Search Documents
Search Again
Search Again
Refine Search
Refine Search
- Relevance
- Most Recent
- Alphabetically
Sort by
- Relevance
- Most Recent
- Alphabetically
-
Column Flotation Of Cobalt-Rich Ferromanganese Crust
By William C. Hirt
Column flotation is a promising technique for processing as-mined, cobalt-rich, ferromanganese crust to separate the valuable crust component from barren substrate-rock, either aboard ship or within t
Jan 1, 1992
-
Uncommon Au- And Ag-Enriched Sulfidic Mineral Assemblages From A Basaltic Spreading Ridge Environment: Mt. Jourdanne, Southwest Indian Ridge
By Peter Halbach
Hydrothermal activity is well known from many locations on most mid-ocean ridges, however no hydrothermally mineralized area had yet been found at the ultraslow spreading southwest Indian Ridge up to
Jan 1, 2001
-
Seamount-Scale Controls on Ferromanganese Crust Geochemistry: Tropic Seamount, NE Atlantic
By C. R. Pearce, B. Murton, S. Howarth, P. Lusty
"With the expansion of “green” energy technologies, the demand for the critical raw materials required to sustain this growth is increasing. Many E-tech elements, including tellurium (Te) and rare ear
Jan 1, 2017
-
Application Of Ferromanganese Marine Mineral Tailings In Concrete And Ceramics
By J. C. Wiltshire
Both ferromanganese crusts and nodules present potential processors with enormous volumes of tailings of dubious environmental character: most processing scenarios fail to utilize the uneconomic manga
Jan 1, 1991
-
Platinum-Group-Metals, Gold, And Chromium Resource Potential Offshore Of Platinum, Alaska
By James C. Barker
Concern over the availability of domestic critical and strategic mineral supplies has led the Bureau of Mines to evaluate the reserve development potential of alternative sources in Alaska. Near the v
Jan 1, 1986
-
GLORIA Survey Of The Gulf Of Mexico
By Bonnie A. McGregor
The U. S. Geological Survey in cooperation with the Institute of Oceanographic Sciences (IOS), U.K., conducted a sidescan sonar survey of the U. S. Exclusive Economic Zone in the Gulf of Mexico from A
Jan 1, 1986
-
The Escanaba Trough, Southern Gorda Ridge: Sulfide Deposits And Hydrothermal Processes At A Sediment-Covered Spreading Axis Within The U.S. Exclusive Economic Zone
By Randolph A. Koski
Since 1985, numerous constructional sulfide-sulfate deposits in the form of mounds, pinnacles, chimneys, and sheets have been located between 40°45' and 41°05'N latitude in Escanaba Trough,
Jan 1, 1988
-
A Preliminary Look At The OMCO Data Base
By Charles L. Morgan
In a commercial effort to characterize deep seabed manganese deposits in the Clarion-Clipperton region of the northeastern tropical Pacific, Ocean Mineral s Company carried out 16 expeditions to the r
Jan 1, 1991
-
Effective Exploitation Of Some Mineral Deposits Along The Continental Margin Of Kerala, India
By S. Rajendran
Much advance has been made in offshore hydrocarbon exploration and exploitation in India. But the same amount of success could not be achieved in the case of other offshore minerals which are amenable
Jan 1, 1993
-
Physiology, Geology And Sulfide Deposits Of The Southern Explorer Ridge Seafloor Hydrothermal Site Using An Integrated GIS Database And 3D Modeling
By Yannick C. Beaudoin
Southern Explorer Ridge (SER) is an anomalously shallow, intermediate-rate spreading ridge located 200 kilometers off the west coast of Vancouver Island, Canada. It ranges in depth between 2600 m (dee
Jan 1, 2001
-
An Integrated Approach To The Assessment Of Anthropogenic Disturbance At Marine Sand & Gravel Extraction Sites
By D. S. Limpenny
Marine benthic habitats are vulnerable to the influence of a wide range of anthropogenic activities (e.g. sand and gravel extraction, dredged material disposal and trawling). Traditionally, benthic e
Jan 1, 2004
-
The Planning Viewpoint Of A Small Island Nation
By Tap Pryor
A very small nation with large seabed resources requires a strategy. The simplest approach is to duplicate every step taken by the United Nations (UN), in its own leasing programme. In addition, the s
Jan 1, 1994
-
Canada's Shelf Resource Potential
By Peter B. Hale
Canada has a long history of marine-related industry and onshore mining. Even so, commercial interest in marine mining, excluding seawater mineral extraction and offshore extensions of hardrock deposi
Jan 1, 1985
-
Regional Assessments And Geological Studies Of Hard Mineral Resources On U.S. Continental Shelves
By S. Jeffress Williams
The U.S. Geological Survey (USGS), over the past three decades, has carried out a spectrum of geologic surveys and research in marine areas of the Exclusive Economic Zone (EEZ) around the U.S. and its
Jan 1, 1992
-
The Broken Spur And TAG Hydrothermal Fields On The Mid-Atlantic Ridge: Complex Histories Of Mound Development
By R. W. Nesbitt
The TAG and Broken Spur hydrothermal mounds are located on the Mid Atlantic Ridge (MAR) at 260N and 290N (respectively). Both were initially discovered by exploratory work from surface vessels and bo
Jan 1, 1998
-
Resource Management And Environmental Impacts In Sand And Gravel Dredging
By Ian Selby
Resource management is a key factor in the operation of a successful marine aggregates business; it is integral to the development of sustainability, satisfying increasing commercial, quality, and env
Jan 1, 2004
-
Submarine Hydrothermal Mineral Deposits In The Eastern Mediterranean Sea
By David S. Cronan
Submarine hydrothermal mineralization occurs in at least three locations along the Hellenic Volcanic Arc in the Eastern Mediterranean Sea. Weak hydrothermal discharges occur off Kos and Nisseros at th
Jan 1, 1994
-
Plate Tectonic Reorganizations: Possible Controls On Massive Sulfide Deposition
By A. M. Olivarez
The elucidation of the theory of plate tectonics has provided a conceptual framework for understanding the formation and distribution of different types of ore deposits. For example, we now recognize
Jan 1, 1988
-
Hydrothermal Activity along the Central Spreading Ridge of North Fiji Basin: Results from 2012-2013 Explorations
By Jonguk Kim
The North Fiji Basin (NFB) is a mature intraoceanic back arc basin with an age of ~12 Ma. Recent volcanism and spreading activity are focused along the Central Spreading Ridge (CSR), A ridge segment m
Sep 14, 2011
-
Gas Hydrate, Methanogenic Calcite, And 13C-Depleted Bivalve Shells From A Mud Volcano Offshore Los Angeles, California
By James R. Hein
Methane and hydrogen sulfide vent from a cold seep above a shallowly buried methane hydrate in a mud volcano located 24 km offshore of Los Angeles, California in 800 m water. Bivalves, authigenic cal
Jan 1, 2005