 | Clague, D.A., Friesen, Walter, Quinterno, Paula, Morgensson, L.A., Holmes, Mark L., Morton, Janet, Bouse, Robin M., Davis, Alice (1984) Preliminary geological, geophysical, and biological data from the Gorda Ridge. Open-File Report Vol. 1984 (84-364) US Geological Survey doi:10.3133/ofr84364 | Report (issue) | | Geological, Geophysical, and Biological Data from the Gorda Ridge by David Clague, Walter Friesen, Paula Quinterno...Survey editorial standards INTRODUCTION The Gorda Ridge, an oceanic spreading center with a full-spreading...coast of northern California and southern Oregon (Figure 1). The ridge consists of three segments of ridgecrest...the ridge at about 42°N. The entire Gorda Ridge is only about 160 n. miles long and the southern 50 n...miles of the ridge is covered by turbidites. This section is called the Escanaba Trough. Morphologically |  | | 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 |  | | 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 |  | | 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 |  | | Report (issue) | | SULFIDE SAMPLES DREDGED IN 1986 FROM ESCANABA TROUGH, SOUTHERN GORDA RIDGE Laura M. Benninger1 Randolph A...dredged in 1986 from Escanaba Trough, the sediment-covered southern end of Gorda Ridge (Figure 1). The dredge...characteristics of two locations in Escanaba Trough were investigated: the southern or SESCA site at 40°45'N latitude...seismic-reflection and photographic survey in Escanaba Trough (Morton et al., 1987b). Volcanic edifices that...gravity core and water column sampling in Escanaba Trough, are reported in Morton et al., 1987b. High |  | 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 |  | | Journal (article/letter/editorial) | | ANSCHUTZ, * GERARDBLANC,and PETERSTILLE Centre de Gkochimie de la Surface, U.P.R. 625 1 CNRS, 1, rue Bless&...forming close to the buoyant-plume systems at the mid-ocean ridges. In spite of numerous investigations, the...of iron and manganese oxides and oxyhydmxides. Goethite, hematite, mauganite, grout&e, and to&ok&e ~ðe...core. Sample 84- 12 corresponds to one of the goethite layer in Unit 1. Its isotopic ratio is 0.70803...Mg-carbonate solid-solution ; Felds: feldspar: Goeth: goethite; Hem: hematite ; Magn : maguetite ; Mn-ox : Mn-oxide |  | Gablina, I. F., Popova, E. A., Sadchikova, T. A., Savichev, A. T., Gor’kova, N. V., Os’kina, N. S., Khusid, T. A. (2014) Hydrothermal metasomatic alteration of carbonate bottom sediments in the Ashadze-1 field (13° N Mid-Atlantic Ridge) Geology of Ore Deposits, 56 (5) 357-379 doi:10.1134/s1075701514050043 | Journal (article/letter/editorial) | | Sediments in the Ashadze1 Field (13° N MidAtlantic Ridge) I. F. Gablinaa, E. A. Popovab, T. A. Sadchikovaa...for Geology and Mineral Resources of the World Ocean, Angliiskii pr. 1, St. Petersburg, 190121 Russia...ments from hydrothermal plumes, which form in the ocean above active hydrothermal vents. At the same time...Middle Valley of the Juan de Fuca Ridge, Escanaba Trough, etc. in the Pacific Ocean (Curray et al., 1982;...author: I.F. Gablina. Email: gablina@ilran.ru midocean ridges that are distant from continents and covered |  | | 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; |  | Berkenbosch, H. A., de Ronde, C. E. J., Gemmell, J. B., McNeill, A. W., Goemann, K. (2012) Mineralogy and Formation of Black Smoker Chimneys from Brothers Submarine Volcano, Kermadec Arc. Economic Geology, 107 (8) 1613-1633 doi:10.2113/econgeo.107.8.1613 | Journal (article/letter/editorial) | | Volcano, Kermadec Arc H. A. BERKENBOSCH,†,1 C.E.J. DE RONDE,2 J. B. GEMMELL,1 A. W. MCNEILL,1 AND K. GOEMANN3...settings (e.g., Von Damm, 1990; Rona and Scott, 1993; de Ronde et al., 2003; Hannington et al., 2005). This...hydrothermal fluids at intraoceanic arc volcanoes (de Ronde et al., 2011; Huston et al., 2011). Brothers...0361-0128/12/4075/1613-21 Kermadec arc (Fig. 1; de Ronde et al., 2003, 2011). It is primarily dacitic...the SE caldera site is a largely dead vent field (de Ronde et al., 2011; Baker et al., 2012; Caratori |  | | Report (issue) | | 1987 4:00 5:00 Registration (East Lobby) Ice-breaker/Cash Bar Mixer (East Lobby) 3:20 3:40 Wednesday...southeastern Nevada (H. Richard Blank) Central San Juan caldera cluster, Colorado-New stratigraphic and...sediment-hosted hydrothermal mineral localities in Escanaba Trough, Gorda Ridge (Janet L. Morton, William R. Normark...aspects of ocean-floor hydrothermal-vent fluids and massive sulfide chimneys from the southern Juan de Fuca...Fuca Ridge 8. Chaffee, M. A., Chemical zoning of mineral deposits as an exploration technique-The Red Mountain |  | | 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 |  | | Journal (article/letter/editorial) | | PALMER,1 and ANTHONY E. FALLICK2 1 School of Ocean and Earth Science, Southampton Oceanography Centre...Scottish Universities Environmental Research Centre, East Kilbride, Glasgow G75 0QF, Scotland (Received July...Geotraverse (TAG) hydrothermal field on the Mid-Atlantic Ridge. Clays separated from TAG metalliferous sediments...⬎220°C in a massive sulphide deposit near the East Pacific Rise. Chlorite is the most common product of basalt...the presence of Fe3⫹ results in the formation of goethite, rather than nontronite (Singer and Stoffers, |  | Dekov, Vesselin M., Kamenov, George D., Stummeyer, Jens, Thiry, Médard, Savelli, Carlo, Shanks, Wayne C., Fortin, Danielle, Kuzmann, Ernő, Vértes, Attila (2007) Hydrothermal nontronite formation at Eolo Seamount (Aeolian volcanic arc, Tyrrhenian Sea) Chemical Geology, 245 (1) 103-119 doi:10.1016/j.chemgeo.2007.08.006 | Journal (article/letter/editorial) | | Centre d'Informatique Geologique, Ecole des Mines de Paris, 35 rue St. Honore, 77305 Fontainebleau, France...1981; Malahoff et al., 1982; Butuzova et al., 1983; De Carlo et al., 1983; Murnane and Clague, 1983; Stoffers...depths of 1150, 1200 and 1450 m, whereas along the southern segment, two small cones occur at depths of 700... Dymond Hoffert and Eklund et al. (1978) (1978) De Carlo Alt et al. et al. (1983) (1987) Dill Stoffers...107 Explorer Ridge V.M. Dekov et al. / Chemical Geology 245 (2007) 103–119 Juan de Fuca Galapagos Galapagos |  | 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 |  | | Journal (article/letter/editorial) | | remobilization of Mn stored in the oxygen-depleted layer of ocean water and its migration and precipitation at the...located on the northern passive margin of the Tethys Ocean. Early Jurassic (Toarcian–Aalenian) deposits of...minor hematite, goethite, and apatite (Table 2). The clay minerals comprise a complex suite dominated...Quartz Quartz Quartz Quartz Calcite Feldspars, goethite Crinoidal grainstone Crinoidal grainstone Crinoidal...Anhydrite, dolomite, goethite, apatite, jarosite Calcite, dolomite, anhydrite, goethite, hematite, apatite |  | Toner, Brandy M., Santelli, Cara M., Marcus, Matthew A., Wirth, Richard, Chan, Clara S., McCollom, Thomas, Bach, Wolfgang, Edwards, Katrina J. (2009) Biogenic iron oxyhydroxide formation at mid-ocean ridge hydrothermal vents: Juan de Fuca Ridge. Geochimica et Cosmochimica Acta, 73 (2) 388-403 doi:10.1016/j.gca.2008.09.035 | Journal (article/letter/editorial) | | oxyhydroxide formation at mid-ocean ridge hydrothermal vents: Juan de Fuca Ridge Brandy M. Toner a,*, Cara...Department of Biological Sciences, University of Southern California, Los Angeles, CA, USA g Department...Department of Earth Sciences, University of Southern California, Los Angeles, CA, USA Received 22 May 2008; accepted...assemblages at the Main Endeavor Segment of the Juan de Fuca Ridge. The biofilms were distributed heterogeneously...2-line ferrihydrite, 6-line ferrihydrite, and goethite, were not detected in the biogenic iron oxyhydroxide |  | | Journal (article/letter/editorial) | | insoluble Fe oxy-hydroxide minerals including goethite and hematite as well as sulphates such as jarosite...Fe-oxide and Fe-oxyhydroxide minerals such as goethite and hematite as shown by Equations 1.3 and 1.4...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 |  | | Report (issue) | | RESULTS OF THE 1986 Sea Cliff DIVE PROGRAM, Escanaba Trough Robert A. Zierenberg 1 , Janet L. Morton 1...samples.......10 Physiographic map of the Escanaba Trough..............................11 Bathymetric...established the basic geologic setting of the Escanaba Trough and provided detailed information on the SESCA...ACKNOWLEDGEMENTS The Escanaba Trough dive program was coordinated by the Gorda Ridge Technical Task Force...NESCA sites are two of several areas in the Escanaba Trough where volcanic edifices along the spreading |  | Maslennikov, V.V., Maslennikova, S.P., Large, R.R., Danyushevsky, L.V., Herrington, R.J., Ayupova, N.R., Zaykov, V.V., Lein, A.Yu., Tseluyko, A.S., Melekestseva, I.Yu., Tessalina, S.G. (2017) Chimneys in Paleozoic massive sulfide mounds of the Urals VMS deposits: Mineral and trace element comparison with modern black, grey, white and clear smokers. Ore Geology Reviews, 85. 64-106 doi:10.1016/j.oregeorev.2016.09.012 | Journal (article/letter/editorial) | | Nakhimosvsky av., 36, Moscow f TE 117997 Russia John de Laeter Centre, Department of Imaging and Applied...associated with serpentinites of the Mid-Atlantic Ridge. The chimneys from the Buribay deposit are similar...to the black and clear smokers from the Okinawa Trough. Mineral assemblages are controlled by the combination...deposits. Original LA-ICP-MS data on smokers from the Pacific and Atlantic oceans are used for comparison with...dacite–rhiolite unit close to basalt basement of the East Magnitogorsk island arc, whereas Uzelga-1, Talgan |  | Sun, Zhilei, Wu, Nengyou, Cao, Hong, Xu, Cuiling, Liu, Liping, Yin, Xijie, Zhang, Xianrong, Geng, Wei, Zhang, Xilin (2019) Hydrothermal metal supplies enhance the benthic methane filter in oceans: An example from the Okinawa Trough. Chemical Geology, 525. 190-209 doi:10.1016/j.chemgeo.2019.07.025 | Journal (article/letter/editorial) | | methane filter in oceans: An example from the Okinawa Trough Zhilei Sun, Nengyou Wu, Hong Cao, Cuiling Xu,...methane filter in oceans: An example from the Okinawa Trough, Chemical Geology, https://doi.org/10.1016/j.chemgeo...methane filter in oceans: An example from the Okinawa Trough Zhilei Suna,b*, Nengyou Wua,b**, Hong Caoa,b, Cuiling...cold seeps on the western slope of the Okinawa Trough (OT), a semi-enclosed back-arc basin with cold...evidence of a close genetic relationship between goethite and authigenic carbonates, likely indicating the |  | | 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 |  | | Book | | 01636083 0 geny G. Gurvich Sediments of the World Ocean Fundamental Theory of Deep-Sea Sedimentation 4V... Gurvich Metalliferous Sediments of the World Ocean Fundamental Theory of Deep-Sea Hydrothermal Sedimentation... Gurvich Metalliferous Sediments of the World Ocean Fundamental Theory of Deep-Sea Hydrothermal Sedimentation...1. Metalliferous sediments from the Southeast Pacific.7 1.1.1. Conditions of formation.7 1.1.2. Lithologic...part of the East Pacific Rise.51 1.3. Metalliferous sediments from the Juan de Fuca Ridge.61 1.4. Metalliferous |  | | Book | | proceedings of the Gold '86 meeting in Toronto, the Pacific Rim Congress '87 in Gold Coast, Australia, and...Browne, A.H.C. Carter, H. Colley, D.S. Cronan, M.J. de Wit, P.I. Eimon, W.R. Fitches, A.O. Fuller, A.P....epithermal deposits in the Western Great Basin and Pacific Northwestern United States. Administratively, he...and exploration in Europe, Africa, and the Middle East. Professor D.1. Groves Key Centre for Teaching...exploration for hydrothermal vents in the Indian Ocean and studies of the geology and mineralogy of sulphide |
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