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Observation of manganese nodules recovered by the USCGS Oceanographer in 1968...
Preliminary results of a 14-day cruise of the USC&GS ship Oceanographer to the area near the junction of Juan de Fuca Ridge and the Blanco Fracture Zone are reported. About... -
Observation of manganese crusts recovered by the USNS Bartlett in 1973 over t...
The authors have analysed the chemical composition of "zero-age" samples from the Mid-Atlantic Ridge and compared them with similar results obtained for the East Pacific Ridge... -
Annotated record of the detailed examination of Mn deposits from the 1978 R/V...
This report presents megascopic descriptions of deep-sea sediment cores obtained by personnel of the Hawaii Institute of Geophysics on cruises of the R/V Kana Keoki in the... -
Observation of ferromanganese crusts on lava deposits recovered near the Gala...
The unusual petrological diversity of abyssal lavas erupted along some segments of the Galapagos spreading center is a direct consequence of the propagation (elongation) of... -
Annotated record of the detailed examination of ferromanganese crusts from th...
Volcanic rocks, dredged from depths greater than 1000 m on the Galapagos spreading center, show extreme chemical diversity, including rhyodacites, andesite, ferro-basalts, and... -
Annotated record of the detailed examination of Mn deposits observed Mid-Atla...
Diorites, associated with basalts, basalt breccias, and serpentinized peridotites, occur in situ on the faulted scarps of two seamounts from the western High Fractured Plateau... -
Annotated record of the manganese nodules recovered from the Blake Plateau by...
Analysis of manganese nodules recovered from the Blake Plateau by Deepsea Ventures Inc. From 1983 until 1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database... -
Annotated record of the detailed examination of Mn deposits off Newfoundland,...
Measurements of Pb-210 activities, in conjunction with micropaleontological, geotechnical and sedimentological observations, on sediment cores have been used to characterize two... -
Annotated record of the detailed examination of Mn deposits from the Northwes...
The southernmost part of the Sohm Abyssal Plain in the Northwest Atlantic Basin is geographically distal with respect to the major source of Quaternary terrigenous material... -
Annotated record of the detailed examination of Mn deposits from R.R.S. "Disc...
A total of 36 coring stations were worked during the cruise of which twenty-five were successful. Both piston and free-fall gravity coring techniques were employed and the cores... -
Chemical composition of manganese nodules from the Pacific and Atlantic Ocean...
Manganese nodules from the Atlantic and Pacific Oceans were analyzed at Scripps Institution of Oceanography after being ground to < 74 Microns, pressed into pellets, dried at... -
Annotated record of the detailed examination of Mn deposits from R.R.S. "Disc...
The American Deep Sea Drilling Project (JOIDES) has agreed to drill several holes into the deep sea sediments at sites in the NE Atlantic suggested by UK and French scientists.... -
(Pages 203-204) Concentration in Aluminium-26 in layers of a ferromanganese c...
Manganese nodules are generally considered to have accumulated very slowly. Radiometric studies by 230Th, 231Pa, and 234U/238U suggest their growth rates to be a few mm per 10... -
(Table 1, page 765) D/L Ratios of Amino Acids in Bone Nuclei of Manganese Nod...
The extent of racemization of isoleucine and aspartic acid has been measured on cetacean ear bones from the center of 8 manganese nodules in order to estimate the ages of the... -
(Pages 295-296) Chemical composition of external rind and core of a ferromang...
The deposits studied by the author are crusts and coatings of manganese oxide (mixed psilomelane, wad and limonite) on a consolidated marl. They were recovered from the lake... -
(Table 1, Page 402) Chemical and radiochemical data for nodule SO11-278DK fro...
Recent studies on marine ferromanganese nodules have suggested a relationship between their growth rate and their chemical composition. The suggestion is based on the hypothesis... -
Selection of R/V Marion Dufresne ferromanganese samples stored in the MNHN co...
Ferromanganese deposit samples (nodule and crust) taken from cores and dredges retrieved during the past R/V Marion Dufresne cruise from 1973 until 1992 are stored in the... -
On-board determination of the main chemical elements concentration in mangane...
The area selected for the investigations of the VA-13/2 expedition of the Valdivia corresponds to area 2 of the previous VA-08 expedition performed in 1974. Its center... -
Detailed description of manganese nodules and micronodules from the R/V Valdi...
An area 20 x 20 nautical miles, within the abyssal hill region of the northern Central Pacific, has been sampled intensively by R/V Valdivia . The sediments represent four... -
Main chemical elements concentration in manganese nodules retrieved in the no...
Manganese nodule deposits exhibit variabity in distribution, deposit density, nodule morphology, and chemistry on scales of meters to thousands of kilometers. The Challenger...
