 | | Journal (article/letter/editorial) | | hydrothermal sediments collected from the Lau Basin and the North Fiji Basin during R/V Sonne cruise SO 35. The...consist primarily of bimessite or a mixture of todorokite and bimessite. Because manganese oxides are wide...patterns similar to fibrous todorokite crystals are observed. The surface of todorokite-bimessite particles is...the welldefined parallel ridge and valley topography of fibrous todorokite. Ridges and valleys are interrupted...16Ot- 1440 m. Valu Fa Ridge) and SO35 256KD (15”37.59’S; 177”18.94’E; 1890-1825 m, Braemar Ridge) were air |  | Kuhn, T., Bostick, B.C., Koschinsky, A., Halbach, P., Fendorf, S. (2003) Enrichment of Mo in hydrothermal Mn precipitates: possible Mo sources, formation process and phase associations. Chemical Geology, 199 (1) 29-43 doi:10.1016/s0009-2541(03)00054-8 | Journal (article/letter/editorial) | | Triple Junction of the Central Fiji Ridge in the North Fiji Basin (NFB). The crusts are up to 30 mm thick...infilling cavities. The crusts consist of pure todorokite ((Mn2 +,Ca,Mg)Mn43 +O7H2O) and birnessite (Na4Mn14O279H2O)...Molybdenum; Hydrothermalism; Mn crusts; North Fiji Basin; Back-arc 1. Introduction Molybdenum is concentrated...structures of the North Fiji Basin (CFR = Central Fiji Ridge; WFR = West Fiji Ridge; NFFZ = North Fiji Fracture...study, Mo-enriched Mn crusts from the North Fiji Basin (NFB) are examined. These hydrothermal Mn crusts |  | Fouquet, Yves, von Stackelberg, Ulrich, Charlou, Jean Luc, Erzinger, Joerg, Herzig, Peter M., Muehe, Richard, Wiedicke, Michael (1993) Metallogenesis in back-arc environments; the Lau Basin example. Economic Geology, 88 (8) 2154-2181 doi:10.2113/gsecongeo.88.8.2154 | Journal (article/letter/editorial) | | 2154-2181 Metallogenesis in Back-ArcEnvironments' The Lau BasinExample YVESFOUQUET, IFREMER, Centre de Brest...hydrothermal activityon a modernback-arcvolcanicridge,the Valu Fa Ridge.Three majorhydrothermalfields(Hine Hina,...the developmentof sulfidemounds. Vent fluidsat Valu Fa havemuchhighermetalcontentsthanthoseat midoceanridges...54-2854.00 2154 BACK-ARC ENVIRONMENTS: LA U BASIN 215 5 17ø30'S and 19ø20' S, locatedat the centralpart...there have been a number of Sand22ø50' S (ValuFa Ridge),located75 km closer investigations of hydrothermalprocesses |  | | Report (chapter) | | Hawaii and Maui, and the Valu Fa back-arc basin spreading axes and the Tonga volcanic arc in the South...sonar. - Mounds and chimneys 1 Less common on ridge, continental slope and shelf. 2 Includes seamounts...hydrothermal-hydrogenetic Fe-Mn crust from Gorda Ridge, Northeast Pacific. The crust shows distinct growth...of a 10A manganite, which we will refer to as todorokite and a 7,~ manganite, which we will refer to as...controversial (Burns et al. 1983; Usui et al. 1989). Todorokite, with X-ray reflections at 1.4, 2.4, 3.3, 4.8 |  | | Report (chapter) | | 835 in relation to crustal evolution of the Lau Backarc Basin R. A . H O D K I N S O N & D. S. C R O N...Sites 834 and 835 in the Lau Backarc Basin have been studied with respect to basin evolution. Multivariate...Eastern Lau Spreading Centre (ELSC) into the basin. The subsequent propagation of the Central Lau Spreading...Spreading Centre (CLSC) into the basin is not clearly recorded. Non-detrital element accumulation rates for...delay between ridge formation and either the initiation of hydrothermal systems on the ridge and/or their |  | Josso, P., Pelleter, E., Pourret, O., Fouquet, Y., Etoubleau, J., Cheron, S., Bollinger, C. (2017) A new discrimination scheme for oceanic ferromanganese deposits using high field strength and rare earth elements. Ore Geology Reviews, 87. 3-15 doi:10.1016/j.oregeorev.2016.09.003 | Journal (article/letter/editorial) | | the East Pacific rise (EPR) or the Mid-Atlantic Ridge (MAR) [Barret and Jarvis, 1988; Goulding et al....fracture zone, the active Tonga and Vanuatu subduction zones and associated Lau and North Fiji back-arc...crusts are crosscut by Fe-Si precipitates displaying ridge or vein-like structures up to 1 m high [Pelleter...displaying a metallic grey luster shows birnessite and todorokite, 7 Å and 10 Å manganates respectively [Pelleter...the overlap of reflections with birnessite and todorokite. Iron oxides are dominated by amorphous oxyhydroxides |  | | Journal (article/letter/editorial) | | Fe-Mn oxide from the active Lau Basin back-arc spreading axis (Valu Fa Ridge) has an %r/*%r ratio with...One crust from an off-axis seamount west of Gorda Ridge may have begun p~ipi~ting hy~~eneti~y at 0.5 Ma...fluids (HEIN et al., 1990b). Well-crystallized todorokite, bimessite, and ver- INTRODUCI’ION Fe-Mn OXIDECRUSTSARE...seamounts and ridges (Marshall Islands, Necker Ridge, and the Musician Seamounts) that are sites of hydrogenetic...precipitation of Fe-Mn oxides, a back-arc spreading ridge (Lau basin) that is a site of hydrothermal precipitation |  | Hodkinson, R.A., Stoffers, P., Scholten, J., Cronan, D.S., Jeschke, G., Rogers, T.D.S. (1994) Geochemistry of hydrothermal manganese deposits from the Pitcairn Island hotspot, southeastern Pacific. Geochimica et Cosmochimica Acta, 58 (22) 5011-5029 doi:10.1016/0016-7037(94)90228-3 | Journal (article/letter/editorial) | | most trace element poor crusts from mid-oceanic ridge environments. REE data suggest that these crusts...Mn crusts between midplate hotspot, mid-oceanic ridge, island arc, and back-arc environments may be influenced...frequency described in mid-oceanic ridge (MOR), island arc, and back-arc basin environments, have rarely been...bound Mn deposit from the South Johnston Island Ridge and, based on chemical data, concluded that it contained... frequently described from island arc, backarc basin, and MOR settings. The Pitcairn deposits are the |  | Pelleter, Ewan, Fouquet, Yves, Etoubleau, Joël, Cheron, Sandrine, Labanieh, Shasa, Josso, Pierre, Bollinger, Claire, Langlade, Jessica (2017) Ni-Cu-Co-rich hydrothermal manganese mineralization in the Wallis and Futuna back-arc environment (SW Pacific) Ore Geology Reviews, 87. 126-146 doi:10.1016/j.oregeorev.2016.09.014 | Journal (article/letter/editorial) | | (iii) the ability of birnessite and buserite/todorokite to strongly scavenge Co, Ni, and Cu from aqueous...zone, the active Tonga-Kermadec subduction zone and ACCEPTED MANUSCRIPT the related Lau and North Fiji...This situation between the northern end of the Tonga trench and the regional Fiji transform fault account...centers such as the FUTUNA and ALOFI IP oceanic ridge (Fouquet et al., 2015; Pelletier et al., 2001)(Fig...spreading segments. The opening rate of this oceanic ridge has been estimated at 4cm/yr from the interpretation |  | Fouquet, Y., Pelleter, E., Konn, C., Chazot, G., Dupré, S., Alix, A.S., Chéron, S., Donval, J.P., Guyader, V., Etoubleau, J., Charlou, J.L., Labanieh, S., Scalabrin, C. (2018) Volcanic and hydrothermal processes in submarine calderas: The Kulo Lasi example (SW Pacific) Ore Geology Reviews, 99. 314-343 doi:10.1016/j.oregeorev.2018.06.006 | Journal (article/letter/editorial) | | the transition between the northern end of the Tonga Trench and the North Fiji fracture zone, where tectonic...oriented volcanic graben and the N-S oriented Alofi ridge. In 2010, the active volcano Kulo Lasi, which represents...lava with no obvious geochemical affinity with the Tonga subduction that occurs 500 km to the east. The central...al. , 2001, Leybourne et al. , 2012a), in the Lau Basin (Baker et al. , 2010, Baker et al. , 2006, Bertine...2007, Von Stackelberg, 1988)}, in the North Fiji Basin (Auzende et al. , 1995, Bendel et al. , 1993, Halbach |  | | Journal (article/letter/editorial) | | characteristics. Hydrothermal manganese deposits comprise todorokite (10 Å ⁎ Corresponding author. E-mail address:...volcanoes on the volcanic front (the Shichito-Iwojima Ridge) of the Izu-Ogasawara arc. The Kaikata Smt has four...Location Setting Kaikata Seamount Shichito-Iwojima Ridge Frontal volcano Sample no. RS-16 RS-18 RS-48...oxides Reference Beyonnaise knoll Shichito-Iwojima Ridge Frontal volcano Usui et al. (1986, 1989) Usui and...al. (2006) Nishi-Jokyo Seamount Nishi-Shichito Ridge Back-arc seamount MW D19-X2 MW D108-X5 31.307 |  | | Report (chapter) | | Ferromanganese crusts recovered from a spreading ridge north of the Rodriguez Triple Junction in the Indian...spreading centres (mid-Atlantic Ridge, Scott et al. 1974; the Galapagos Ridge, Moore & Vogt 1976; Corliss...Explorer Ridge, Grill et al. 1981; in volcanic arc-back-arc basin settings (Tonga-Kermedec Ridge, Cronan...Manus Basin, Bolton et al. 1988; Lau Basin, Hein et al. 1990; Herzig et al. 1990; North Fiji Basin, Murphy...serious effort to explore the mid-Indian Oceanic ridge for hydrothermal activity (Herzig et al. 1988; Rao |  | Altherr, Rainer, Soder, Christian, Panienka, Sandra, Peters, Daniel, Meyer, Hans-Peter (2013) Pink manganian phengite in a high P/T meta-conglomerate from northern Syros (Cyclades, Greece) Contributions to Mineralogy and Petrology, 166 (5) 1323-1334 doi:10.1007/s00410-013-0929-7 | Journal (article/letter/editorial) | | oxyhydroxide deposits consisted of ferrihydrite, todorokite, birnessite, amorphous silica (opal-A) and nontronite...deposits often contain Ba-rich X-ray amorphous todorokite-like phases, birnessite, romanèchite and feroxyhyte...(1973) The origin and fate of ferromanganoan active ridge sediments. Stockholm Contrib Geol 27:149–243 Brady...manganese mineralization along the active Mariana and southern Izu-Bonin arc system, western Pacific. J Geophys...oxide deposits from the Central and South Valu Fa Ridge, Lau Basin. Appl Geochem 26:1192–1204 Sun Z, Zhou |  | Canet, Carles, Prol-Ledesma, Rosa María, Proenza, Joaquín Antonio, Rubio-Ramos, Marco Antonio, Forrest, Matthew J., Torres-Vera, Marco Antonio, Rodríguez-Díaz, Augusto Antonio (2005) Mn–Ba–Hg mineralization at shallow submarine hydrothermal vents in Bahía Concepción, Baja California Sur, Mexico. Chemical Geology, 224 (1) 96-112 doi:10.1016/j.chemgeo.2005.07.023 | Journal (article/letter/editorial) | | crusts are made up of barium rich, X-ray-amorphous todorokite-like and romanechite phases, and represent a...suggest that it corresponds to a poorly crystalline todorokite-like manganese oxide, with relatively high barium...has medium reflectivity and is harder than the todorokite-like phase, and occurs as irregular aggregates...crystalline manganese oxides: Rm, romanechite; Tdk, todorokite-like phase. Reflected light, bar scale: 500 Am...=not analyzed Symbols: Rm, romanechite; Tdk, todorokite-like phase. Analyses are expressed in wt.%. |  | | Report (issue) | | occur in felsic volcanic rocks instead of mid-ocean ridge basalts8. Modern seafloor hydrothermal systems are...large sulphide occurrences along the MidAtlantic Ridge (Logatchev, Snakepit, Broken Spur, Lucky Strike... Menez Gwen10,11,12,13) and the Central Indian Ridge (Sonne Field14,15,16). Shortly after the discovery...sediment-filled basins in the Gulf of California (Guaymas Basin 17). The idea that sedimented ridges might also...on the Juan de Fuca Ridge off-shore Canada18,19. Volcanic-hosted Mid-Ocean Ridge Intraoceanic Back-Arc |  | Iizasa, Kokichi, Asada, Akira, Mizuno, Katsunori, Katase, Fuyuki, Lee, Sangkyun, Kojima, Mitsuhiro, Ogawa, Nobuhiro (2019) Native gold and gold-rich sulfide deposits in a submarine basaltic caldera, Higashi-Aogashima hydrothermal field, Izu-Ogasawara frontal arc, Japan. Mineralium Deposita, 54 (1) 117-132 doi:10.1007/s00126-018-0808-2 | Journal (article/letter/editorial) | | field and at 750–770 m water depth, consists of a ridge-like structure of sulfide chimneys up to 20 m tall...FeMn oxyhydroxides partly occurring as crusts of todorokite on Samples recovered from the central cone hydrothermal...to be flowing west due to bottom current. c A ridge-like complex (arrow) of chimneys (up to 20 m tall...Gravity core samples are from the margin of the ridge and one sample (SE04GC) from other chimney area...Arsenic compoud Amorphous silica Sericite-smectite Todorokite Mn and Fe oxyhyroxides Fig. 9 Paragenetic sequence |  | Binns, R. A., Scott, Steven D., Bogdanov, Y. A., Lisitzin, A. P., Gordeev, V. V., Gurvich, E. G., Finlayson, E. J., Boyd, T., Dotter, L. E., Wheller, G. E., Muravyev, K. G. (1993) Hydrothermal oxide and gold-rich sulfate deposits of Franklin Seamount, western Woodlark Basin, Papua New Guinea. Economic Geology, 88 (8) 2122-2153 doi:10.2113/gsecongeo.88.8.2122 | Journal (article/letter/editorial) | | sevenlongduration dives in the western Woodlark basin, four climbed Franklin Seamount from different directions...Dobu Seamountin ther an interarc nor a back-arc basin. Rather, its of microplaterotathefarwest(Fig.2)...nt(Fig. 2; Binnsand northwest-trendingvolcanic ridge itself 600 m Whirford,1987).AlthoughPACLARKsurveys... neovolcanic zone of the Woodlark the East basin observedno focusedhydrothermal spreadingaxis.FranklinSeamountis...interarc structure,but Davies et al. (1984) lark basin. stressed thattheWoodlarkandPocklington Risesare |  | Hein, James R, Hsueh-Wen, Yeh, Gunn, Susan H, Gibbs, Ann E, Chung-ho, Wang (1994) Composition and origin of hydrothermal ironstones from central Pacific seamounts. Geochimica et Cosmochimica Acta, 58 (1) 179-189 doi:10.1016/0016-7037(94)90455-3 | Journal (article/letter/editorial) | | mid-Atlantic Ridge, East Pacific Rise-Galapagos Ridge, Explorer-Got&-Juan de Fuca Ridges, mid-Indian Ridge, and...have reported on hydrothermal deposits at backarc basin spreading centers (e.g., HALBACHet al., 1989; HERZIG...were collected. 1) Horizon Guyot is a volcanic ridge of Late Cretaceous age (about 88 m.v. old: S~HLANGER...Island Ridge, which connects Johnston Island to the NW trending Johnston Seamount Group (Keli Ridge) to...1). 3) Karin Ridge is the northern terminus of the northwest trending Line Islands Ridge and is a long |  | | Report (volume) | | Proterozoic Banded Iron Formation in the Krivoy Rog Basin (Ukraine) BOHN, B. & STANISTREET, I. G. Insight...history of manganese nodules and crusts of the Peru Basin USUI, A. 8~; SOMEYA, U. Distribution and composition...manganese ores is commonly cited as a shelf or basin margin setting. However, Mukhopadhyay et all., by...development is discussed in relation to the Peru Basin by yon Stackelberg. Like Cronan, he emphasizes the...organic matter oxidation. Climatic variation, and basin water stratification, responsible for Mn concentration |  | Guan, Yao, Ren, Yingzhi, Sun, Xiaoming, Xiao, Zhenglian, Guo, Zhengxing (2018) Helium and Argon Isotopes in the Fe-Mn Polymetallic Crusts and Nodules from the South China Sea: Constraints on Their Genetic Sources and Origins. Minerals, 8 (10) 471 doi:10.3390/min8100471 | Journal (article/letter/editorial) | | shelf, a continental slope and a central deep-sea basin, which the submarine topography is ladder-like from...from the continental margin to the center basin (Figure 1) [51]. The western and northern slope of the...continental margin, whereas the center is the deep-sea basin with dozens of seamounts. The complex submarine...Mindulo Strait and the Barabak Strait and the southern part connects to the Java Sea through the Karimata...clay containing some micro-nodules δ–MnO2 , todorokite, buserite, goethite, feroxyhyte, quartz and plagioclase |  | | Journal (article/letter/editorial) | | active hydrothermal site from the Mid-Atlantic Ridge and demonstrate extreme REE variability over short...an active hydrothermal site on the Mid-Atlantic Ridge. Early work at the Trans-Atlantic Geotraverse ŽTAG...hydrothermal input. Many of the processes studied at ridge axes must also be important in these distal areas...3423-nontronite Mean Pacific hydrogenous crusts c Valu Fa ridge hydrothermal crusts c Mineralogy Fe Ž%. Mn...6.9 10.78 5.0 40.0 19 0.01 26 1.3 51.6 Todorokite, Birnessite FerMn Žatomic. Co Žppm. Ni Žppm |  | | Report (volume) | | hydrothermal vent field: 29~ on the Mid-Atlantic Ridge 33 KRASNOV, S. G., CHERKASHEV,G. A., STEPANOVA...the TAG and MARK sites (1986, 1990) Mid-Atlantic Ridge: a new solution chemistry model and a mechanism... • GERMAN, C. R. Venting from the Mid-Atlantic Ridge at 37~ the Lucky Strike hydrothermal site 87 JAMES...Hydrothermal plumes at Broken Spur 29~ Mid-Atlantic Ridge: chemical and physical characteristics PALMER,M...the Steinah611 hydrothermal plume, 63~ Reykjanes Ridge 111 MILLS, R. A. Hydrothermal deposits and metalliferous |  | Chen, Ping, Chen, Tianhu, Xie, Qiaoqin, Xu, Liang, Liu, Haibo, Zhou, Yuefei (2018) Mineralogy and geochemistry of limonite as a weathering product of ilvaite in the Yeshan iron deposit, Tongling, China. Clays and Clay Minerals, 66 (2) 190-207 doi:10.1346/ccmn.2018.064102a | Journal (article/letter/editorial) | | e.g. pyrolusite, ramsdellite, cryptomelane, todorokite, and chalcophanite (Ostwald, 1988; Post, 1999;...deposits in hydrothermal fields on the Valu Fa Ridge, Lau Basin. Journal of Asian Earth Sciences, 43,...weathered granodioritic gneisses, Mysore Plateau, Southern India. Geochimica et Cosmochimica Acta, 71, 1674 |  | | Book | | Metalliferous sediments from the Juan de Fuca Ridge.61 1.4. Metalliferous sediments from the Indian...sediments in the rift zone of the Mid-Atlantic Ridge.90 1.6.1. Metalliferous sediments from the TAG hydrothermal...hydrothermal sources. Sedi¬ ments from the Guaymas Basin in the rift zone of the Gulf of California are the...the best example of this type. Within the Guaymas Basin, because of the high rate of abiogenic sedimentation...Valley of the Juan de Fuca Ridge, and in the Escanaba Trough of the Gorda Ridge have not been considered |  | Melekestseva, Irina, Kotlyarov, Vasiliy, Tret’yakov, Gennadiy, Shilovskikh, Vladimir, Khvorov, Pavel, Belogub, Elena, Beltenev, Victor, Filippova, Kseniya, Sadykov, Sergey (2022) The Heavy-Metal Fingerprint of the Irinovskoe Hydrothermal Sulfide Field, 13°20′ N, Mid-Atlantic Ridge. Minerals, 12 (12) 1626 doi:10.3390/min12121626 | Journal (article/letter/editorial) | | Hydrothermal Sulfide Field, 13◦ 200 N, Mid-Atlantic Ridge Irina Melekestseva 1, *, Vasiliy Kotlyarov 1 , Gennadiy...hydrothermal sulfide field, 13◦ 200 N, Mid-Atlantic Ridge. Sulfide samples were studied using optical microscopy...sulfide fields. Field, 13◦ 200 N, Mid-Atlantic Ridge. Minerals 2022, 12, 1626. https:// doi.org/10.3390/min12121626...chimneys; hydrothermal sulfide fields; Mid-Atlantic Ridge Academic Editor: Pierfranco Lattanzi Received:...Mid-Atlantic Ridge (MAR), seafloor HSFs occur within mafic- or ultramaficrelated ridge segments and their |
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