Volcanogenic massive sulfide ore deposit Volcanogenic massive sulfide ore deposit Volcanogenic massive sulfide ore deposits, also known as VMS ore deposits, are a type of metal sulfide ore deposit, mainly copper-zinc which are associated with and created by volcanic-associated hydrothermal events in submarine environments. These deposits are also sometimes called volcanic-hosted massive sulfide (VHMS) deposits. The density generally is 4500 kg/m. They are predominantly stratiform accumulations of sulfide minerals that precipitate from hydrothermal fluids on or below the seafloor in a wide range of ancient and modern geological settings. In modern oceans they are synonymous with sulfurous plumes called black smokers. They occur within environments
Ore Mountains one overarching unit, the Saxon Highlands and Uplands. In addition, its internal divisions were changed. Former major unit 420 was grouped with the western part of major units 421 and 423 to form a new major unit, the Western Ore Mountains ("Westerzgebirge"), the eastern part of major units 421 and 423 became the Central Ore Mountains ("Mittelerzgebirge") and major units 422 and 424 became the Eastern Ore Mountains ("Osterzgebirge"). The current division therefore looks as follows: The geographic unit of the Southern Slopes of the Ore Mountains remains unchanged under the title of Southern Ore Mountains ("Süderzgebirge"). The climate of