 | | Report (chapter) | | sulphide deposits at the Middle Valley and Escanaba Trough spreading centres: ODP Leg 169 R. H. J A M...drilled during Ocean Drilling Program Leg 169 at two locations along the Juan de Fuca/Gorda spreading centres...impregnations and cross-cutting copper-rich veins. Ridge-parallel normal faulting is probably involved in...recovered from the Central Hill hydrothermal site, Escanaba Trough, suggests mineralization forms only a thin...formation of a large ore deposit in this area. Ocean Drilling Program (ODP) Leg 169 was the second leg |  | Bogdanova, O. Yu., Lein, A. Yu., Dara, O. M., Ozhogina, E. G., Lisitzin, A. P. (2016) Pyrrhotite mineralization as a search criterion for sulfide deposits at sediment-covered spreading centers. Doklady Earth Sciences, 470 (1) 928-932 doi:10.1134/s1028334x16090038 | Journal (article/letter/editorial) | | hydrothermal vents of the Hydrothermal Hills in the Southern Trough of the Guaymas depression were studied. A series...1134/S1028334X16090038 By the northern course of the East Pacific Rise (EPR), three sulfide deposits were found on...part of Juan de Fuca Ridge (Middle Valley), and in the Escanaba Trough (the southern part of Gorda Ridge)...Bessy type, e.g., in the Sanbagawa metamorphic complex (Japan) [5]. In the course of this study, the authors...hydrothermal vents from the Hydrothermal Hill (the Southern Trough of the Guaymas depression) of the collection |  | Von Damm, K.L., Parker, C.M., Zierenberg, R.A., Lilley, M.D., Olson, E.J., Clague, D.A., McClain, J.S. (2005) The Escanaba Trough, Gorda Ridge hydrothermal system: Temporal stability and subseafloor complexity. Geochimica et Cosmochimica Acta, 69 (21) 4971-4984 doi:10.1016/j.gca.2005.04.018 | Journal (article/letter/editorial) | | doi:10.1016/j.gca.2005.04.018 The Escanaba Trough, Gorda Ridge hydrothermal system: Temporal stability... OLSON,3 D. A. CLAGUE,4 and J. S. MCCLAIN2 1 Complex Systems Research Center, Institute for the Study...from the active hydrothermal system in Escanaba Trough, Gorda Ridge in 2000 and 2002 remain unchanged from...chemistry of the hydrothermal system are much more complex within the sediment cover than would be expected...whether the system had evolved since 1988. Escanaba Trough is one of only four active hydrothermal systems |  | | Journal (article/letter/editorial) | | various geological settings, including the Okinawa Trough (sediment-rich Hakurei and sediment-poor NU Jade...Vienna MA Woods fields), and the Central Indian Ridge (mafic/ultramafic-hosted Kairei and basalt-hosted...mineral assemblages and FeS contents in sphalerite/wurtzite. This correlation TE suggests that the redox...fluids of the TAG and ultramafic-hosted Mid-Atlantic Ridge systems due to the low H2S concentrations. With...(e.g., Seewald et al., 2003; Takai et al., 2008; de Ronde et al., 2011; Reeves et al., 2011). NU Assuming |  | | Report (volume) | | massive sulfide mound in the NESCA area in the Escanaba Trough , offshore of northern California, depth 3232...Hydrothermal, and Biologic Studies at Escanaba Trough, Gorda Ridge, Offshore Northern California JANET...hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore northern California I Janet...references. 1. Geology-Escanaba Trough. 2. Hydrothermal vents-Escanaba Trough. 3. Hydrothermal vent faunaEscanaba...faunaEscanaba Trough. 4. Escanaba Trough. I. Morton, Janet L. II. Zierenberg, Robert A. III. Reiss, Carol |  | | Journal (article/letter/editorial) | | Pyrrhotite-Rich Massive Sulfide Deposits, Escanaba Trough, Southern Gorda Ridge TUOMO O. TÖRMÄNEN* Institute of...sediment-covered floor of the Escanaba trough, the slow-spreading, southernmost segment of Gorda Ridge. These concentrations...chimneys. The low solubility of Au as a bisulfide complex and the absence of fluid mixing during this stage...that gold was effectively scavenged from the Escanaba trough vent fluids by coexisting droplets of liquid...of hydrothermal fluids with sediment in the Escanaba trough. In contrast, the absence of the Au-Bi association |  | Zierenberg, Robert A., Koski, Randolph A., Morton, Janet L., Bouse, Robin M. (1993) Genesis of massive sulfide deposits on a sediment-covered spreading center, Escanaba Trough, southern Gorda Ridge. Economic Geology, 88 (8) 2069-2098 doi:10.2113/gsecongeo.88.8.2069 | Journal (article/letter/editorial) | | averagingmorethan1 g/t Au. Massivesulfidefromthe Escanaba troughis enrichedin groupIV, V, andVI elementsrelativeto...ZIERENBERG ET AL. die Valley (northernJuande Fuca Ridge),and the cino fracture zone on the south and...approxiaboutthe tectonicsettingsand the natureof ore- Escanaba formingprocesses inancientpalcorift,sediment-dom-...inantenvironments. Data fromthe Escanaba trough, hough,1980; Wilson,1989). The Escanaba consistent with the slow-spreading...intersection Escanabatrough, the sediment-covered southern- with the Mendocino fracture zone. Southof 41ø17'N |  | Davis, A. S., Clague, D. A., Zierenberg, R. A., Wheat, C. G., Cousens, B. L. (2003) SULFIDE FORMATION RELATED TO CHANGES IN THE HYDROTHERMAL SYSTEM ON LOIHI SEAMOUNT, HAWAI'I, FOLLOWING THE SEISMIC EVENT IN 1996. The Canadian Mineralogist, 41 (2) 457-472 doi:10.2113/gscanmin.41.2.457 | Journal (article/letter/editorial) | | magmatic gases and sulfide crystals. The presence of wurtzite, pyrrhotite, and chalcopyrite indicate high-temperature...(>250°C), the first such occurrence documented for an ocean-island volcano. The composition of the sulfide minerals...similar to that of sulfides from black smokers at mid-ocean ridges. Samples from barite-rich mounds, built after...plume, resemble white smoker deposits from mid-ocean ridges. The ␦34S of the sulfide is lower than that...des sulfates hydrothermaux dans les échantillons de sédiment prélevés lors d’une mission d’urgence au |  | | Journal (article/letter/editorial) | | Environmental Sciences Division, Oak Ridge N ational Laboratory, P.O. Box 2008, Oak Ridge, Tennessee 37831-6036 INTRODUCTION...be a relatively common phenomenon on the world ridge-crest system. It is a consequence of the emplacement...extending from the ridge axes (zero crustal age) to several thousand kilometers away on the ridge flank� (crustal...rates, at sediment-covered and sediment-starved ridge axes, and at temperatures ranging from just a few...systems. Not (21 °24'N, 38°03'E) and the Mariana Trough ( 1 8° 1 3'N, 144°4 1'E). shown are the Red Sea |  | | Journal (article/letter/editorial) | | Middle Valley Sulfide Deposits, Northern Juan de Fuca Ridge: Radiogenic Isotope Systematics T. BJERKGÅRD...sediment-filled rift valley at the northern Juan de Fuca Ridge, are among the largest and richest sulfide...deposits on the modern sea floor. Drilling during Ocean Drilling Program Leg 169 allowed a complete hydrothermal...rift valley at the northernmost end of the Juan de Fuca Ridge, about 150 km † Corresponding author: e-mail...Goodfellow and Blaise, 1988) and has been drilled by the Ocean Drilling Program on two occasions, during Leg 139 |  | 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...(including Cd-bearing type with up to 41.38 wt% Cd) and wurtzite, subordinate opal, pyrite, chalcopyrite and Fe-oxyhydroxides...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: |  | | Journal (article/letter/editorial) | | Valley, Juan de Fuca Ridge DAMON A. H. TEAGLE† Southampton Oceanography Centre, School of Ocean and Earth...of the bare-rock Endeavour segment of the Juan de Fuca Ridge, is host to the base metal-rich (Cu-Zn) Bent...steep-sided body ~200 m across and ~100-m-thick. Ocean Drilling Program (ODP) hole 856H penetrates through...basalts, ~0.7), that mimic profiles for midocean ridge hydrothermal fluids, require fluid-rock exchange...vents or through more diffuse leakage. In contrast, ocean crust spreading close to sources of abundant clastic |  | Totsuka, Shuhei, Shimada, Kazuhiko, Nozaki, Tatsuo, Kimura, Jun-Ichi, Chang, Qing, Ishibashi, Jun-ichiro (2019) Pb isotope compositions of galena in hydrothermal deposits obtained by drillings from active hydrothermal fields in the middle Okinawa Trough determined by LA-MC-ICP-MS. Chemical Geology, 514. 90-104 doi:10.1016/j.chemgeo.2019.03.024 | Journal (article/letter/editorial) | | active hydrothermal fields in the middle Okinawa Trough determined by LA-MC-ICP-MS Shuhei Totsuka, Kazuhiko...active hydrothermal fields in the middle Okinawa Trough determined by LA-MC-ICP-MS, Chemical Geology, https://doi...active hydrothermal fields in the middle Okinawa Trough determined by RI PT LA-MC-ICP-MS SC Shuhei...Hyogo 657-8501, Japan ACCEPTED MANUSCRIPT 5 Ocean Resources Research Center for Next Generation, Chiba...from two hydrothermal fields in the middle Okinawa Trough were studied. One of the study fields was the Iheya |  | Suzuki, Ryohei, Ishibashi, Jun-Ichiro, Nakaseama, Miwako, Konno, Uta, Tsunogai, Urumu, Gena, Kaul, Chiba, Hitoshi (2008) Diverse Range of Mineralization Induced by Phase Separation of Hydrothermal Fluid: Case Study of the Yonaguni Knoll IV Hydrothermal Field in the Okinawa Trough Back-Arc Basin. Resource Geology, 58 (3) 267-288 doi:10.1111/j.1751-3928.2008.00061.x | Journal (article/letter/editorial) | | Yonaguni Knoll IV Hydrothermal Field in the Okinawa Trough Back-Arc Basin Ryohei Suzuki1,3, Jun-Ichiro Ishibashi1...1370–1385 m near the western edge of the southern Okinawa Trough. During the YK03–05 and YK04–05 expeditions...massive Zn-Pb-Cu sulfides, consisting of sphalerite, wurtzite, galena, chalcopyrite, pyrite, and marcasite;... R. Suzuki et al. FeS content in sphalerite/wurtzite and the fluid temperature for each site, which...systems in the arc–back-arc setting of the western Pacific would provide a good test field for discussing |  | | Journal (article/letter/editorial) | | Precipitation of gold during conductive cooling of mid-ocean ridge black smoker (MOR) fluids occurs at low temperatures...In this case, the lower stability of the AuHS° complex at low ƒO2 (buffered by fayalite, magnetite, and...aqueous species to very low temperatures. These complex systematics make prediction of Au and Ag grades...sebastian.fuchs@bgr.de 1 GEOMAR – Helmholtz Centre for Ocean Research Kiel, Wischhofstrasse 1-3, 24148 Kiel,...1977 (Lonsdale 1977) and black smokers at East Pacific Rise a few years later (Francheteau et al. 1979; |  | | Journal (article/letter/editorial) | | seafloor (Bent Hill, Axial Seamount, Southern Juan de Fuca Ridge, Valu Fa Ridge). These are linked to oceanic...support this suggestion. At Bent Hill (Northern Juan de Fuca Ridge) clastic sulphide ores consisting of pyrrhotite...and epidote. b At Axial Seamount (Middle Juan de Fuca Ridge) fragments of basalt glass are trapped in... At Southern Juan de Fuca Ridge fragments of sulphide ore containing chiefly sphalerite, wurtzite, and...vents occur in mid-ocean-ridge ferro-basalt (Koski et al., 1984). At Valu Fa Ridge the ores of the Ba–Zn |  | | Report (issue) | | originally given at an international workshop on deep ocean mineral resources beyond the limits of national...tectonic settings at the modern seafloor including mid-ocean ridges, back-arc rifts, and seamounts. Many of the...the sulphide deposits consist of a black smoker complex on top of a sulphide mound which commonly is underlain...sulphides, and vent biota at the crest of the East Pacific Rise at 21°N in 19791,2 confirmed that the formation...the discovery of hydrothermal vents at the mid-ocean ridges, significant mineral deposits have been documented |  | NOKU, Shadrach K., MATSUEDA, Hiroharu, ESPI, Joseph O., AKASAKA, Masahide (2012) Petrology, Geochemistry, and Fluid Inclusion Microthermometry of Sphalerite from the Laloki and Federal Flag Strata-Bound Massive Sulfide Deposits, Papua New Guinea: Implications for Gold Mineralization. Resource Geology, 62 (2) 187-207 doi:10.1111/j.1751-3928.2012.00188.x | Journal (article/letter/editorial) | | sulfides at a mid-ocean ridge setting rather than typical arc-type massive sulfides. The complex relationship...stratiform massive sulfide lens (Pontifex, 1965; Yates & de Ferranti, 1967; Williamson, 1982). Kulange et al...intruded by the Paleocene-Eocene Sadowa Intrusive Complex that is dominated by gabbroic phases. The Paleogene...claystone with subordinate chert and lutite (Yates & de Ferranti, 1967; Pieters, 1978; Rogerson et al., 1981;...and Federal Flag deposits. The Sadowa Intrusive Complex of Paleocene-Eocene age (Rogerson & Hilyard, 1990) |  | Wang, Yan, Wu, Zhongwei, Sun, Xiaoming, Deng, Xiguang, Guan, Yao, Xu, Li, Huang, Yi, Cao, Kaijun (2018) He–Ar–S Isotopic Compositions of Polymetallic Sulphides from Hydrothermal Vent Fields along the Ultraslow-Spreading Southwest Indian Ridge and Their Geological Implications. Minerals, 8 (11) 512 doi:10.3390/min8110512 | Journal (article/letter/editorial) | | along the Ultraslow-Spreading Southwest Indian Ridge and Their Geological Implications Yan Wang 1,2,†...along the ultraslow-spreading Southwest Indian Ridge (SWIR). The helium, argon, and sulphur isotope compositions...number of active/inactive vent fields in the Indian Ocean. The helium concentrations and isotopic ratios in...massive sulphides from the fast-spreading East Pacific Rise (EPR), especially for three Cu–Fe-rich samples...the majority of sulphide minerals from the Indian Ocean have much higher δ34 S values (3.0h–9.8h, ~5.9 on |  | | Report (chapter) | | sulphide ores at Yaman Kasy in the Silurian of the southern Urals have yielded not only well-preserved sulphidized...massive sulphide ores at Y a m a n Kasy, in the southern Urals have yielded fragments o f black smoker...Urals. In." MILLS, R. A. & HARRISON,K, (eds) Modern Ocean Floor Processesand the GeologicalRecord, Geological...volcanogenic massive sulphides discovered in the southern Urals. These are developed within a series of...marginal sea on the western side of the Uralian Ocean (Zaykov 1991). The Sakmara zone now forms an allochthonous |  | Melekestseva, Irina Yu., Maslennikov, Valery V., Tret’yakov, Gennady A., Nimis, Paolo, Beltenev, Victor E., Rozhdestvenskaya, Irina I., Maslennikova, Svetlana P., Belogub, Elena V., Danyushevsky, Leonid, Large, Ross, Yuminov, Anatoly M., Sadykov, Sergey A. (2017) Gold- and Silver-Rich Massive Sulfides from the Semenov-2 Hydrothermal Field, 13°31.13′N, Mid-Atlantic Ridge: A Case of Magmatic Contribution?. Economic Geology, 112 (4) 741-773 doi:10.2113/econgeo.112.4.741 | Journal (article/letter/editorial) | | Semenov-2 Hydrothermal Field, 13°31.13'N, Mid-Atlantic Ridge: A Case of Magmatic Contribution?* Irina Yu. Melekestseva...Semenov-2 hydrothermal field on the Mid-Atlantic Ridge is host to a rather unique Cu-Zn– rich massive sulfide...studied are similar to those of the Mid-Atlantic Ridge ultramafic-hosted Cu-Zn–rich massive sulfides, such...back-arc structures (e.g., JADE field, Okinawa Trough, up to 24 ppm Au and 1.1 wt % Ag; Halbach et al...volcano, Kermadec volcanic arc, up to 91 ppm Au; de Ronde et al., 2011; Vai Lili field, Lau back-arc |  | Evrard, Catherine, Fouquet, Yves, Moëlo, Yves, Rinnert, Emmanuel, Etoubleau, Joël, Langlade, Jessica Aimée (2015) Tin concentration in hydrothermal sulphides related to ultramafic rocks along the Mid-Atlantic Ridge: a mineralogical study. European Journal of Mineralogy, 27 (5) 627-638 doi:10.1127/ejm/2015/0027-2472 | Journal (article/letter/editorial) | | related to ultramafic rocks along the Mid-Atlantic Ridge: a mineralogical study CATHERINE EVRARD1,2,*, YVES...JESSICA AIMÉE LANGLADE5 1 IFREMER, LGM, Centre de Brest, ZI de la Pointe du Diable, CS 10070, 29280 Plouzané...Université de Nantes, 2 rue de la Houssinière, 44322 Nantes cedex 3, France 4 IFREMER, LDCM, Centre de Brest...Brest, ZI de la Pointe du Diable, CS 10070, 29280 Plouzané, France 5 CNRS UMS 3113, IUEM, rue Dumont d’Urville...polymetallic sulphides collected along the Mid-Atlantic Ridge and hosted in ultramafic rocks (Ashadze, Logatchev |  | | Journal (article/letter/editorial) | | Trans-Atlantic Geotraverse (TAG) and Logatchev, Mid-Atlantic Ridge sites (Dekov et al., 2011; Hannington, 1993). It...Logatchev vent field at 14°45’N on the Mid Atlantic Ridge, do not behave as sinks for heavy metals during...hydrothermal field at 26°N on the Mid Atlantic Ridge are Au enriched compared to others in the same area...ecosystems, disperse or accumulate in the wider ocean or ultimately precipitate out elsewhere as oxides...The weathering process of sulphide minerals is complex and varies as a function of primary mineralogy |  | | Book | | the Japanese Islands as well as other western Pacific regions. vi Preface In Chapter 2, a geochemical...deposits) are compared with those of midoceanic ridge deposits and Kuroko deposits. In Chapter 3, hydrothermal...estimated. These fluxes are compared with midoceanic ridge hydrothermal fluxes. Particularly, hydrothermal...relationships in Kuroko and vein-type deposits in southern Hokkaido, Japan ....................... 1S.4............................... 2.3. I .1. Okinawa Trough ......................... ............. 2.3. I |  | | Report (volume) | | (08) 379-0444 Fax (08) 379-4634) India Affiliated East-West Press pvt Ltd G-l/16 Ansari Road New Delhi...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 |
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