 | | Journal (article/letter/editorial) | | Seafloor Massive Sulfide Mounds at the TAG, Mid-Atlantic Ridge Berit Lehrmann 1, *, Iain J. Stobbs 2 ...located in the Trans-Atlantic Geotraverse (TAG) hydrothermal area of the Mid-Atlantic Ridge were drilled...remobilized early in the mound evolution and forms either a layer in the upper part of the mound or has been totally...seafloor massive sulfides; drilling; TAG hydrothermal area; Mid-Atlantic Ridge 1. Introduction Since the discovery...discovery of the first hydrothermal venting at the GalĆ”pagos Rift in 1977 [1], the number of discovered |  | Grant, Hannah L.J., Hannington, Mark D., Petersen, Sven, Frische, Matthias, Fuchs, Sebastian H. (2018) Constraints on the behavior of trace elements in the actively-forming TAG deposit, Mid-Atlantic Ridge, based on LA-ICP-MS analyses of pyrite. Chemical Geology, 498. 45-71 doi:10.1016/j.chemgeo.2018.08.019 | Journal (article/letter/editorial) | | trace elements in the activelyforming TAG deposit, Mid-Atlantic Ridge, based on LA-ICP-MS analyses of pyrite...trace elements in the actively-forming TAG deposit, Mid-Atlantic Ridge, based on LA-ICP-MS analyses of pyrite...trace elements in the actively-forming TAG deposit, Mid-Atlantic Ridge, based on LA-ICP-MS analyses of pyrite...Sebastian H. Fuchs1 GEOMAR Helmholtz Center for Ocean Research Kiel, Wischhofstrasse 1-3, 24148 Kiel,...University of Ottawa, Advanced Research RI SC Complex, 25 Templeton Street, Ottawa, K1N 6N5, Canada, |  | | Journal (article/letter/editorial) | | presently forming VMS deposit: TAG hydrothermal mound, Mid-Atlantic Ridge, 26Ā°Ā°N Received: 16 November...drilling of the active TAG hydrothermal mound at 26Ā°N on the Mid-Atlantic Ridge provided the Ā®rst insights...massive sulĀ®de (VMS) deposit on a sediment-free mid-ocean ridge. SulĀ®de precipitation at this site started...200-m diameter, 50-m-high pyritic mound and a siliciĀ®ed stockwork complex containing approximately 3.9 million...seaĀÆoor. The periodic release of high-temperature hydrothermal ĀÆuids at the same location for several thousand |  | | Journal (article/letter/editorial) | | subseafloor root zone of the TAG hydrothermal system, 268 N Mid-Atlantic Ridge Dionysis I. Foustoukos*, W...applicable to the Trans-Atlantic Geo-Traverse (TAG) hydrothermal system at 268 N, Mid-Atlantic Ridge. The mag...form this mineral assemblage during subseafloor hydrothermal alteration, however, requires elevated fluid...the low H2S(aq) and mFe / mCu ratios observed at TAG vent fluids are consistent with constraints imposed... Available chemical data confirm that the TAG hydrothermal system has experienced elevated fluid / rock |  | Fallon, Emily, Frische, Matthias, Petersen, Sven, Brooker, Richard, Scott, Thomas (2019) Geological, Mineralogical and Textural Impacts on the Distribution of Environmentally Toxic Trace Elements in Seafloor Massive Sulfide Occurrences. Minerals, 9 (3) 162 doi:10.3390/min9030162 | Journal (article/letter/editorial) | | them. In this study, SMS samples from seven hydrothermal fields from various tectonic settings were investigated...potential toxicity. Deposits containing abundant pyrrhotite (high-temperature deposits) and Fe-rich sphalerite...[25ā29], but also the surrounding deep or coastal ocean including background fauna (soft sediment benthos)...our lack of understanding of these unique and complex ecosystems. Whilst it has been demonstrated that...[44,49], with a natural mineral ore containing complex mixtures of metals with a range of oxidation states |  | | Journal (article/letter/editorial) | | Material from the Lokiās Castle Hydrothermal Vent on the Mohnās Ridge Ben Snook 1, *, Kristian Drivenes... Abstract: Lokiās Castle on the Arctic Mid-Ocean Ridge (AMOR) is an area of possible seafloor massive...to characterise mineralised material from a hydrothermal vent system on the AMOR in detail for the first...microscopy, are pyrite and marcasite with minor pyrrhotite and galena, but multiple samples from the Lokiās...Keywords: Seafloor sulphides; Norway; Arctic Mid Ocean Ridge; copper; zinc; mineralogy; ICP-ES/ MS; XRD; |  | | Journal (article/letter/editorial) | | influences on concentrations of trace metals in hydrothermal fluids SIMONE METZ and JOHN H. TREFRY* Department...metals in hydrothermal solutions from the southern Juan de Fuca Ridge (SJFR) and the TAG Hydrothermal Field...Field on the Mid-Atlantic Ridge are influenced by the combined effects of source rock composition, brineāseawater...brineāseawater mixing and complex interplay among various metals and minerals deposited and remineralized...however, concentrations of Cu in 363Ā°C fluids at the TAG site are well above values determined from seawater/basalt |  | | Journal (article/letter/editorial) | | Smoker Smoke at the TAG and Broken Spur Hydrothermal Fields, Mid-Atlantic Ridge V. Yu. Rusakov Vernadsky...presents newly obtained data on the fluxes of hydrothermalāsedimentary material collected with sedimentation...the bottoms of black smokers at the TAG and Broken Spur hydrothermal fields and reports the results of...āmatureā (having an age of 40ā50 ka) hydrothermal spring at the TAG field contains 40% Fe hydroxides, in contrast...to the material of a spring at the Broken Spur field (age <1000 yr) whose material is dominated by sulfides |  | | Report (issue) | | Kasahara, Pavel Izbekov, and Johnathan Lees (Eds.) 173 Ocean Circulation: Mechanisms and ImpactsāPast and Future...Ellen R. Stofan, and Thomas E. Cravens (Eds.) 177 Ocean Modeling in an Eddying Regime Matthew Hecht and...Hasumi (Eds.) 178 Magma to Microbe: Modeling Hydrothermal Processes at Oceanic Spreading Centers Robert... S. Reeve, and Lee D. Slater (Eds.) 185 Indian Ocean Biogeochemical Processes and Ecological Variability...John Gash, and Pedro Silva Dias (Eds.) 187 Surface OceanāLower Atmosphere Processes Corinne Le QuĆØrĆØ and |  | | Journal (article/letter/editorial) | | Seafloor Massive Sulfide Deposits on an Arctic Mid-Ocean Ridge: Application of grade and tonnage models Cyril...Seafloor Massive Sulfide Deposits on an Arctic Mid-Ocean Ridge: Application of grade and tonnage models, Ore...Seafloor Massive Sulfide Deposits on an Arctic Mid-Ocean Ridge: Application of grade and tonnage models Cyril...48 56 Keywords seafloor massive sulfide, mid-ocean ridge, resource assessment, grade, tonnage Abstract...territorial waters on the deep ocean floor of the Arctic region, i.e. the Mohns Ridge (71-73Ā°N). Among the variety |  | Negishi, Hironori, Arai, Shoji, Yurimoto, Hisayoshi, Ito, Shoichi, Ishimaru, Satoko, Tamura, Akihiro, Akizawa, Norikatsu (2013) Sulfide-rich dunite within a thick Moho transition zone of the northern Oman ophiolite: Implications for the origin of Cyprus-type sulfide deposits. Lithos, 164. 22-35 doi:10.1016/j.lithos.2012.11.024 | Journal (article/letter/editorial) | | Cyprus-type massive sulļ¬de deposits near the surface. Field observations suggest that the sulļ¬de-rich MTZ dunites...composed of homogeneous pyrrhotite and vermicular intergrowth of pyrrhotite and pentlandite. Sulļ¬de inclusions...inclusions in clinopyroxene comprise pyrrhotite with pentlandite blebs, free of magnetite. Olivines in...segregated Ni-rich sulļ¬de melts. The pentlanditeāpyrrhotite intergrowth was formed by subsolidus exsolution...and MORB-related sulļ¬des, such as TAG (Trans-Atlantic Geotraverse) deposits. One of the Cyprus type massive |  | Keith, Manuel, HƤckel, Florian, Haase, Karsten M., Schwarz-Schampera, Ulrich, Klemd, Reiner (2016) Trace element systematics of pyrite from submarine hydrothermal vents. Ore Geology Reviews, 72. 728-745 doi:10.1016/j.oregeorev.2015.07.012 | Journal (article/letter/editorial) | | element systematics of pyrite from submarine hydrothermal vents Manuel Keith a,ā, Florian HƤckel b, Karsten...elements Hydrothermal sulļ¬des Laser Ablation ICPāMS VHMS a b s t r a c t Submarine hydrothermal sulļ¬de...sulļ¬de ores occur at mid-ocean ridges, intra-oceanic arcs and in back-arc basins associated with host rocks...submarine hydrothermal vent ļ¬elds at different plate-tectonic settings including the Indian and Mid-Atlantic...nano-particles. Bismuth is enriched in pyrite from hydrothermal systems that contain a sedimentary component |  | Mills, R.A., Thomson, J., Elderfield, H., Hinton, R.W., Hyslop, E. (1994) Uranium enrichment in metalliferous sediments from the Mid-Atlantic Ridge. Earth and Planetary Science Letters, 124 (1) 35-47 doi:10.1016/0012-821x(94)00083-2 | Journal (article/letter/editorial) | | enrichment in metalliferous sediments from the Mid-Atlantic Ridge R.A. Mills a, J. Thomson b, H. Elderfield...Previous studies of metal-rich sediments at mid-ocean ridge spreading centres have suggested that U/Fe...from site to site. A suite of cores from the Mid-Atlantic Ridge has been analysed for U and Fe content and...controlling this enrichment. U/Fe ratios in fully oxidised TAG sediments are constant and approximately an order...sediments have been observed throughout the mid-ocean ridge system [l-4], provide an areally important |  | Petersen, S., Kuhn, K., Kuhn, T., Augustin, N., HĆ©kinian, R., Franz, L., Borowski, C. (2009) The geological setting of the ultramafic-hosted Logatchev hydrothermal field (14Ā°45ā²N, Mid-Atlantic Ridge) and its influence on massive sulfide formation. Lithos, 112 (1) 40-56 doi:10.1016/j.lithos.2009.02.008 | Journal (article/letter/editorial) | | ultramaļ¬c-hosted Logatchev hydrothermal ļ¬eld (14Ā°45ā²N, Mid-Atlantic Ridge) and its inļ¬uence on massive...2009 Keywords: Ultramaļ¬c-hosted Hydrothermal system Mid-Atlantic Ridge Massive sulļ¬des Petrology a b...The Logatchev hydrothermal ļ¬eld (14Ā°45ā²N on the MAR) is one of a few submarine hydrothermal systems associated...previously been linked to detachment faulting and core complex formation. Geological mapping during various ROV...shallow drilling reveal a structural control of hydrothermal activity as well as its location in a debris |  | | Journal (article/letter/editorial) | | Accepted Manuscript Oxidative dissolution of hydrothermal mixed-sulphide ore: An assessment of current...Brooker, T.B. Scott, Oxidative dissolution of hydrothermal mixed-sulphide ore: An assessment of current...journal pertain. Oxidative dissolution of hydrothermal mixed-sulphide ore: An assessment of current...focus on exploiting deposits associated with hydrothermal vents that have been inactive for some time...their mineralogy (those containing significant pyrrhotite, marcasite, galena and secondary copper sulphides) |  | | Journal (article/letter/editorial) | | accepted 30 October 2018 The potential for mining hydrothermal mineral deposits on the seafloor, such as seafloor...with the help of multi-beam data of a known hydrothermal vent site. KEY WORDS: Play analysis, Prospect...INTRODUCTION The discovery of hydrothermal vent fields along mid-ocean ridges (MORs) (Beaulieu et al...al. 2013) has led to the emergence of ocean exploration and development companies who are working to exploit...(SMS). Such interests have led to exploring deep ocean floors (most SMS deposits are within 2ā3 km depth |  | | Report (volume) | | Hydrothermal Vents and Processes Geological Society Special Publications Series Editor A.J. FLEET... GEOLOGICAL SOCIETY SPECIAL PUBLICATION NO. 87 Hydrothermal Vents and Processes EDITED BY L. M. P A R...BAKER,E. T. & KLINKHAMMER,G. Regional setting of hydrothermal activity 3 KRASNOV,S. G., POROSHINA,I. M....G. A. Geological setting of high-temperature hydrothermal activity and massive sulphide formation on fast-...ecology of the Broken Spur hydrothermal vent field: 29~ on the Mid-Atlantic Ridge 33 KRASNOV, S. G., CHERKASHEV |  | Li, Bing, Shi, Xuefa, Li, Chuanshun, Wang, Jixin, Pei, Yanliang, Ye, Jun (2016) Lead, Sulfur, and Oxygen Isotope Systematics in Hydrothermal Precipitates from the 14Ā°S Hydrothermal Field, South Mid-Atlantic Ridge. Resource Geology, 66 (3) 274-285 doi:10.1111/rge.12101 | Journal (article/letter/editorial) | | Systematics in Hydrothermal Precipitates from the 14Ā°S Hydrothermal Field, South Mid-Atlantic Ridge Bing LI...between the South Mid-Atlantic Ridge (SMAR) and the Cardno fracture zone, the 14Ā°S hydrothermal ļ¬eld, with its...corner-related hydrothermal mineralization. S, Pb, and O isotopes were measured in hydrothermal sulļ¬de samples...between downward-penetrating seawater and upward hydrothermal end-member ļ¬uids and determine the various mineralization...mineralization types. Keywords: 14Ā°S hydrothermal ļ¬eld, crust permeability, O isotope, Pb isotope, S |  | Bailie, Russell, Gutzmer, Jens, Strauss, Harald, StĆ¼eken, Eva, McClung, Craig (2010) Sulfur isotope characteristics of metamorphosed ZnāCu volcanogenic massive sulfides in the Areachap Group, Northern Cape Province, South Africa. Mineralium Deposita, 45 (5) 481-496 doi:10.1007/s00126-010-0285-8 | Journal (article/letter/editorial) | | associated with modern volcanic arcs and unsedimented mid-ocean ridges. It is thus concluded that profound recrystallization...stratabound and are composed of pyrite, with minor pyrrhotite, marcasite, sphalerite, and chalcopyrite; they...all cases, accompanied by variable amounts of pyrrhotite (Fig. 5), and retrograde marcasite. Chalcopyrite...crystallized metamorphosed sulfide grains of pyrite, pyrrhotite, chalcopyrite, and sphalerite were selected;...such as sphalerite, galena, chalcopyrite, and pyrrhotite, but less so in more brittle phases, such as |  | Lee, Su Young, Watanabe, Makoto, Hoshino, Kenichi, Oomori, Tamotsu, Fujioka, Kantaro, Rona, Peter A. (2002) First report of linnaeite (Co3S4) and millerite (NiS) from active submarine hydrothermal deposits: Rainbow hydrothermal field, Mid-Atlantic Ridge at 36Ė14'N. Neues Jahrbuch fĆ¼r Mineralogie - Monatshefte, 2002 (1) 1-21 doi:10.1127/0028-3649/2002/2002-0001 | Journal (article/letter/editorial) | | active submarine hydrothermal deposits: Rainbow hydrothermal field, Mid-Atlantic Ridge at 36Ć 14Ā¢ N Su...active submarine hydrothermal deposits: Rainbow hydrothermal field, Mid-Atlantic Ridge at 36Ć 14Ā¢ N. ā...seafloor hydrothermal deposit at the Rainbow hydrothermal field at 36Ć 14Ā¢ N on the Mid-Atlantic Ridge. All...high temperature hydrothermal circulation through ultramafic rocks. The hydrothermal setting of the Rainbow...Rainbow hydrothermal field can be compared with that of the Logatchev hydrothermal field at 14Ć 45Ā¢ N |  | | Journal (article/letter/editorial) | | 65ā75 Geochemistry of a hydrothermal sediment core from the OBS vent-field, 218N East Pacific Rise C...report a geochemical investigation of near-vent hydrothermal sediment from the East Pacific Rise, collected...the Mid-Atlantic Ridge. Further studies are required to fully characterise near-field hydrothermal sediments...from the Mid-Atlantic Ridge as well as ridge-flank data from the EPR and Juan de Fuca Ridge. Compared...Compared to ridge-flank sediments the near field sediments exhibit high ratios of FerMn, CurFe and ZnrFe. Unlike |  | | Journal (article/letter/editorial) | | neutrally buoyant plume above the TAG vent field, 26 degrees N, Mid-Atlantic Ridge M. D. RUDNICKI and H. ELDERFIELD...neutrally buoyant plume above the TAG vent field (26 degrees N, Mid-Atlantic Ridge) have been calculated from...used in a conceptual model of the chemistry of the TAG plume. The average dilution at which iron oxyhydroxide...neutrally buoyant hydrothermal plume particulate samples collected above the T A G vent field. The model is...water, a pattern which has also been found in those TAG sediments formed from neutrally buoyant plume fallout |  | | Journal (article/letter/editorial) | | Accepted: 6 May 2019 # The Author(s) 2019 Abstract Hydrothermal fluids on the modern seafloor are important... in part reflecting strong buffering of the hydrothermal fluids by their host rocks. Geochemical reaction-path...modeling shows that in most cases the investigated hydrothermal fluids are undersaturated with gold and silver...Precipitation of gold during conductive cooling of mid-ocean ridge black smoker (MOR) fluids occurs at low temperatures...ultramafic-dominated (UM) systems, the strongly reduced hydrothermal fluids promote the deposition of gold at higher |  | | Report (chapter) | | studies of vent fluids from the TAG and MARK sites (1986, 1990) Mid-Atlantic Ridge: a new solution chemistry...of vent fluids from the TAG and M A R K sites (1986, 1990) Mid-Atlantic Ridge: a new solution chemistry...USA Abstract: The hot springs at TAG and MARK on the Mid-Atlantic Ridge have been resampled after an interval...those on the faster spreading ridges of the Pacific, TAG has pronounced differences. The depletion in B and...the recharge path that is unique to TAG. In addition, the TAG mound contains a large cluster of sphalerite-rich |  | Melekestseva, I. Yu., Kotlyarov, V. A., Khvorov, P. V., Ivanov, V. N., Beltenev, V. E., Dobretsova, I. G. (2010) Noble-metal mineralization in the Semenov-2 hydrothermal field (13Ā°31ā²N), mid-atlantic ridge. Geology of Ore Deposits, 52 (8) 800-810 doi:10.1134/s1075701510080118 | Journal (article/letter/editorial) | | Mineralization in the Semenov2 Hydrothermal Field (13Ā°31ā²N), MidAtlantic Ridge I. Yu. Melekestsevaa, V. A...copperāzinc ore of the Semenov2 hydrothermal field, a site in the Semenov hydrothermal cluster discovered in 2007...pyrite, and covellite are auxiliary; and galena, pyrrhotite, native gold, silver telluride, barite, and aragonite...only basalts have been dredged from the Semenov2 field, but anomalous gold and silver concentrations suggest...were found 1.5 km westward, in the Semenov1 hydrothermal field. Mineral assemblage and morphology of gold |
|
