 | | Journal (article/letter/editorial) | | 1985. Riatcd in U.S.A. Chemical evolution of mid-ocean ridge hot springsā Division of Geological and Planetary...the East Pacific Rise at 2 I āN and 10 hot springs from the southern trough of the Guaymas Basin, Gulf...unaltered sediment from DSDP hole 477 in the Guaymas Basin. Results of the calculations indicate that conductive...accounts for the s&&ion composition of one vent on the East PacificRise and seveml vents in GuaymasBasin. Mixing...from the East Pacific Rise and drill cores in Guaymas Basin. The hypothesis that Guaymas Basin hydrothermal |  | John, Seth G., Rouxel, Olivier J., Craddock, Paul R., Engwall, Alison M., Boyle, Edward A. (2008) Zinc stable isotopes in seafloor hydrothermal vent fluids and chimneys. Earth and Planetary Science Letters, 269 (1) 17-28 doi:10.1016/j.epsl.2007.12.011 | Journal (article/letter/editorial) | | numerous vents at 9ā10Ā°N and 21Ā°N on the East Pacific Rise (EPR), the TAG hydrothermal field on the Mid-Atlantic...Mid-Atlantic Ridge, and in the Guaymas Basin. Fluid Ī“66Zn values measured at these sites range from +0...basalt-hosted mid-ocean ridges, including from the fast-spreading, unsedimented East-Pacific Rise (9ā10Ā°N and...EPR), from the sedimented Gulf of California (Guaymas basin) and from the slow spreading MidAtlantic ridge...(Von Damm et al., 1985a). Three of the vent sites (Ocean Bottom Seismometer (OBS), South West (SW), and Hanging |  | Carranza-Edwards, A., Rosales-Hoz, L., Aguayo-Camargo, J.E., Lozano-Santa Cruz, R., Hornelas-Orozco, Y. (1990) Geochemical study of hydrothermal core sediments and rocks from the Guaymas Basin, Gulf of California. Applied Geochemistry, 5 (1) 77-82 doi:10.1016/0883-2927(90)90038-7 | Journal (article/letter/editorial) | | hydrothermal core sediments and rocks from the Guaymas Basin, Gulf of California A. CARRANZA-EDWARDS,L. ROSALES-HOZand...geochemical study of core sediments from the Guaymas Basin was undertaken by X-ray analysis and showed...showed minerals such as barite, gypsum, wurtzite, chalcopyrite, marcasite, galena and calcite. The random relation...hydrothermal activity over short distances in the Guaymas Basin is due to active extensional tectonics, the...data from the East Pacific Rise area (Mimar II-A, 20"48.2'N, study of the Guaymas Basin was undertaken |  | | Journal (article/letter/editorial) | | variations in submarine hydrothermal deposits of Guaymas Basin, Gulf of California, USA J.M. PETER'-* and...and mound samples in the southern trough of Guaymas Basin, Gulf of California, USA. 634S values of sulfides...calcite-rich chimneys in the southern trough of Guaymas Basin were enriched in I80 with respect to seawater...geographic location within the southern trough of Guaymas Basin are best explained by variations in water/rock...first discovered in the northern trough of Guaymas Basin (LC~NSDALE et al., 1980). In August 1980, extensive |  | 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) | | for different hydrothermal fields in the East Pacific Rise (EPR), Mid-Atlantic Ridge (MAR), Central Indian... Southwest Indian Ridge (SWIR), and North Fiji Basin (NFB). The sulfur MA isotopic compositions of...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 Ī“34S...from modern seafloor hydrothermal systems in mid-ocean ridges (MORs) D and back-arc basins (BABs) have |  | Davis, Earl E., Goodfellow, Wayne D., Bornhold, Brian D., Adshead, John, Blaise, Bertrand, Villinger, Heiner, Le Cheminant, Gina M. (1987) Massive sulfides in a sedimented rift valley, northern Juan de Fuca Ridge. Earth and Planetary Science Letters, 82 (1) 49-61 doi:10.1016/0012-821x(87)90106-3 | Journal (article/letter/editorial) | | a n d G i n a M . L e C h e r n i n a n t 2 1 Pacific Geoscience Centre, Geological Survey of Canada...include pyrrhotite, pyrite, marcasite, sphalerite, chalcopyrite, iss (intermediate solid solution in the Cu-Fe-Zn-S... pyrrhotite, pyrite, marcasite, sphalerite, chalcopyrite, iss ("intermediate solid solution" in the Cu-Fe-Zn-S...lamellae of chalcopyrite distributed along its crystallographic axis (Fig. 8h). Chalcopyrite also forms..."'exsolution" of chalcopyrite within iss at the core (Fig. 8h). Analyses of chalcopyrite never quite reach |  | | Journal (article/letter/editorial) | | sediment-poor NU Jade fields), the Manus back-arc basin (felsic-hosted PACMANUS and basalt-hosted Vienna...fO2-fS2 states consistent with the bornite-pyrite-chalcopyrite assemblages. These redox conditions result from...the PACMANUS and Vienna Woods fields in the Manus Basin, and in the Kairei and Edmond fields on the Central...N, 127Ā°04Ź¹ E in the Mid-Okinawa Trough back-arc basin (Fig. 1; Ishibashi et al., 2015a). These active...NU 2.2 PACMANUS and Vienna Woods fields, Manus Basin MA The PACMANUS hydrothermal field, located at |  | Lisitsyn, A. P., Bogdanov, Yu. A., Zonenshayn, L. P., Kuz'min, M. I., Podrazhanskiy, A. M. (1989) āBLACK SMOKERSā IN THE GULF OF CALIFORNIA. International Geology Review, 31 (6) 541-555 doi:10.1080/00206818909465907 | Journal (article/letter/editorial) | | Observations of subĀ marine thermal vents in the Guaymas Basin using the Pisces manned submersible and subsequent...To study the hydrothermal ore process related to ocean formation, a joint geological-geophysical and geochemical...Southern Trough of the Guaymas Basin We examined the Southern Trough of the Guaymas Basin in the greatest detail...west by a steep wall about 100 m high, and on the east by a whole system of scarps 20-25 m high, forming...1000 times greater than in the rifts in the open ocean. As a result, the rifts are completely covered with |  | McDermott, Jill M., Ono, Shuhei, Tivey, Margaret K., Seewald, Jeffrey S., Shanks, Wayne C., Solow, Andrew R. (2015) Identification of sulfur sources and isotopic equilibria in submarine hot-springs using multiple sulfur isotopes. Geochimica et Cosmochimica Acta, 160. 169-187 doi:10.1016/j.gca.2015.02.016 | Journal (article/letter/editorial) | | Areas studied include the Eastern Manus Basin and Lau Basin back-arc spreading centers and the unsedimented...basalt-hosted Southern East Paciļ¬c Rise (SEPR) and sediment-hosted Guaymas Basin mid-ocean ridge spreading centers...centers. Chalcopyrite and dissolved hydrogen sulļ¬de (H2S) d34S values range from 5.5& to +5.6& in Manus...Manus Basin samples, +2.4& to +6.1& in Lau Basin samples, and +3.7& to +5.7& in SEPR samples. Values of...cubanite and H2S range from 1.4& to +4.7& in Guaymas Basin samples. Multiple sulfur isotope systematics |  | Lonsdale, P.F., Bischoff, J.L., Burns, V.M., Kastner, M., Sweeney, R.E. (1980) A high-temperature hydrothermal deposit on the seabed at a gulf of California spreading center. Earth and Planetary Science Letters, 49 (1) 8-20 doi:10.1016/0012-821x(80)90144-2 | Journal (article/letter/editorial) | | dive on a turbidite-covered spreading axis in Guaymas Basin photographed and sampled extensive terraces...hydrothermal discharges, which was strongest for Guaymas Basin in the central gulf, was limited to anomalies...geologic dives onto the two spreading axes in Guaymas Basin [21]. The only rock outcrops located by sonar...margin of the Pacific plate, at the crest of the East Pacific Rise [7,8]. In Guaymas Basin, Williams et... 5 !7O IZOāN I27O \ 10ā N \ 1/ \ EAST PACIFIC RISE 21āN HYDRFq;yE;MA ( _I 27O \ā OOāN \ L |  | | Journal (article/letter/editorial) | | mixing, the paragenetic sequence revealed is: chalcopyrite, anhydrite, pyrrhotite, pyrite, sphalerite,...venting from the seafloor at 2 1āN on the East Pacific Rise (SPIESS et al., 1980) provides dramatic confirmation...vents occur, primarily on the Galapagos, East Pacific Rise and Juan de Fuca ridges (EDMOND et al. 1979a...HAYMON, 1983; OUDIN, 1983; SPIESS et al., 1980; EAST PACIFICRISESTUDY GROUP, 198 1; BALLARD et al., 198...active chimneys is often composed primarily of chalcopyrite and sometimes cubanite (HAYMOY. 1983: HAYMON |  | | Report (chapter) | | contrast, conventional oils are products derived from basin evolution and are generated contemporaneously with...conventional oils are generated at a rate that is tied to basin subsidence and increasing geothermal gradient occurring...ridge Guaymas Basin, Escanaba Trough, Middle Valley, Red Sea Warm up to c. 400Ā° C Mid-Ocean ridge (no...sediment) Off-axis flanks and basins Back-arc East Pacific Rise, MidAtlantic Ridge Warm up to c. 350Ā° C ...products Sedimented submarine systems G u a y m a s Basin (Fig. 1) is an active oceanic spreading centre (2000 |  | Layton-Matthews, D., Peter, J. M., Scott, S. D., Leybourne, M. I. (2008) Distribution, Mineralogy, and Geochemistry of Selenium in Felsic Volcanic-Hosted Massive Sulfide Deposits of the Finlayson Lake District, Yukon Territory, Canada. Economic Geology, 103 (1) 61-88 doi:10.2113/gsecongeo.103.1.61 | Journal (article/letter/editorial) | | (Bradshaw, 2003; Bradshaw et al., 2008). back-arc basin (Piercey et al., 2002, 2006). The estimated resources...to have formed within an ensialic back-arc rift basin that evolved to sea-floor spreading (Piercey et...composed predominantly of pyrite, sphalerite, minor chalcopyrite, galena, pyrrhotite, barite, and trace arsenopyrite...replacement mineralization comprising of pyrite, chalcopyrite, sphalerite, and galena, whereas hanging-wall...sphalerite, minor galena and pyrrhotite, and trace chalcopyrite. Stratigraphic footwall rocks (i.e., deposit |  | | Journal (article/letter/editorial) | | chimneys and mounds from the southern trough of Guaymas Basin, Gulf of California J. M. PETER,B. R. T. SIMONEITand...chimneys and mounds in the southern trough of Guaymas Basin, central Gulf of California. The inclusions...petroleum and its transport to the seafloor in the Guaymas Basin coincide with those necessary for the precipitation...in the Guaymas Basin hydrothermal system. INTRODUCTION ThE SOUTHERN trough of Guaymas Basin, central...(LoNSDALE, 1985; LONSDALEand BECKER, 1985). The basin has an unusually high sedimentation rate of 1-2 |  | 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) | | buried by sediments are relatively rare in the ocean basins today, yet remain of particular interest...years later, in 1996, the site was drilled by the Ocean Drilling Program (ODP) (Fouquet et al., 1998). The...dive program in 1988 (Campbell et al., 1994), and Ocean Drilling Program (ODP) Leg 169 in1996 (Fouquet et...sediment-covered ridges, Middle Valley and Guaymas Basin (Table 3). As H2 is believed to be mostly derived...differences between the CO2 values we report here for Guaymas Basin and those of Welhan and Lupton (1987). The concentrations |  | | 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...(200-350Ā° C) fluids in widely separated mid-ocean, ocean-margin, and intercontinental rifts settings |  | | Journal (article/letter/editorial) | | versus Mg for samples collected from (a) 21Ā°N East Pacific Rise (EPR) in 1981 and (b) the southern Juan de...Oyster Beds (OB) < 13(350) seawater 21Ā°N East Pacific Rise (EPR) National Geographic Society (NGS) 2600...2000 6 ļæ½500 1982,1985,1988 Sediment cover 273 Ocean Bottom Seismograph (OBS) 350 Southwest (SW) 355...355 Hanging Gardens (HG) 351 Guaymas Basin I 291 very organic- and 2 291 carbonate rich 3 ...m) geographical distances. While the 21 oN East Pacific Rise (EPR), II-l 3Ā°N EPR, southern Juan de Fuca |  | 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) | | Hydrothermal Field in the Okinawa Trough Back-Arc Basin Ryohei Suzuki1,3, Jun-Ichiro Ishibashi1, Miwako...consisting of sphalerite, wurtzite, galena, chalcopyrite, pyrite, and marcasite; (iii) Ba-As chimneys...magnesite) and sulfides (sphalerite, galena, chalcopyrite, alabandite, and minor amount of tennantite...submarine hydrothermal system within a back-arc basin in the continental margin may be considered as developed...systems in the arcāback-arc setting of the western Pacific would provide a good test field for discussing |  | | Journal (article/letter/editorial) | | Universities Research and Reactor Centre , Rankine Avenue, East Kilbride , G75 OQF, Scotland, United Kingdom Published...Universities Research and Reactor Centre, Rankine Avenue, East Kilbride, G75 OQF Scotland, United Kingdom Abstract...maximum dimension, mainly consists of pyrite and chalcopyrite, and locally contains abundant magnetite, pyrrhotite...systematics of the Ana Yatak deposit. Pyrite and chalcopyrite from the ore and pyrite from the host rocks...were found to vary from +4.5 to +10.0ā°. For the chalcopyrite-pyrite pairs, there is a clear relationship |  | | Report (chapter) | | sites (discussed later), and how little Phanerozoic ocean floor has been obducted, without major metamorphism...environment of formation was different to the mid-ocean ridge and arc settings of VMS deposits. LITTLE...communities. In. MILLS,R. A. & HARRISON, K. (eds) Modern Ocean Floor Processes and the Geological Record, Geological...K/P: P (K;T) ~ - ~ ( ~ ' ) Ocean system: I y. Ā° U = Uralian, P = Pacific, T = Tethys J " Ā° [ / ~(~ ...fossiliferous VMS deposits. Ages of the deposits and the ocean system in which they formed in brackets. P = Palaeocene |  | | Report (volume) | | foraminifers from Escanaba Trough, northeast Pacific Ocean ..............................................Gorda Ridge and other mid-ocean ridge spreading centers in northeast Pacific Ocean .............. .........from sediment-hosted, back-arc basin, and sediment-starved mid-ocean ridge environments ........................ 13.5. Strontium versus barium in Guaymas Basin and Escanaba Trough cores .......................................... Escanaba Trough and Guaymas Basin sediments: selected chemical and mineral components |  | | Journal (article/letter/editorial) | | conductive heat flow in the Southern Trough of Guaymas Basin Peter Lonsdale and Keir Becker Scripps Institution...that m a r k the spreading axes in G u a y m a s Basin (Fig. 1) 0012-821x/85/$03.30 Ā© 1985 Elsevier Science...geophysical studies of several sites in G u a y m a s Basin with the Deep T o w Vehicle [6], whose sensors i...Geographic location and tectonic setting of Guaymas Basin and the Southern Trough survey area. Spreading...sulfides (pyrrhotite with associated sphalerite, chalcopyrite and galena), all soaked in hydrothermal petroleum |  | | Journal (article/letter/editorial) | | sulphide-forming hydrothermal vents on the East Pacific Rise, from ancient vein deposits and from metamorphosed...not (particularly metamorphosed ores in which chalcopyrite is in contact with sphalerite). Compositions...chimneys forming on the sea-floor of the East Pacific Rise and ancient vein deposits, as well as from...such as in equilibrium with bornite + pyrite + chalcopyrite (fig. 1) have a honey yellow to light brown...or pyrite. Abbreviations: bn, bornite; cpy, chalcopyrite (or intermediate solid solution); po, pyrrhotine; |  | Zaw, Khin, Gemmell, J.B., Large, R.R., Mernagh, T.P., Ryan, C.G. (1996) Evolution and source of ore fluids in the stringer system, Hellyer VHMS deposit, Tasmania, Australia: evidence from fluid inclusion microthermometry and geochemistry. Ore Geology Reviews, 10 (3) 251-278 doi:10.1016/0169-1368(95)00026-7 | Journal (article/letter/editorial) | | pyrite, and carbonate with minor amounts of chalcopyrite, sphalerite and galena, Stage 2B veins with...between 8-11 NaCI equiv, wt% in all Stage 2 veins. Chalcopyrite-bearing primary fluid inclusions have been recognised...body with dimensions of 800 m north-south and 200 m east-west with an average vertical thickness of 45 m...deposit contains pyrite, sphalerite, galena, chalcopyrite, arsenopyrite with minor tetrahedrite, with...2A QZ-CO-CL 3 QZ-SP 2C 3 4 5 Pyrite Chalcopyrite 4 2B _l Bphalerite Galena 2C BA 2B CP-GN-PY-SP |  | | Journal (article/letter/editorial) | | the material of ferromanganese crusts (FMC) of Pacific seamounts and hydrogen sulfide at temperatures...promising type of solid mineral resources in the World Ocean, have long become and serving as subject for the...carried out for the modeling of FMC formation in ocean (Varentsov et al., 1978). However, capacity of FMC...water FMC sample from the bottom of the northern Pacific, D. MĆ¼ller reported the detection of pyrite crystals...croscopic pyrite inclusions during the study of Pacific FMCs with a transmission electron microscope, and |
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