02379oam 2200565 a 450 991068972230332120041005153131.0(CKB)5470000002332869(OCoLC)42838287ocm42838287(OCoLC)995470000002332869(EXLCZ)99547000000233286920011121d1999 ua 0enguo||||||||txtrdacontentcrdamediacdrdacarrierA geological and geophysical setting of the gold-silver vein system of Unga Island, southwestern Alaska[electronic resource] /edited by James R. RiehleVersion 1.3.Menlo Park, CA :U.S. Geological Survey ;[Denver, CO] :USGS Information Services (Open-File Report Sales),1999.1 CD-ROM color ;4 3/4 inOpen-file report ;99-136Title from title screen.Shipping list no.: 2000-0010-E.Version history: 1.0, online, June 12, 1999. Version 1.1 -- 1.3, June 21 -- Sept. 1999, added online enhancements. CD added Sept. 1999.0-607-92654-6 Core of publication is new geologic map at scale of 1:63,360 and aeromagnetic and electromagnetic survey data acquired by industry over area of mineralization. Goal is deciphering the relations among volcanism, tectonism, and mineralization.Geological and geophysical study of the gold-silver vein system of Unga Island, southwestern AlaskaGold-silver vein systems, Unga Island, southwestern AlaskaGold oresGeologyAlaskaUnga IslandSilver oresGeologyAlaskaUnga IslandGeologyAlaskaUnga IslandMapsMagnetic prospectingAlaskaUnga IslandMaps.lcgftGold oresGeologySilver oresGeologyGeologyMagnetic prospecting553.4/09798Riehle J. R1381581Geological Survey (U.S.)GISGISDLCGPOBOOK9910689722303321A geological and geophysical setting of the gold-silver vein system of Unga Island, southwestern Alaska3424318UNINA