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Exploration For Seafloor Polymetallic Sulfide Deposits Using Particle Concentration Gradients In Hydrothermal Plumes
By Timothy F. McConachy
Hydrothermal fluids emanating from the seafloor rise as buoyant plumes, entraining ambient bottom sea water on the way up, until they reach density equilibrium and spread laterally in a direction that
Jan 1, 1986
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Low Cost Drilling for Deep Sea Minerals Exploration
By Art Wright, Steinar L. Ellefmo, Kurt Aasly, Mike Williamson, Fredrik Søreide, Martin Ludvigsen, Michael Zylstra
Exploring for minerals on the seabed is challenging and expensive – and the ability to collect representative sub surface samples is essential. The research project MarMine led by NTNU has together wi
Jan 1, 2017
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National Needs - Hard Mineral Dependencies
By Raymond Kaufman
While there is no immediate worldwide shortage of hard minerals, the consumption of natural resources is constantly increasing, and there are ominous predictions of shortages to come. Means of meeti
Jan 1, 1975
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Geochemical Variations of SMS Deposits from Mid-Ocean Ridge and Arc-Back Arc Settings
By Nicholas Dyriw, Georgy Cherkashov, Tamara Stepanova, John Parianos, Anna Firstova
"Seafloor massive sulfide (SMS) deposits are a new frontier in global metal resources. Hydrothermal chimney’s (black smokers) precipitate Cu, Zn, Ag and Au rich from hot fluids (>250°C) during interac
Jan 1, 2017
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Cash Flow Models of Different Deep Sea Mining Deposits - Deep Sea Mining Projects
By Henk van Muijen
From an interesting and intriguing scientific research topic, deep sea mining has altered into an interesting mining prospect over the last years. Ten years ago most of the focus was on geological inv
Jan 1, 2010
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The Kermadec Arc: A Hot Prospect For Gold-Rich Massive Sulfide Deposits?
By Cornel E. J. de Ronde
Volcanic arcs, including both island arc and intra-oceanic arc systems, combined extend for ~22,000 km around the Earth, with the majority (~20,000 km) occurring in the Pacific basin. These arcs are
Jan 1, 2002
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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
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Designing The UFOceanic AUV For Cost-Effective Mineral Prospecting
By David M. Holmes-Smith
Many attempts have been made to design and build an AUV that is small, meets the sensing objectives and is cost effective. Many inventors have already designed smaller vehicles but the problem observ
Jan 1, 2001
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Mineralogy of Polymetallic Nodules in the Central Mexican Pacific (b0fead6b-fb77-4585-9d75-45915ccf5818)
By Mayumy Amparo Cabrera-Ramírez
Polymetallic nodules are a widespread resource in the Pacific Ocean, particularly in the areas of Clarion-Clipperton (Cronan, 2000). The most abundant mineral phases are forme d by iron and manganese
Sep 14, 2011
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Exploring The Third Dimension Of An Active Seafloor Hydrothermal System Hosted By Felsic Volcanic Rocks: ODP Leg 193 At PACMANUS, Papua New Guinea
By Raymond A. Binns
In this first sub-seafloor examination of an active hydrothermal system hosted by felsic volcanic rocks at a convergent plate margin, we drilled 13 holes altogether, achieving deep cored penetrations
Jan 1, 2002
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Plumes of Deep-Sea Mining: What Do We Know?
By Georgy Cherkashov, Livia Ermakova
Active development of the exploration and further exploitation of deep-sea minerals requires special emphasis on the protection of the marine environment. The complexity of this subject lies in the fa
Jan 1, 2018
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A New Concept Of Easy Pre-Site Survey Method Of Deep Sea Hydrothermal Deposits
By Shinichi Takagawa
The deep sea hydrothermal deposits are one of the most prospecting resources, and various works to develop these mines are now underway. There are also various methods for the pre-site survey of th
Jan 1, 2011
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Programmatic Activities In The U.S. Exclusive Economic Zone
By Robert G. Paul
President Reagan's Exclusive Economic Zone (EEZ) Proclamation of March 10, 1983, extended United States ocean jurisdiction 200 nautical miles offshore our coastal states and territories. The acco
Jan 1, 1985
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Seafloor Deployed Core Drill Successful In Deepsea Test
By M. E. Williamson
In September 2005 Williamson & Associates, Inc. delivered the BMS2 remotely operated seafloor coring system to the Japan Oil, Gas & Minerals National Corporation (JOGMEC). During acceptance trials ab
Jan 1, 2005
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Effects of Sedimentation from Deep-Sea Mining: A Benthic Disturbance Experiment off New Zealand.
By Malcolm Clark, Robin K. H. Falconer
There are a number of likely impacts from mining operations, but a key issue is uncertainty about the environmental effects of sediment plumes created by disturbance to the seafloor and discharge of p
Jan 1, 2018
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Geochemistry Of Massive Sulfide-Associated Hydrothermal Exhalative Sediments, Bathurst, New Brunswick
By Jan M. Peter
Many of the Pb-Zn massive sulfide deposits of the Bathurst area in northern New Brunswick, Canada, are intimately associated with laterally continuous iron formation (IF) (Figure 1). This IF is a foss
Jan 1, 1993
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Tellurium-Bearing Minerals in Sulfide Chimneys from Ultramafic-Hosted Semyenov-2 Hydrothermal Field, Mid-Atlantic Ridge
By Georgy Cherkashov, Tamara Stepanova, Anna Firstova
INTRODUCTION High tellurium contents in the ancient volcanogenic massive sulfides (VMS) and modern seafloor massive sulfides (SMS) have been reported by V.Maslennikov (Maslennikov et al., 2013). Howev
Jan 1, 2018
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IHC Merwede And DEME Join Forces To Develop Deep-Sea Mining Activities
By Kris van Nijen
IHC Merwede, a Dutch supplier of ships and equipment for dredging and mining activities, and DEME, a Belgian dredging and environmental services group, will enter into a joint venture for deep-sea min
Jan 1, 2011
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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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First Australian Offshore Mineral Locations Map
By Yanis Miezitis, Gerald Mueller, Timothy F. McConachy, Ronald G. Sait, Keith R. Porritt, William J. McKay
In November 2004, Australia lodged with the United Nations Commission on the Limits of the Continental Shelf possible new maritime boundaries in relation to Australia’s continental shelf extending b
Aug 24, 2006