Henley, RichardBerger, Byron2015-12-130012-8252http://hdl.handle.net/1885/84706Chemical data for fumaroles and for atmospheric gas and ash plumes from active arc volcanoes provide glimpses of the rates of release of metal and metalloids, such as Tl and Cd, from shallow and mid-crust magmas. Data from copper deposits formed in ancienKeywords: copper; drinking water; fumarole; gold; magma; molybdenum; permeability; plume; porphyry; silver; volcanic ash; volcanic eruption; volcano; water pollution Fumarole; Gold; Magmatic gas; Plume; Porphyry copper201310.1016/j.earscirev.2013.07.0072016-02-24