 | | Journal (article/letter/editorial) | | vent fluids. Twenty-three samples of chalcopyrite, pyrite, sphalerite, barite and anhydrite from hydrothermal...chimneys from four seafloor sites, Axial Seamount ŽJuan de Fuca Ridge., the Vai Lili vent field ŽLau Basin...hydrothermal field ŽMid-Atlantic Ridge., and the 218N vent field ŽEast Pacific Rise., as well as of pyritermarcasite...data of samples from the ASHES vent field at Axial Seamount define an inclined array consistent with phase...scale of several years Že.g. 218N vent field, East Pacific Rise; Campbell et al., 1988.; however, other systems |  | | Journal (article/letter/editorial) | | com/loi/tigr20 SEDIMENTATION IN THE RIFT ZONE OF THE JUAN DE FUCA RIDGE a a a Yu. A. Bogdanov , I. V. Khvorova...(1989) SEDIMENTATION IN THE RIFT ZONE OF THE JUAN DE FUCA RIDGE, International Geology Review, 31:8, 753-760... SEDIMENTATION IN THE RIFT ZONE OF THE JUAN DE FUCA RIDGE Yu. A. Bogdanov, I. V. Khvorova, V. V. Serova...from "Sedimentatsiya v riftovoy zone khrebta Khuan de Fuka," Izvestiya AN SSSR, seriya geologicheskaya...the 1986 Soviet expedition to the Juan de Fuca ridge, off the Pacific Northwest coast of the United States |  | Zeng, Zhigang, Ma, Yao, Chen, Shuai, Selby, David, Wang, Xiaoyuan, Yin, Xuebo (2017) Sulfur and lead isotopic compositions of massive sulfides from deep-sea hydrothermal systems: Implications for ore genesis and fluid circulation. Ore Geology Reviews, 87. 155-171 doi:10.1016/j.oregeorev.2016.10.014 | Journal (article/letter/editorial) | | fields in the East Pacific Rise (EPR), Mid-Atlantic Ridge (MAR), Central Indian Ridge NU (CIR), Southwest...Southwest Indian Ridge (SWIR), and North Fiji Basin (NFB). The sulfur MA isotopic compositions of the...sub-seafloor hydrothermal systems in sediment-free mid-ocean ridges and mature back-arc basins. Furthermore,...minerals in the super-fast and fast spreading mid-ocean ridges (MORs) exhibit less spread in their the δ34S...from modern seafloor hydrothermal systems in mid-ocean ridges (MORs) D and back-arc basins (BABs) have |  | | Journal (article/letter/editorial) | | GeologicDevelopmentof Ridge Crests and Sulfide Depositsin the Northeast Pacific Ocean* ELLEN S. KAPPEL**...edpillowlavasaredominant(e.g.,southernExplorer Ridge).Sulfidedeposition duringstagei occursimmediatelyadjacentto...than do thosein stage 3. Axial Seamount,which straddlesJuande Fuca Ridge andis the westernterminationof...heavilysedimentedfailedrifts(e.g.,MiddleValleyof Endeavour Ridge)are the largest(tensof millionsof metric tons)andare...E. S.KAPPELANDJ. M. FRANKLIN areas,and at Axial Seamount,the exceptionallyhigh permeabilityin the sheetlava |  | | Journal (article/letter/editorial) | | of hydrothermal origin from the Central Indian Ocean b M. Halbach a,) , P. Halbach a , V. Luders ¨ a...in an extinct vent field in the Central Indian Ocean. There are two kinds of silica-rich rocks: a jasper...by sphalerite, and to a lesser extent by barite, pyrite and traces of chalcopyrite, and an opalite which...mean values of 6.1% for sphalerite and 5.7% for pyrite indicating a mixture of predominantly basaltic...at 63.2 8C. The relationship between the massive pyrite- and chalcopyrite-ores from the extinct chimney |  | | Journal (article/letter/editorial) | | of hydrothermal massive sulfides from the Juan de Fuca Ridge Kim Hyun Kim 1 and Gary M. McMurtry Department...Department of Oceanography, School of Ocean and Earth Sciences and Technology, University of Hawaii at...fields on the Endeavour Segment and Axial Seamount of the Juan de Fuca Ridge. 21°pb activities are mostly below...21°pb and Pb. For the hydrothermal fluid in Axial Seamount, a residence time of 10-20 years is estimated...concentrically sectioned sulfide chimney from Axial Seamount yielded mean radial growth rates ranging from |  | Langmuir, C., Humphris, S., Fornari, D., Van Dover, C., Von Damm, K., Tivey, M.K., Colodner, D., Charlou, J.-L., Desonie, D., Wilson, C., Fouquet, Y., Klinkhammer, G., Bougault, H. (1997) Hydrothermal vents near a mantle hot spot: the Lucky Strike vent field at 37°N on the Mid-Atlantic Ridge. Earth and Planetary Science Letters, 148 (1) 69-91 doi:10.1016/s0012-821x(97)00027-7 | Journal (article/letter/editorial) | | Lucky Strike vent field at 37’N on the Mid-Atlantic Ridge C. Langmuir ‘,*, S. Humphris b, D. Fornari b, C...Fisheries ’ Department ’ Deportment Geophysics. and Ocean Sciences, University Unkersi&. Palisades, Institution...summit basin of a large seamount that forms the shallow center of a 65 km long ridge segment near 37”N on...on the Mid-Atlantic Ridge. The depth and chemistry of the ridge segment are influenced by the Azores hot...distribution of the relict sulfide deposits on the seamount summit in the areas investigated using DSV Alvin |  | | Report (chapter) | | years of hydrothermal fluids from 13~ on the East Pacific Rise F. M. S T U A R T 1'2 P. J. H A R R O P 1...Manchester M I 3 9PL, UK 21sotope Geology Unit, SURRC, East Kilbride G75 OQU, UK 3Department o f Geology, University...activity at 13~ on the East Pacific Rise. The 3He/aHe ratios are typical of mid-ocean ridge hydrothermal fluids...from the 25 000 year old mineralization on the SE Seamount suggests that the hydrothermal circulation occurred...implies that seamount volcanism and hydrothermal activity occurred simultaneously off-ridge, and that magmatic |  | | Journal (article/letter/editorial) | | sea-floor hydrothermal spire, Axial Seamount, Juan de Fuca Ridge, eastern Pacific Douglas E. Crowe and John...sea-floor hydrothermal spire, Axial Seamount, Juan de Fuca Ridge, eastern Pacific. In: R.S. Harmon and R.W...Sect.), 101: 63-70. The Axial Seamount site is located on the Juan de Fuca Ridge near the intersection...the Cobb-Eikenberg-Brown Bear seamount chain and the axial rift of the ridge. Several large (to 12 m ) silica...discussion 3. Axial Seamount The Axial Seamount site is located on the Juan de Fuca Ridge at 45°57'N, |  | 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) | | [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...that are adapted to active vents along the East Pacific Rise, indicating the higher potential toxicity...[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 |  | | Journal (article/letter/editorial) | | with the activity of hydrothermal vents on the ocean floor, the greatest progress during the last decade...fact that high-temperature mineragenesis on the ocean floor results in the formation of contemporary sulfide...sampled at the "hot" vents in the rift zones of the ocean. The appreciable collection of experimental data...high-temperature interaction with rocks of the ocean floor. While maintaining the overall level of mineralization...(200-350° C) fluids in widely separated mid-ocean, ocean-margin, and intercontinental rifts settings |  | | Book | | the Deep A Photographic Atlas of the Seafloor and Ocean Crust The deep oceans and global seafloor are truly...and fault zones in mountains a mile beneath the ocean surface, where bizarre landscapes host exotic life...components of the Earth’s ocean floor and the myriad environments found along mid-ocean ridges where new crust...Director of WHOI’s Deep Ocean Exploration Institute (DOEI), and was a Chair of the Ridge 2000 Program, a NSF-funded...NSF-funded national program studying mid-ocean ridges. Dr. Fornari is the author or co-author of over |  | Fouquet, Y., Knott, R., Cambon, P., Fallick, A., Rickard, D., Desbruyeres, D. (1996) Formation of large sulfide mineral deposits along fast spreading ridges. Example from off-axial deposits at 12°43′N on the East Pacific Rise. Earth and Planetary Science Letters, 144 (1) 147-162 doi:10.1016/0012-821x(96)00142-2 | Journal (article/letter/editorial) | | ridges. Example from off-axial deposits at 12’43’N on the East Pacific Rise Y. Fouquet a,*, R. Knott... Rickard b, D. Desbruyeres a a IFREMER, Centre de Bresi, BP 70, 29280 Plowant!, France b Department...CFI 3YE, UK ’ Isorope Geology Unit. S. II.R.R. C, East Kilbride G75 OQU, UK Received 23 August 1995: accepted...pit-crater at the top of a young seamount 2 km east of the axial ridge we discovered one of the largest...spreading ridge (12 cm/yr). Despite an overlap in composition between axial and off-axial deposits the |  | | Journal (article/letter/editorial) | | foundin samples fromtwo sulfidedeposits: the Axial Seamount(45057' N, 130002' W), and the southernExplorerRidge...silica,barite,andsphaleritefromthe top of the Axial Seamount depositgivesanalyses upto 6,700 ppbAu, averaging...calderaof the Axial Seamount,an activevolcanoon the spreading axisof the centralJuande Fuca Ridge,and (2) along...along the eastern axial valley of the southernExplorer Ridge.Thesedepositshavesimilarmorphology,mineralogy...mineralogyand geochemistry of gold-richsamplesfrom the Axial Seamountandthe southernExplorerRidge 1867 1868 |  | | Journal (article/letter/editorial) | | Middle Valley at the Juan de Fuca Ridge, and in the TAG deposit at the Mid-Atlantic Ridge. Currently, mining...sulphides and vent biota at the crest of the East Pacific Rise at 21◦ N in 1979 (Francheteau et al . 1979;...ambient seawater. The metal sulphides including pyrite, sphalerite, and chalcopyrite eventually accumulate...The TAG hydrothermal mound at the Mid-Atlantic Ridge at 26◦ N, for example, has a diameter of ca. 200...ca. 50 m and is characterized by a black smoker complex, the top of which consists of several black smokers |  | | Journal (article/letter/editorial) | | structures on the Endeavour Segment of the Juan de Fuca Ridge Margaret K. Tivey and John R. Delaney School...that sulfide blocks 0.5 m across, dredged from the axial valley of the Endeavour Segment at 47°57'N, are...along normal faults at the base of the western axial valley wall, and are distributed for about 200 m...m along strike paralleling the 020 trend of the ridge crest. High-temperature fluids (350 to more than...submersible. These samples represent massive, complex portions of the sulfide structures which were not |  | | Report (chapter) | | 3 YE, UK 2Isotope Geosciences Unit, S U R R C , East Kilbride, Glasgow G75 OQU, UK 3 G E O M A R Technologie...II cruise. The main growth stage is dominated by pyrite and chalcopyrite, forming granular aggregates from...Fouquet et al. (1988) at off-axis sites on the East Pacific Rise at 13~ (2000 to 20000 years, Lalou et al.... 1985); by AIt (1988) at the Green Seamount (70000 to 140 000 years, Alt et al. 1987); and by Scott et...et al. (1991) from the Southern Explorer Ridge (undated). This study is aimed at investigating in detail |  | | 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 |  | James, Rachael H., Green, Darryl R.H., Stock, Michael J., Alker, Belinda J., Banerjee, Neil R., Cole, Catherine, German, Christopher R., Huvenne, Veerle A.I., Powell, Alexandra M., Connelly, Douglas P. (2014) Composition of hydrothermal fluids and mineralogy of associated chimney material on the East Scotia Ridge back-arc spreading centre. Geochimica et Cosmochimica Acta, 139. 47-71 doi:10.1016/j.gca.2014.04.024 | Journal (article/letter/editorial) | | mineralogy of associated chimney material on the East Scotia Ridge back-arc spreading centre Rachael H. James...mineralogy of associated chimney material on the East Scotia Ridge back-arc spreading centre, Geochimica et Cosmochimica...of associated 2 chimney material on the East Scotia Ridge back-arc spreading centre 3 Rachael H. James1*...University, London, Ontario, N6A 3K7, Canada 3 Ocean and Earth Science, National Oceanography Centre...European Way, Southampton, SO14 3ZH, Current address: Ocean and Earth Science, National Oceanography Centre |  | | 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 |  | Portner, Ryan A., Clague, David A., Helo, Christoph, Dreyer, Brian M., Paduan, Jennifer B. (2015) Contrasting styles of deep-marine pyroclastic eruptions revealed from Axial Seamount push core records. Earth and Planetary Science Letters, 423. 219-231 doi:10.1016/j.epsl.2015.03.043 | Journal (article/letter/editorial) | | deep-marine pyroclastic eruptions revealed from Axial Seamount push core records Ryan A. Portner a,b,∗ , David...online 4 May 2015 Editor: T. Mather Keywords: seamount deep-marine explosive volcanism lithofacies a...lithofacies on a recently active seamount. Lithofacies from Axial Seamount record two styles of pyroclastic...and texture of lithic components (Fe–Mg clays, pyrite, epidote, actinolite, altered glass, basalt/diabase...eruptions of basalt occur throughout the world’s ocean basins, and are preserved by modern to ancient deposits |  | Chen, Chen-Tung Arthur, Zeng, Zhigang, Kuo, Fu-Wen, Yang, Tsanyao Frank, Wang, Bing-Jye, Tu, Yueh-Yuan (2005) Tide-influenced acidic hydrothermal system offshore NE Taiwan. Chemical Geology, 224 (1) 69-81 doi:10.1016/j.chemgeo.2005.07.022 | Journal (article/letter/editorial) | | vent field of about 0.5 km2 in area within 1 km east of Kueishantao islet, at 121855VE, 24850VN, near...near Taiwan to the east of the Ilan Plain. Two seismic belts are situated near the axial center of the southern...with some a-phase crystals and trace amounts of pyrite comprise these mounds. Apart from sulfur, large...analogous to values in non-sediment-covered Mid-Ocean Table 1 Sulfur isotopic compositions of native sulfur..., 1998a Ridge (MOR) hydrothermal fields e.g., Axial Seamount, Southern Juan de Fuca Ridge, EPR, Snake |  | | Journal (article/letter/editorial) | | 147 Ž1998. 77–88 Mantle-derived 40Ar in mid-ocean ridge hydrothermal fluids: implications for the source...sulfides from 138N, East Pacific Rise. Fluid inclusion 3 Her4 He are typical of mid-ocean ridge vent fluids implying...The data displays a bimodality similar to mid-ocean ridge basalt ratios. The low Ž4 Her40Ar. mantle volatiles...flux calculated from highly vesiculated mid-ocean ridge basalt Ž1.6–4.2 = 10 7 mol ay1 .. This cannot...Science B.V. All rights reserved. Keywords: East Pacific Rise; Hydrothermal sulfides; He and Ar isotopes; |  | | Report (chapter) | | Woodlark and eastern Manus basins of the western Pacific S T E V E N D. SCOq"-I "z & R A Y M O N D A. B...prominent 20 km long and 250-350 m high volcanic ridge. The ridge is andesitic in its lower reaches, dacitic...forming from low temperature fluids on Franklin Seamount, an axial basaltic andesite volcano near the tip of...to 21 ppm), barite-silica spires. The Franklin Seamount deposits are thought to cap a disseminated sulphide...failed massive sulphide system. Both Franklin Seamount and PACMANUS provide models for ancient ores on |  | | Report (chapter) | | on May 31, 2015 Venting from the Mid-Atlantic Ridge at 37~ hydrothermal site G. P. K L I N K H A M M...Lucky Strike hydrothermal field on the Mid-Atlantic Ridge (MAR) at 37~ was discovered in 1992 during dredging...out as part of the FARA Program (French-American Ridge Atlantic). The vent field at Lucky Strike lies in...between three cones that form the summit of an axial seamount. The summit rises 400 m above the rift valley...alteration. Hydrothermal fluxes from mid-ocean ridges affect ocean chemistry, the geology and mineralization |
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