georefid:2007-051492georefid:2007-051482SEDIS Publication Catalogue

ana.macario@awi.de

http://sedis.iodp.org/pub-catalogue/informationpointOfContact2011-06-23T00:00:00Zhttp://sedis.iodp.org/pub-catalogue/index.php?id=10.2973/odp.proc.sr.193.206.20062007-01-01publicationgeorefid:2007-051492doi:10.2973/odp.proc.sr.193.206.2006Binns, Raymond A.CSIRO, Division of Exploration and Mining, North Ryde, N.S.W., AustraliaauthorTexas A&M University, Ocean Drilling Program, College Station, TX, United StatespublisherdocumentDigitalIn: Barriga, Fernando J. A. S., Binns, Raymond A., Miller, D. Jay, Asada, Ryuji, Bach, Wolfgang, Bartetzko, Anne C. M., Benning, Liane G., Bjerkgard, Terje, Christiansen, Lizet B., Elswick, Erika R., Findlay, Robert, Iturrino, Gerardo J., Kimura, Hiroyuki, Kulange, John B., Lackschewitz, Klas S., Lee, Sang-Mook, Masta, Andrew, Paulick, Holger, Pinto, Alvaro M., Roberts, Stephen, Scott, Steven D., Vanko, David A., Warden, Ian, Yeats, Christopher J., Proceedings of the Ocean Drilling Program; scientific results; anatomy of an active felsic-hosted hydrothermal system, eastern Manus Basin; covering Leg 193 of the cruises of the drilling vessel JOIDES Resolution; Apra Harbor, Guam, to Townsville, Australia; Sites 1188-1191; 7 November 2000-3 January 2001193Chemical and isotopic data for rare massive and semimassive sulfide samples cored at Site 1189 (Roman Ruins, PACMANUS) suggest their genetic relationship with sulfide chimneys at the seafloor. Sand collected from the hammer drill after commencement of Hole 1189B indicates that at least the lower section of the cased interval was occupied by material similar to the stockwork zone cored from 31 to approximately 100 meters below seafloor (mbsf) in this hole, but with increased content of barite, sphalerite, and lead-bearing minerals. Fractional crystallization of ascending hydrothermal fluid involving early precipitation of pyrite may explain vertical mineralogical and chemical zoning within the stockwork conduit and the high base and precious metal contents of Roman Ruins chimneys. A mineralized volcaniclastic unit cored deep in Hole 1189A possibly represents the lateral fringe of the conduit system. Lead isotope ratios in the sulfides differ slightly but significantly from those of fresh lavas from Pual Ridge, implying that at least some of the Pb within the Roman Ruins hydrothermal system derived from a deeper, more radiogenic source than the enclosing altered volcanic rocks.completedEconomic geology, geology of ore depositsGeochemistry of rocks, soils, and sedimentsBismarck Seachimneysfractional crystallizationgeochemistryhydrochemistryhydrothermal conditionsigneous rocksisotopesLeg 193Manus Basinmassive depositsmassive sulfide depositsmetallogenymineral compositionmineral deposits, genesismineralizationOcean Drilling Programocean floorsODP Site 1189Pacific OceanPACMANUS hydrothermal fieldRoman Ruins hydrothermal fieldSouth PacificSouthwest Pacificstockwork depositssulfidesvolcanic rocksvolcaniclasticsWest Pacificurn:org.iodp:exp:193urnlargerWorkCitationcampaignurn:org.iodp:exp:193:site:1189urnlargerWorkCitationstudyurn:org.iodp:exp:193urnlargerWorkCitationcampaignEnglishgeoscientificInformation151.4000151.4100-3.4300-3.4300Data report; available only on CD-ROM in PDF format and on the Web in PDF or HTMLapplication/pdfunknownSEDIS Publication Catalogue

ana.macario@awi.de

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