 | Dekov, V. M., Molin, G. M., Dimova, M., Griggio, C., Rajta, I., Uzonyi, I. (2007) Cosmic spherules from metalliferous sediments: A long journey to the seafloor. Neues Jahrbuch für Mineralogie - Abhandlungen, 183 (3) 269-282 doi:10.1127/0077-7757/2007/0073 | Journal (article/letter/editorial) | | metalliferous sediments of two spreading centers (Mid-Atlantic Ridge and East Pacific Rise) represent different...conic tail. Key words: iron cosmic spherules; Mid-Atlantic Ridge; East Pacific Rise. Introduction Occurrences...metalliferous sediments from two mid-ocean ridge settings (26˚ N Mid-Atlantic Ridge and 21˚ S East Pacific Rise)... Geological setting The Trans Atlantic Geotraverse (TAG) hydrothermal field (Rona et al. 1986) lies on...Index map showing the location of TAG area at the Mid-Atlantic Ridge. (B) Bathymetric map (based on Rona |  | | Report (chapter) | | Detailed geological studies of hydrothermal fields in the North Atlantic S. G. Krasnov, G. A. Cherkashev...Detailed geological studies of hydrothermal fields in the North Atlantic S. G . K R A S N O V 1, G. A....Institute of Geology and Mineral Resources of the Ocean, 1 A ngliysky A venue, 190121 St Petersburg, Russia...been carried out at the TAG and MARK hydrothermal fields of the Mid-Atlantic Ridge during research cruises...Association, St Petersburg. Detailed mapping of the MARK field (23~ allowed contouring of the massive sulphide |  | | Journal (article/letter/editorial) | | in seafloor hydrothermal systems: examples from mafic- and ultramafic-hosted hydrothermal fields at the...the slow-spreading Mid-Atlantic Ridge Jan Pašava & Anna Vymazalová & Sven Petersen Received: 16 October...group elements (PGEs) in massive sulfides and hematite–magnetite±pyrite assemblages from the recently...Pits hydrothermal field and in massive sulfides from the ultramafic-hosted Logatchev vent field both...both on the MidAtlantic Ridge was studied and compared to that from selected ancient volcanic-hosted massive |  | | Journal (article/letter/editorial) | | influences on concentrations of trace metals in hydrothermal fluids SIMONE METZ and JOHN H. TREFRY* Department...metals in hydrothermal solutions from the southern Juan de Fuca Ridge (SJFR) and the TAG Hydrothermal Field...Field on the Mid-Atlantic Ridge are influenced by the combined effects of source rock composition, brine–seawater...brine–seawater mixing and complex interplay among various metals and minerals deposited and remineralized...however, concentrations of Cu in 363°C fluids at the TAG site are well above values determined from seawater/basalt |  | | Report (volume) | | Hydrothermal Vents and Processes Geological Society Special Publications Series Editor A.J. FLEET... GEOLOGICAL SOCIETY SPECIAL PUBLICATION NO. 87 Hydrothermal Vents and Processes EDITED BY L. M. P A R...BAKER,E. T. & KLINKHAMMER,G. Regional setting of hydrothermal activity 3 KRASNOV,S. G., POROSHINA,I. M....G. A. Geological setting of high-temperature hydrothermal activity and massive sulphide formation on fast-...ecology of the Broken Spur hydrothermal vent field: 29~ on the Mid-Atlantic Ridge 33 KRASNOV, S. G., CHERKASHEV |  | | 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) | | Accepted: 6 May 2019 # The Author(s) 2019 Abstract Hydrothermal fluids on the modern seafloor are important... in part reflecting strong buffering of the hydrothermal fluids by their host rocks. Geochemical reaction-path...modeling shows that in most cases the investigated hydrothermal fluids are undersaturated with gold and silver...Precipitation of gold during conductive cooling of mid-ocean ridge black smoker (MOR) fluids occurs at low temperatures...ultramafic-dominated (UM) systems, the strongly reduced hydrothermal fluids promote the deposition of gold at higher |  | | Book | | 01636083 0 geny G. Gurvich Sediments of the World Ocean Fundamental Theory of Deep-Sea Sedimentation 4V...Metalliferous Sediments of the World Ocean Fundamental Theory of Deep-Sea Hydrothermal Sedimentation Digitized...Metalliferous Sediments of the World Ocean Fundamental Theory of Deep-Sea Hydrothermal Sedimentation With 174 Figures...from the Juan de Fuca Ridge.61 1.4. Metalliferous sediments from the Indian ocean.72 1.5. Sediments in...in the areas of hydrothermal activity in the Southwest Pacific. 81 1.6. Metalliferous sediments in the |  | 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) | | Sulfides from the Semenov-2 Hydrothermal Field, 13°31.13'N, Mid-Atlantic Ridge: A Case of Magmatic Contribution...The basalt-hosted Semenov-2 hydrothermal field on the Mid-Atlantic Ridge is host to a rather unique Cu-Zn–...The formation of covellite-A was favored by hydrothermal fluid/seawater mixing or direct oxidation of...apparently lower for covellite-B. Although the Semenov-2 field is basalt hosted, several geochemical features of...sulfides studied are similar to those of the Mid-Atlantic Ridge ultramafic-hosted Cu-Zn–rich massive sulfides |  | | Book | | 2. Oceanography I. Title 553.09162 - dc. 21 3. Ocean bottom ISA/04/01 All rights reserved. No part...World’s Ocean 162 V. M. Yubko Chapter 4 Hydrothermal Sulphide Mineralisation of the Atlantic – Results...Development of Seafloor Massive Sulphides on deep-sea hydrothermal Vent Ecosystems 273 S. Kim Juniper Chapter...Development of an Environmental Baseline in Large Open-Ocean Systems off Southern Namibia by De Beers Marine...the seafloor in the abyssal plains of the world’s ocean, this requirement has worked and seven entities |  | Petersen, S., Herzig, P. M., Hannington, M. D., Jonasson, I. R., Arribas, A. (2002) Submarine Gold Mineralization Near Lihir Island, New Ireland Fore-Arc, Papua New Guinea. Economic Geology, 97 (8) 1795-1813 doi:10.2113/gsecongeo.97.8.1795 | Journal (article/letter/editorial) | | feldspar indicates deposition from near neutral pH hydrothermal fluids. However, the auriferous polymetallic...magmatic volatiles in the earliest stages of the hydrothermal system. Framboidal pyrite within and at the...environments. This paper documents the main features of hydrothermal mineralization at Conical seamount and discusses...of Lihir island. Note the cluster of shallow and mid-depth earthquakes between Lihir island and New Ireland...coupled with relatively low abundances of high field strength elements and moderate, light rare earth |  | | Journal (article/letter/editorial) | | Tumurtijn-ovoo mineralization formed by a submarine hydrothermal process. This interpretation is consistent with...deposit within the scope of other submarine hydrothermal ore deposits is outlined by discussing (1) the...metasomatic reaction between certain silica-rich hydrothermal solutions and carbonate country rock? (2) Were...the process of silica metasomatism or later by hydrothermal solutions from a separate source? 2. Geological... pyrite, arsenopyrite) are omitted. Secondary hematite in magnetite is scored to the host. Photographs |
|
