 | | Journal (article/letter/editorial) | | Geochemical time series of hydrothermal fluids from the slowspreading Mid-Atlantic Ridge: Implications of medium-term...Geochemical time series of hydrothermal fluids from the slow-spreading Mid-Atlantic Ridge: Implications of medium-term...Geochemical time series of hydrothermal fluids from the slow-spreading MidAtlantic Ridge: Implications of medium-term...investigations of hydrothermal fluids from different geological settings at the slow-spreading Mid-Atlantic Ridge...activity is limited, such as the Logatchev-1 hydrothermal field at 14°45’N. na We also found the 407°C |  | Pertsev, A. N., Bortnikov, N. S., Vlasov, E. A., Beltenev, V. E., Dobretsova, I. G., Ageeva, O. A. (2012) Recent massive sulfide deposits of the Semenov ore district, Mid-Atlantic Ridge, 13°31′ N: Associated rocks of the oceanic core complex and their hydrothermal alteration. Geology of Ore Deposits, 54 (5) 334-346 doi:10.1134/s1075701512050030 | Journal (article/letter/editorial) | | Ore District, MidAtlantic Ridge, 13°31' N: Associated Rocks of the Oceanic Core Complex and Their Hydrothermal...slowspread ing MidAtlantic Ridge are crucial for the structural control of large hydrothermal systems, including...oceanic core complex enclosing the Semenov1, 2, 3, 4, and 5 inac tive hydrothermal sulfide fields...recently discovered on the MidOceanic Ridge at 13°31′ N. The oceanic core complex is composed of serpentinized...peridotites and sporadic gabbroic rocks, however, all hydrothermal fields reveal compositional indications of basaltic |  | | Journal (article/letter/editorial) | | 421 218 65406 MA ABSTRACT D Circulation of hydrothermal fluids within the oceanic crust is a major factor...massive sulfide have been reported along the mid-ocean ridges, showing AC CE effective mass transfer...at 250°C and 400 bars that placed an H2S-rich hydrothermal fluid into contact with four different rock...experiments showed serpentinization of olivine and magnetite formation. Plagioclase in troctolite experienced...resulting in NU andradite formation. The stability field of sulfide in the H2-H2S activity plane is diminished |  | Klein, F., Grozeva, N. G., Seewald, J. S., McCollom, T. M., Humphris, S. E., Moskowitz, B., Berquo, T. S., Kahl, W.-A. (2015) Experimental constraints on fluid-rock reactions during incipient serpentinization of harzburgite. American Mineralogist, 100 (4) 991-1002 doi:10.2138/am-2015-5112 | Journal (article/letter/editorial) | | underwent alteration forming serpentine, accessory magnetite, chlorite, and traces of calcite and heazlewoodite...serpentinization and H2 release in peridotite-hosted hydrothermal systems. Keywords: Serpentinization, phase relations...rates, reaction pathways, fracturing, hydrogen, hydrothermal experiment Introduction Serpentinization reactions...and fossil hydrothermal systems, using laboratory experiments, and theoretical models. Field investigations...numerous factors that influence the composition of hydrothermal fluids, such as rock composition, temperature |  | | Report (issue) | | Kasahara, Pavel Izbekov, and Johnathan Lees (Eds.) 173 Ocean Circulation: Mechanisms and Impacts—Past and Future...Ellen R. Stofan, and Thomas E. Cravens (Eds.) 177 Ocean Modeling in an Eddying Regime Matthew Hecht and...Hasumi (Eds.) 178 Magma to Microbe: Modeling Hydrothermal Processes at Oceanic Spreading Centers Robert... S. Reeve, and Lee D. Slater (Eds.) 185 Indian Ocean Biogeochemical Processes and Ecological Variability...John Gash, and Pedro Silva Dias (Eds.) 187 Surface Ocean–Lower Atmosphere Processes Corinne Le Quèrè and |  | | Journal (article/letter/editorial) | | Modeling of Au and Pt Coupled Transport by Chloride Hydrothermal Fluids at 350–450°C and 500–1000 Bar A. V. Zotova...dominant species of Au and Pt in high-temperature hydrothermal fluids (K(Au–Pt)) have been determined: 2 Au(cr)...factors affecting the Au/Pt concentration ratio in hydrothermal fluids and precipitated ores are temperature...An increase in sulfur fugacity in the stability field of Pt sulfides results in increase in the Au/Pt...1134/S1075701517050063 INTRODUCTION Ores of many hydrothermal deposits, which are a source of Au, also contain |  | | Journal (article/letter/editorial) | | subducted serpentinised mantle is serpentinised on the ocean floor settings. Yet this material is poorly represented...serpentinised by modified seawater in a shallow hydrothermal seafloor setting. The New Caledonia serpentinites...comparable in magnitude to that of subducted altered ocean crust Evans (2012), and dehydration of serpentinised...the Logatchev hydrothermal field, which are all on, or close to, the Mid-Atlantic Ridge (Paulick et al...(Alt and Shanks 1998; Agrinier et al. 1995), the ocean–continent transition of the Iberian margin Alt and |  | | Report (issue) | | Cu-Ni-CoPGE deposit in the Duluth Complex, which is a large mafic intrusive complex in northeastern Minnesota...consensus opinion is that metalliferous saline hydrothermal fluids were introduced at low to moderate temperatures...of bedrock). Ages of the deposits typically are mid-Tertiary to Holocene; some fossil Ni-Co laterites...segregation of sulfides and, in some deposits, hydrothermal mobilization into post-magmatic structures....deposits, high contents of cobalt formed by hydrothermal leaching, mobilization, and concentration into |  | 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) | | Fingerprint of the Irinovskoe Hydrothermal Sulfide Field, 13◦ 200 N, Mid-Atlantic Ridge Irina Melekestseva 1,...The Heavy-Metal Fingerprint of the Irinovskoe Hydrothermal Sulfide Institute of Mineralogy, South Urals...chimneys of the Irinovskoe hydrothermal sulfide field, 13◦ 200 N, Mid-Atlantic Ridge. Sulfide samples were...processing of seafloor hydrothermal sulfide fields. Field, 13◦ 200 N, Mid-Atlantic Ridge. Minerals 2022, 12...sulfides; smoker chimneys; hydrothermal sulfide fields; Mid-Atlantic Ridge Academic Editor: Pierfranco |  | | Journal (article/letter/editorial) | | Desert (CED). These units are characterized by magnetite and hematite-rich layers alternating with quartz-rich...andradite–rich garnet, epidote, ± calcite in the southern parts of CED, and chlorite stilpnomelane, and...and calcite in the north. Localized hydrothermal alteration affected most deposits and is manifested by...Al/(Al+Fe+Mn), which suggest a hydrogenous origin with hydrothermal contributions and low detrital component. Geochemical...land and Um Nar and Wadi Kareim closest to 2 hydrothermal vents. Host metavolcanic and metavolcaniclastic |  | | 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...explanations of how the various geological and hydrothermal features of the seafloor are formed through... Professor Karson has participated in numerous field projects and seafloor research cruises worldwide |  | | Report (volume) | | authorship of Carbon in Earth represents laboratory, field, and theoretical researchers from the full range...inheritance — MAGMA OCEAN CARBON CYCLE...............................184 Magma ocean carbon cycle during........................................184 Magma ocean carbon cycle after core formation.........................................................666 Hydrothermal vents and the deep subsurface: key settings...1 Hazen & Schiffries 2 Lithosphere Mid-ocean ridge Ocean ? Fluid circulation Possible microbial |  | | Report (issue) | | transportation (electric and hybrid cars). Until the mid-20th century, only about 15 metallic elements had...solubility of fluorite as a function of temperature for complex Na-Ca-Mg-Cl brines from ambient temperatures to...the future and a preliminary classification of hydrothermal fluorspar deposits by tectonic and magmatic...and coal deposits and other types of deposits in southern China...........................................basins in the Precambrian tectonic framework of southern Africa....................................... |
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