efficient indicators for distinguishing between the twoseries of granitic rocks in Jiangxi,and thus enable us to have a better understanding of the ore-formingprocesses in this region.
Preliminary studies have shown that REE geochemical characteristics are available criteria todiscriminate the two types of granitic rocks in Jiangxi Province. They are also significant indications ofmetallization.The principal REE geochemical indices are ΣREE, ΣCe / ΣY and δEu, as well as REE distributionpattern. Each of the two types of granitic rocks has a metallogenic evolutionary series of its own with asccessive decrease in δEu. The application of REE geochemistry in the study of petrogenesis and ore genesis has been receiving increasing attention. As will be shown in this paper, REE geochemical characteristics, especially ΣREE, ΣCe / ΣY, δEu and REE distribution pattern, are efficient indicators for distinguishing between the twoseries of granitic rocks in Jiangxi, and thus enable us to have a better understanding of the ore-forming processes in this region.