GEOLOGY AND GENESIS OF THE PROTEROZOIC MASSIVE SULFIDE DEPOSIT AT GARPENBERG, CENTRAL SWEDEN.

被引：0
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作者：
Vivallo, Waldo [1 ]
机构：
[1] Univ of Stockholm, Dep of Geology,, Stockholm, Swed, Univ of Stockholm, Dep of Geology, Stockholm, Swed
来源：
Economic geology Lancaster, Pa. | 1985年 / 80卷 / 01期
关键词：
GEOLOGY - ORE DEPOSITS - Theory - VOLCANOES;
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摘要：
The Garpenberg deposit of central Sweden is a metamorphosed, strata-bound Zn-Pb-Cu-Ag sulfide deposit intercalated in an early Proterozoic supracrustal sequence of felsic metavolcanics and subordinate metasedimentary rocks, which have been folded, metamorphosed, and intruded by synorogenic granitoids. The magmatism is calc-alkaline and most of the volcanic activity occurred as explosive submarine volcanism. The Garpenberg deposit is emplaced at the contact between metasedimentary and metavolcanic rocks and consists of 32 lens-shaped orebodies. The proposed volcanogenic origin, related to calc-alkaline magmatism, is supported by the morphology, wall-rock alteration, and ore mineralogy. The Garpenberg deposit is thought to have formed in an active continental margin setting rather than in an island arc. Refs.
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页码：17 / 32
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