SECONDARY COPPER IODIDE IN TILL IN THE LOYTOSUO AREA, YLIKIIMINKI, FINLAND

被引：3

作者：

AARIO, R

PEURANIEMI, V

机构：

[1] Department of Geology, Oulu University

来源：

APPLIED GEOCHEMISTRY | 1990年 / 5卷 / 03期

基金：

芬兰科学院;

关键词：

D O I：

10.1016/0883-2927(90)90009-T

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：

Till geochemical studies were carried out in the Ylikiiminki area in northern Finland while prospecting for tungsten and sulphide ores. The area forms part of the Proterozoic schist belt of northern Ostrobothnia. Lodgement till was deposited on the bedrock surface in an earlier ice flow phase, followed during the later deglaciation by looser till types overlaid in succession by beach gravels and sands. A special postglacial type of Cu anomaly was found at Löytösuo, the nature of which was studied using partial extractability analyses and mineralogical investigations. Copper was found to be present in the form of both primary and secondary sulphides and CuI (marshite) was found as a rare mode of occurrence. The source of the I is possibly related to enrichment in algae in the Litorina phase of the Baltic Sea; in general the more iodine-rich soils occur within the sphere of this brackish water stage. © 1990.

引用

页码：347 / 355

页数：9

共 23 条

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