THE GEOCHEMISTRY OF MAFIC METAVOLCANICS - IMPLICATIONS FOR THE ORIGIN OF THE DEVONIAN MASSIVE SULFIDE DEPOSITS AT ZLATE-HORY, CZECHOSLOVAKIA

被引：19
|
作者：
PATOCKA, F
机构：
[1] Czechoslovakian Acad of Sciences, Prague, Czech, Czechoslovakian Acad of Sciences, Prague, Czech
来源：
MINERALIUM DEPOSITA | 1987年 / 22卷 / 02期
关键词：
COPPER DEPOSITS - GEOCHEMISTRY;
D O I：
10.1007/BF00204692
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：
Mafic metavolcanic rocks in the area of the Zlate Hory massive sulfide deposits are interpreted as convergent plate-margin basalts and basaltic andesites metamorphosed to the greenschist facies. According to the major- and trace-element compositions the metabasites exhibit island-arc tholeiitic to low-K, calc-alkaline composition. Approximately 50% of samples of mafic metavolcanics studied have a salient negative anomaly of Ce in chondrite-normalized REE patterns. The Ce-depleted greenschists are thought to represent hydrothermally altered equivalents of metabasites of island-arc tholeiitic composition. The alteration was accompanied by the sulfide mineralization.
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收藏
页码：144 / 150
页数：7
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