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Brothers Volcano, Southern Kermadec Arc, New Zealand: Contrasting Vent Sites And Evidence For A Magmatic Fluid Component
By Cornel E. J. de Ronde
Brothers volcano (34°51.7?S, 179°03.6?E) is a large caldera volcano that forms part of the active Kermadec arc south of 32° S, NE of New Zealand. It is an elongate edifice striking NW-SE that is ~11-
Jan 1, 2004
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Massive Sulfides from Ancient and Modern Margins of the Asian Paleo-ocean and Pacific: Textures, Mineralogy and Fluid Inclusion Data
By G. A. Tret’yakov, V. A. Simonov, I. Yu. Melekestseva, V. V. Zaykov, N. N. Ankusheva
The Kyzyl-Tashtyg massive sulfide polymetallic deposit is situated 120 km north-east of Kyzyl (the capital of Tuva Republic, Russia). It is located in the Ulug-O volcanic zone which is interpreted a
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Methane Hydrate Exploration Around the Eastern Nankai Trough
By Masaru Nakamizu, Tetsuya Fujii, Tatsuo Saeki, Ken-ichi Yokoi
Methane hydrate, a solid compound formed from methane and water, occurs naturally in permafrost regions on-land and in deep continental slopes offshore and has been examined as future energy resource
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Can Radium Isotopes Give Insight Into Volcanic And Hydrothermal Processes And The Sustainability Of Metal-Rich Sulfide Mineralization?
By Robert G. Ditchburn
Dating seafloor mineralization at hydrothermal centres of submarine arc volcanoes is important for understanding deep-seated volcanic events that can produce deposits rich in base and precious metals.
Jan 1, 2011
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Contrasting Styles Of Marine Diamond Mineralisation Requiring Different Mining Methodologies - A Case Study From Concession 2B South African West Coast
By P. C. Hollick
Two marine diamond deposits on concession 2b off Namaqualand along the South African Coast, have been systematically mined over the past year by the mv Moonstar. The two deposits, Smith?s Ulcer and We
Jan 1, 1998
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The Coming Copper Crisis: An Important Role For Deep-Sea Mineral Resources In Fulfilling Japan?s Demand
By Tetsuo Yamazaki
Manganese nodules, seafloor massive sulfides, and cobalt-rich manganese crusts in deep-sea areas have been considered as future metal sources (Mero, 1965; Halbach, 1982; Lenoble, 2000). Manganese nod
Jan 1, 2005
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Genetic Relationship Between Ultramafic/Mafic-Hosted Massive Sulfides And Their Host Rocks At The Logatchev Hydrothermal Field At 14°45?N (MAR) Using PGE Geochemistry And Os Isotopes
By T. Kuhn
The Logatchev hydrothermal field is situated on the east inner flank of the rift valley of the MAR at 14°45?N and is hosted by serpentinized peridotites and minor gabbronorites while basalts are subor
Jan 1, 2004
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The Activities of Brazil in Relation to Deep Seabed Mineral Resources Development
By Kaiser Gonçalves de Souza
Activities of Brazil in relation to deep seabed mineral resources development are carried out in the framework of two main national programmes. They are: (1) the Program for the Assessment of Mineral
Jan 1, 2010
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Hydrothermal Activity And The Formation Of Massive Sulfide Mineralization At Clark Volcano, Kermadec Arc, New Zealand
Clark volcano is a large volcanic center on the active arc front of the intraoceanic Kermadec arc. It is one of the two southern-most Kermadec arc volcanoes (the other being Whakatane volcano) that s
Jan 1, 2011
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Chimney Massive Sulfides from the Vienna Woods Deposit (Bismarck Sea, PNG): Mineral Zonation and Geochemical Gradients
By Janine Lahr, Peter E. Halbach
The Manus Spreading Ridge is located within the EEZ of Papua New Guinea and lies in the Manus Basin ENE of the PNG Island and N of the Island New Britain. The divergent backarc spreading system is cau
Sep 24, 2006
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Contrasting Styles of Hydrothermal Activity at Brothers Volcano, Kermadec Arc, New Zealand
The Brothers hydrothermal system is host to two very contrasting vent fields and to date, is the only known example of this kind for any submarine arc volcano in the world. Firstly, there is the NW ca
Jan 1, 2010
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Hydrothermal Hematite/Silica Rocks from the Blanco Fracture Zone, Northeast Pacific
By David A. Clague, James R. Hein, Robert W. Embley, Robert C. Vrijenhoek, Randolph A. Koski
We report preliminary results for a group of unique samples collected with MBARI’s ROV Tiburon on August 12, 2005. The samples were collected from the East Blanco Depression (EBD) diffuse-flow hydrot
Aug 24, 2006
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Inner Shelf And Beach Seashell Resources In Southern Brazil
By Lauro Calliari
Detailed geological studies using side scan sonar, bottom sampling and piston cores along the Rio Grande do Sul inner continental shelf and coastline indicate the occurrence of elongate deposits of ca
Jan 1, 1995
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The 300 Mt Windy Craggy Besshi-Type Massive Sulfide Deposit, Northwestern British Columbia, Canada: An Analog For Modern Seafloor Sulfide Deposits At Sedimented Settings?
By Jan M. Peter
The Early Norian Windy Craggy massive sulfide deposit is within the allochthonous Alexander terrane of the Insular tectonic belt in extreme northwestern British Columbia (Figure 1). Host rocks are the
Jan 1, 1993
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Polymetallic Nodules as a Future Deep Sea Mineral Resource
By U. Schwarz-Schampera, C. Rühlemann, H. -R. Kudrass
Within 2006 BGR will conclude a contract with the UN International Seabed Authority (ISA) for the exploration of polymetallic nodules. The contract covers an area in the Pacific nodule belt between th
Aug 24, 2006
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Marine Mining And Minerals Exploration: The New Role For Academe
By J. Robert Moore
Introductory remarks will be made by the speaker, chiefly on recent and current developments in the industrial, agency and academic sectors that relate to the status of marine mining and mineral explo
Jan 1, 1986
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Geochemical Characteristics Of Deep-Sea Sediments From The NE Equatorial Pacific And Its Paleoceanographic Implications
By Sung-Hyun Park
Core sediment samples collected from the KODOS area of the Clarion-Clipperton Fracture Zone in the NE Equatorial Pacific were analyzed for chemical and mineralogical compositions to investigate the de
Jan 1, 2003
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Economic, Environmental and Technical Considerations for Deep-sea Mining
By Rahul Sharma
Although, mining of minerals such as polymetallic nodules and sulphides from the deep sea floor has been delayed due to the combination of factors such as current availability of Cu, Ni, Co, Mn (and o
Jan 1, 2010
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Latitudinal Changes In Fe-Mn Oxide Crust Chemistry: Detailed NW-SE Transect Of The Equatorial Pacific, Marshall Islands To Samoa
By James R. Hein
A new data set of cobalt-rich ferromanganese (Fe-Mn) crust chemistry has been completed for the first detailed sampling of a latitudinal crossing of the Pacific equatorial zone of high biological prod
Jan 1, 2003
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The Campbell Ferromanganese Nodule Field (SW Pacific Ocean) Formed Beneath The Deep Western Boundary Current: An Important Source Of Paleo-Environmental And Chronostratigraphic Information
An extensive ferromanganese nodule field south of New Zealand (Fig. 1) has existed beneath the flow of the Deep Western Boundary Current (DWBC) and Antarctic Circumpolar Current (ACC) for at least the
Jan 1, 2003