| | Journal (article/letter/editorial) | EarlyProterozoicVolcanogenie MassiveSulfideDepositsin Wisconsin' An Overview THEODORE A. DEMATTIES 10-353rd AvenueN...amphibolites, chertyiron-formations, and sericiteto quartz-sericite schists. These1880 to 1860 Ma metamorphic rocksareconcealed...volcanogeniemassivesulfidemineralizationin the Wisconsin FOul• potentiallyeconomicvolcanogenie(volcan...environmen- magmatic terrane. tal concerns,and the Bend deposit, discoveredin 1986, continuesto be evaluatedby...MassiveSulfideDepositsin Wisconsin andSharpeEnergyandResources. The Precambrian of northern Wisconsin has some Regionalmetamorphism | | | Journal (article/letter/editorial) | Volcanic Belt, northern Wisconsin, Michigan and east-central Minnesota, USA: Implications for future...LLC, 34898 University Ave, Cambridge, MN 55008, USA A R T I C L E I N F O A B S T R A C T Keywords:...Volcanic Belt (PVB) of northern Wisconsin, Michigan and east-central Minnesota, USA. These cycles are responsible...the discovery of the large Back Forty zinc-gold deposit in 2001, repeal of Wisconsin’s mining moratorium...rocks LiƩle Falls FormaƟon argillite, slate, peliƟc schist Archean rocks of the Superior Province Major Penokean |
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