georefid:2003-063130SEDIS Publication Catalogueana.macario@awi.dehttp://sedis.iodp.org/pub-catalogue/informationpointOfContact2011-06-23T00:00:00Zhttp://sedis.iodp.org/pub-catalogue/index.php?id=10.1130/G19716.1<gco:CharacterString>Contrasting evolution of hydrothermal fluids in the PACMANUS system, Manus Basin; the Sr and S isotope evidence</gco:CharacterString>2003-01-01publicationgeorefid:2003-063130doi:10.1130/G19716.1Roberts, S.University of Southampton, School of Ocean and Earth Science, Southampton, United KingdomauthorBach, W.Woods Hole Oceanographic Institution, United StatesauthorBinns, R. A.CSIRO Exploration and Mining, AustraliaauthorVanko, D. A.Towson University, United StatesauthorYeats, C. J.Scottish Universities Environmental Research Centre, United KingdomauthorTeagle, D. A. H.authorBlacklock, K.authorBlusztajn, J. S.authorBoyce, A. J.authorCooper, M. J.authorHolland, N.authorMcDonald, B.authorGeological Society of America (GSA), Boulder, CO, United StatespublisherdocumentHardcopyGeology (Boulder)31 (9)805-808Ocean Drilling Program (ODP) Leg 193 investigated two sites of hydrothermal activity along the crest of the Pual Ridge in the eastern Manus Basin. A site of low-temperature diffuse venting, Snowcap (Site 1188), and a high-temperature black smoker site, Roman Ruins (Site 1189), were drilled to depths of 386 and 206 m below seafloor (mbsf), respectively. Although the two sites are <1000 m apart, the (super 87) Sr/ (super 86) Sr and delta (super 34) S signatures of anhydrite recovered at both sites are very different. The data suggest a complex interplay among hydrothermal fluid, magmatic fluid, and seawater during alteration and mineralization of the PACMANUS (Papua New Guinea-Australia-Canada-Manus) system. These new results significantly expand the subsurface data on seafloor hydrothermal systems and may begin to explain the earliest processes of multistage mineralization and alteration history that typify ancient massive sulfide systems.completedIsotope geochemistryOceanographyalkaline earth metalsanhydriteBismarck Seablack smokersbrecciacoresfluid phasegeochemistrygeothermal systemshydrochemistryhydrothermal ventsisotope ratiosisotopesLeg 193Manus Basinmassive depositsmassive sulfide depositsmetallogenymetalsmetasomatismmineral deposits, genesismineralizationmodern analogsOcean Drilling ProgramODP Site 1188ODP Site 1189Pacific OceanPACMANUS FieldPual RidgeRoman Ruins FieldS-34/S-32sea waterSnowcap FieldSouth PacificSouthwest PacificSr-87/Sr-86stable isotopesstrontiumsubmarine volcanoessulfatessulfurveinsvolcanismvolcanoesvolcanogenic massive sulfide depositswall-rock alterationwater-rock interactionWest Pacificurn:org.iodp:exp:193urnlargerWorkCitationcampaignurn:org.iodp:exp:193:site:1188urnlargerWorkCitationstudyurn:org.iodp:exp:193urnlargerWorkCitationcampaignurn:org.iodp:exp:193:site:1189urnlargerWorkCitationstudyurn:org.iodp:exp:193urnlargerWorkCitationcampaignEnglishgeoscientificInformation151.4000151.4100-3.4400-3.4300