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Description and chemical analysis of manganese nodules from the Pacific Ocean
Analyses of small samples extracted from different parts of a single manganese nodule have been reported by several investigators, clearly documenting the belief that a nodule... -
Chemical composition of manganese nodules from the Pacific Ocean
Manganese nodules from six Pacific Ocean sites contain two chief oxide components which can be distinguished by both optical and X-ray diffraction methods. Optically coordinated... -
Annotated record of Mn deposits from DOMES sites and chemical analysis of a M...
It is the purpose of this chapter to present information available at the time of publication on the internal features of manganese nodules, to offer genetic interpretations of... -
Description, main morphological features and bulk chemical analysis of Mn dep...
Study of the occurrence and physical and chemical character of manganese nodules collected in box cores in DOMES Sites A, B, and C indicates that virtually all nodules lie at... -
Annotated record of the detailed examination of Pacific Ocean Mn deposits and...
The report is divided into three sections: morphology, mineralogy and elemental composition. The nodule morphology section defines what is considered a nodule for the study, and... -
Major elements geochemistry and detailed examination of manganese nodules fro...
In 1975 Washington State University was contracted by the U. S. Geological Survey to conduct a study of manganese nodules collected during cruises of the DOMES project of NOAA.... -
Floor density and geochemistry of manganese nodules recovered for the DOMES S...
Methods of estimating manganese nodule grade and concentration were investigated using data from a well-explored east-central Pacific manganese nodule deposit. Bulk chemical... -
Analysis of ferromanganese nodules, DOMES Site A, Equatorial North Pacific
This report presents the results of chemical analyses of pelagic sediment samples and associated ferromanganese nodules collected at DOMES Site A, located in the equatorial... -
Manganese nodule collection at Washington State University
This report describes the results of some two years of effort devoted to archiving the Marine Manganese Nodule Collection in the Geology Department at Washington State... -
Analysis of Manganese deposits from the Atlantic and Indian oceans
Accumulation rates of 1-2 mm/million years are reported for manganese crusts on deep-sea rocks. These rates are the same as most reported accretion rates for manganese nodules... -
Analysis of Mn-nodules from the Pacific
This report offers a description and further geochemical analysis of ocean manganese manganese deposits material available at the time in the New Zealand Oceanographic Institute... -
Geochemistry on Mn-nodules from Leg81
ree types of concretions were recovered during Leg 81 from Holes 552A, 553A, and 554A, located on the west margin of the Rockall Plateau. In the sedimentary section, these... -
Analysis of Mn-depositis from the Briançon area, France
This text offers a general introduction to the geological history of the North-Tethys Platform from the Malm to the Lower Eocene periods. It is followed by three parts: a... -
Analysis of ferromanganese deposits from the Northwestern Pacific seamounts
Fine-scale dating is crucial to understanding the growth and environments of formation of marine manganese deposits. The paleomagnetic method of dating of manganese nodules and... -
Analysis of Fe-Mn-deposits from the ocean
A compilation of published and unpublished chemical analyses of samples of ferromanganese deposits from the ocean floor reveals that only in relatively few areas of the world... -
Analysis of manganese nodules from the Atlantic
Concentrations of the rare earths have been determined in ten modern manganese nodules from the Atlantic, Pacific, and Indian Oceans, the Baltic Sea, and Lake Charlotte in Nova... -
Analysis of Mn-deposits from the Pacific
Crusts composed of nontronite and ferromanganese oxides were recovered from Explorer Ridge, a spreading ridge segment in the northeastern Pacific Ocean located off the west... -
Description of the Manganese Collection at HIG
The properties of ferromanganese concretions reflect in many ways the marine environment in which they were formed, and points to a variety of probable genetic mechanisms in... -
Analysis of Manganese deposits from the South China Sea
In the northern South China Sea, the accumulation of enormous quantities of terrigenous sediment during Cenozoic rendered well-developed polymetallic nodules very rare. In this... -
Analysis of Mn-nodules from the Alps
The nodules from the Briançon area in the French Alps show two types of cauliflower shaped botryoidal growth. One could be diagenetic and the other purely chemical. They could...
