 | | 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 Galápagos Rift in 1977 [1], the number of discovered |  | Murton, Bramley J., Lehrmann, Berit, Dutrieux, Adeline M., Martins, Sofia, de la Iglesia, Alba Gil, Stobbs, Iain J., Barriga, Fernando J.A.S., Bialas, Jörg, Dannowski, Anke, Vardy, Mark E., North, Laurence J., Yeo, Isobel A.L.M., Lusty, Paul A.J., Petersen, Sven (2019) Geological fate of seafloor massive sulphides at the TAG hydrothermal field (Mid-Atlantic Ridge) Ore Geology Reviews, 107. 903-925 doi:10.1016/j.oregeorev.2019.03.005 | Journal (article/letter/editorial) | | seafloor massive sulphides at the tag hydrothermal field (midatlantic ridge) Bramley J. Murton, Berit Lehrmann...seafloor massive sulphides at the tag hydrothermal field (mid-atlantic ridge), Ore Geology Reviews (2019)...SEAFLOOR MASSIVE SULPHIDES AT THE TAG 3 HYDROTHERMAL FIELD (MID-ATLANTIC RIDGE) 4 Bramley J. Murton 1*,...fbarriga@fc.ul.pt 4 GEOMAR Helmholtz Center for Ocean Research Kiel, Wischhofstrasse 1-3, 24148 ...spreading ridge. Our approach involved two 33 research cruises in the summer of 2016 to the TAG hydrothermal |  | | Report (chapter) | | 25, 2015 Hydrothermal deposits and metalliferous sediments from TAG, 26~ Mid-Atlantic Ridge R A C H E...Abstract: The Trans-Atlantic Geotraverse (TAG) hydrothermal site at 26~ on the Mid-Atlantic Ridge has been...of many studies since the early 1970s. The hydrothermal field includes a wide variety of deposits ranging...different styles of venting and the evolution of the hydrothermal system over time. Metalliferous sediments in...mass wasting of mound features and fall out of plume particulates. The active TAG mound was drilled by |  | Teagle, Damon A.H, Alt, Jeffrey C, Chiba, Hitoshi, Humphris, Susan E, Halliday, Alex N (1998) Strontium and oxygen isotopic constraints on fluid mixing, alteration and mineralization in the TAG hydrothermal deposit. Chemical Geology, 149 (1) 1-24 doi:10.1016/s0009-2541(98)00030-8 | Journal (article/letter/editorial) | | mixing, alteration and mineralization in the TAG hydrothermal deposit Damon A.H. Teagle a a,) , Jeffrey...recovered from the Trans-Atlantic Geotraverse ŽTAG. hydrothermal mound during Leg 158 of the Ocean Drilling Program...mineralization within an active hydrothermal deposit. Fresh Mid-Ocean Ridge Basalt ŽMORB., with a 87Srr86...87Srr86 Sr of 0.7026, from the basement beneath the TAG mound was altered at both low and high temperatures...Pillow breccias occurring beneath the margins of the mound are locally recrystallized to chlorite by interaction |  | Milinovic, Jelena, Dias, Ágata Alveirinho, Janeiro, Ana I., Pereira, Manuel F. C., Martins, Sofia, Petersen, Sven, Barriga, Fernando J. A. S. (2020) XRD Identification of Ore Minerals during Cruises: Refinement of Extraction Procedure with Sodium Acetate Buffer. Minerals, 10 (2) 160 doi:10.3390/min10020160 | Journal (article/letter/editorial) | | Portugal; mfcp@ist.utl.pt GEOMAR-Helmholtz Centre for Ocean Research Kiel, Wischhofstraße 1-3, 24148 Kiel, Germany;...recovered in the Trans-Atlantic Geotraverse (TAG) field along the Mid Atlantic Ridge (MAR). Sediments...correlation with calcite XRD reflection in selected TAG samples, and this could be applied to the preliminary...hematite, respectively) were detected. Pyrite was the dominant hydrothermal mineral and Cu sulfides (chalcopyrite...(chalcopyrite, covellite) and hydrothermal Mn oxides (birnessite and todorokite) were mineral phases identified |  | 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) | | activelyforming TAG deposit, Mid-Atlantic Ridge, based on LA-ICP-MS analyses of pyrite Hannah L.J. Grant...actively-forming TAG deposit, Mid-Atlantic Ridge, based on LA-ICP-MS analyses of pyrite. Chemge (2018)...actively-forming TAG deposit, Mid-Atlantic Ridge, based on LA-ICP-MS analyses of pyrite Hannah L.J. Grant1*...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) | | REE compositions of anhydrites from the TAG seafloor hydrothermal system SUSAN E. HUMPHRIS1,* and WOLFGANG...from the TAG (Trans-Atlantic Geotraverse) active hydrothermal mound (26°08=N, Mid-Atlantic Ridge) that have...patterns of REE behavior when normalized to TAG end-member hydrothermal fluid. Despite differences in REE patterns...precipitated from fluids with a similar range of hydrothermal fluid and seawater components, and all but one...indicates normalization to end-member black smoker hydrothermal fluid) and a small or no Eu anomaly (EuBS/Eu*BS |  | | Journal (article/letter/editorial) | | presently forming VMS deposit: TAG hydrothermal mound, Mid-Atlantic Ridge, 26°°N Received: 16 November...drilling of the active TAG hydrothermal mound at 26°N on the Mid-Atlantic Ridge provided the ®rst insights...massive sul®de (VMS) deposit on a sediment-free mid-ocean ridge. Sul®de precipitation at this site started...200-m diameter, 50-m-high pyritic mound and a silici®ed stockwork complex containing approximately 3.9 million...sea¯oor. The periodic release of high-temperature hydrothermal ¯uids at the same location for several thousand |  | | Report (chapter) | | Precipitation of hydrothermal sediments on the active TAG mound: implications for ochre formation H.... A. M I L L S & R. W. N E S B I T T School of Ocean and Earth Science, Southampton Oceanography Centre...drilling studies of the active TAG hydrothermal mound (26°N, Mid-Atlantic Ridge) have led to new models of...Metalliferous sediments from the top of the hydrothermal mound accumulate from a combination of processes...fluids that percolate through the mound. Geochemical proxies of hydrothermal processes allow identification |  | | Journal (article/letter/editorial) | | crystalline silica from the TAG submarine hydrothermal mound, 26°N Mid Atlantic Ridge Received: 10 September...variety of hydrothermal samples from the Trans-Atlantic Geotraverse (TAG) hydrothermal mound, 26°N Mid-Atlantic...Mid-Atlantic Ridge. The water content, trace element chemistry, and mineralogy of crystalline silica from 15...chimney (n 1), anhydrite bearing hydrothermal breccias (n 2), pyrite silica breccias (n 3), and silici®ed...of ferric iron oxyhydroxides in hydrothermal breccias from the mound ¯anks, within shallower subsurface |  | | 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 rock become sufficiently depleted to render pyrite and chalcopyrite unstable. The relatively high...the low H2S(aq) and mFe / mCu ratios observed at TAG vent fluids are consistent with constraints imposed |  | | Journal (article/letter/editorial) | | origin of clay minerals in active and relict hydrothermal deposits SILKE SEVERMANN,1,*,† RACHEL A. MILLS... PALMER,1 and ANTHONY E. FALLICK2 1 School of Ocean and Earth Science, Southampton Oceanography Centre...20, 2003) Abstract—Samples of Fe-oxide-rich hydrothermal sediments were collected from active and inactive...TransAtlantic Geotraverse (TAG) hydrothermal field on the Mid-Atlantic Ridge. Clays separated from TAG metalliferous...from the inactive Alvin mound compared with 81–96°C for samples from the active TAG site. The latter are |  | Lee, Su Young, Ohnishi, Masatsugu, Shibata, Yasuhiro, Wwatanabe, Makoto, Hoshino, Kenichi, Jige, Mayumi, Gu, Xiangping, Chiba, Hitoshi, Oomori, Tamotsu, Fujioka, Kantaro, Rona, Peter A. (2001) Zinc-rich Pyrite from the TAG Active Mound, the TAG Hydrotherma Field, Mid-Atlantic Ridge. Resource Geology, 51 (1) 63-68 doi:10.1111/j.1751-3928.2001.tb00082.x | Journal (article/letter/editorial) | | Zinc-rich Pyrite from the TAG Active Mound, the TAG Hydrotherma Field, Mid-Atlantic Ridge Su Young LEE...Abstract: Pyrite rich in Zn, up to 3.1 wt%, was found in the TAG active mound of the TAG hydrothermal field...the slow-spreading Mid-Atlantic Ridge at 26°08'N and 44°49'W. The Zn-rich pyrite is characterized by...negative correlation between Fe and Zn contents of the pyrite and a rather small unit cell edge (a0 = 5.4117...the pyrite in solid solution. Such Zn concentrations are observed exclusively in dendritic pyrite, suggesting |  | | Journal (article/letter/editorial) | | geochemistry of hydrothermal deposits from the active TAG Mound, 26°N Mid-Atlantic Ridge RACHEL A. MILLSt...geochemistry of various phases from the active TAG hydrothermal mound has been examined and related to their...their mineralogy and fluid chemistry. The mound deposits range from black and white smoker chimneys, massive...anhydrite within the TAG mound is the major mechanism for removal of REE during mound circulation and 0...from the white smoker chimneys. Oxides from the mound fall into three different categories with distinct |  | | 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, brine–seawater...brine–seawater mixing and complex interplay among various metals and minerals deposited and remineralized...however, concentrations of Cu in 363°C fluids at the TAG site are well above values determined from seawater/basalt |  | | Journal (article/letter/editorial) | | seafloor hydrothermal systems: metalliferous deposits from the TAG hydrothermal area, 26’N Mid-Atlantic Ridge...from the TAG hydrothermal area, 26”N on the Mid-Atlantic Ridge, reveal evidence of release of ocean crust-derived...Is60s ratios of sulfide samples from the active TAG mound vary between 8.7 and 1.3. The highest ratios are...evidence of both entrainment of seawater into hydrothermal fluids and the addition of seawater OS to samples...oxidation. Several sulfide samples from the active TAG mound have ls70s/ ls60s ratios lower than the inferred |  | | Journal (article/letter/editorial) | | deposits: ancient and modern Peter M. Herzig Phil. Trans. R. Soc. Lond. A 1999 357, doi: 10.1098/rsta.1999...the article or click here To subscribe to Phil. Trans. R. Soc. Lond. A go to: http://rsta.royalsocietypublishing...modern analogues of massive sulphide deposits and hydrothermal systems are presently known at the modern sea-floor...Fuca Ridge, and in the TAG deposit at the Mid-Atlantic Ridge. Currently, mining of hydrothermal deposits...sea-floor. It was documented that the 350 ◦ C hydrothermal fluids discharging from the black smoker chimneys |  | Popoola, Samuel Olatunde, Han, Xiqiu, Wang, Yejian, Qiu, Zhongyan, Ye, Ying, Cai, Yiyang (2019) Mineralogical and Geochemical Signatures of Metalliferous Sediments in Wocan-1 and Wocan-2 Hydrothermal Sites on the Carlsberg Ridge, Indian Ocean. Minerals, 9 (1) 26 doi:10.3390/min9010026 | Journal (article/letter/editorial) | | in Wocan-1 and Wocan-2 Hydrothermal Sites on the Carlsberg Ridge, Indian Ocean Samuel Olatunde Popoola...Yiyang Cai 2 1 2 3 * Department of Marine Science, Ocean College, Zhejiang University, Zhoushan 316021, China;...active hydrothermal site (Wocan-1) and inactive hydrothermal site (Wocan-2) from Wocan Hydrothermal Field...Field, on the Carlsberg Ridge (CR), northwest Indian Ocean. We aim to understand the spatial variations...conditions and the intensity of hydrothermal circulations in the Wocan hydrothermal systems. Sediment samples |  | Keith, Manuel, Häckel, 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) | | com/locate/oregeorev Trace element systematics of pyrite from submarine hydrothermal vents Manuel Keith a,⁎, Florian Häckel...Available online 1 August 2015 Keywords: Pyrite Trace elements Hydrothermal sulfides Laser Ablation ICP–MS VHMS...VHMS a b s t r a c t Submarine hydrothermal sulfide ores occur at mid-ocean ridges, intra-oceanic arcs and...with host rocks of highly variable composition. Pyrite is the dominant sulfide mineral in most samples...study, and thus the trace element composition of pyrite may reflect the different metal sources and precipitation |  | GLYNN, S, MILLS, R, PALMER, M, PANCOST, R, SEVERMANN, S, BOYCE, A (2006) The role of prokaryotes in supergene alteration of submarine hydrothermal sulfides. Earth and Planetary Science Letters, 244 (1) 170-185 doi:10.1016/j.epsl.2006.01.065 | Journal (article/letter/editorial) | | prokaryotes in supergene alteration of submarine hydrothermal sulfides S. Glynn a,b , R.A. Mills a,⁎, M.R...c , S. Severmann d , A.J. Boyce e a School of Ocean and Earth Science, National Oceanography Centre...activity in supergene reactions within submarine hydrothermal sulfidic sediments. Data are presented for two...from the periphery of the inactive Alvin hydrothermal mound. The limit of oxygenated seawater penetration...associated with mid-ocean ridge hydrothermal systems [3] and eastern equatorial Pacific open ocean sites [4] |  | 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...[25–29], 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...the disposal of mine tailings in coastal and deep ocean can also provide an indication of sulfide mineral |  | Findlay, Alyssa J., Gartman, Amy, Shaw, Timothy J., Luther, George W. (2015) Trace metal concentration and partitioning in the first 1.5 m of hydrothermal vent plumes along the Mid-Atlantic Ridge: TAG, Snakepit, and Rainbow. Chemical Geology, 412. 117-131 doi:10.1016/j.chemgeo.2015.07.021 | Journal (article/letter/editorial) | | the first 1.5 meters of hydrothermal vent plumes along the Mid-Atlantic Ridge: TAG, Snakepit, and Rainbow...the first 1.5 meters of hydrothermal vent plumes along the Mid-Atlantic Ridge: TAG, Snakepit, and Rainbow...the first 1.5 meters of hydrothermal vent plumes along the Mid-Atlantic Ridge: TAG, Snakepit, and Rainbow...of Marine Science and Policy, College of Earth Ocean and Environment, University of Delaware 700 Pilottown...determine the significance of metal fluxes from hydrothermal vents, understanding the speciation, reactivity |  | 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...apparently only during oxidative alteration of pyrite phases. Fission track registration has demonstrated...controlling this enrichment. U/Fe ratios in fully oxidised TAG sediments are constant and approximately an order |  | | Journal (article/letter/editorial) | | Material from the Loki’s Castle Hydrothermal Vent on the Mohn’s Ridge Ben Snook 1, *, Kristian Drivenes... Abstract: Loki’s 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...sulphide phases, identifiable by microscopy, are pyrite and marcasite with minor pyrrhotite and galena...Keywords: Seafloor sulphides; Norway; Arctic Mid Ocean Ridge; copper; zinc; mineralogy; ICP-ES/ MS; XRD; |  | | 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 hydrothermal–sedimentary material collected with sedimentation...the bottoms of black smokers at the TAG and Broken Spur hydrothermal fields and reports the results of...“mature” (having an age of 40–50 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 |
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