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Annotated record and Pb, Th, U and Ra isotope concentrations for two cores of...
A model that predicts the flux of 222Rn out of deep-sea sediment is presented. The radon is ultimately generated by 230Th which is stripped from the overlying water into the... -
Major elements geochemistry of manganese nodules and ferromanganese crusts fr...
Experimental substitutions of transition and alkaline earth cations into synthetic 10angstrom(Na-)-manganate show that cation uptake and the stability of the cation-substituted... -
Chemical composition of manganese nodule samples from the North Pacific Ocean
Nine nodules collected from throughout the deep North Pacific were analyzed for their mineralogy and major-element composition before and after leaching with Chester-Hughes... -
Osmium concentration and isotopic composition of North Pacific deep-sea sedim...
Pelagic clay and Mn nodules from DOMES sites in the North Pacific and a varved glacial lake deposit from Connecticut were analysed for Os concentration and isotopic composition... -
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... -
Investigation of manganese deposits from the Pacific and Atlantic oceans
Submersible exploration on the eastern Pacific Ridge near 21 ° N has revealed an active hydrothermal system. It is manifested by the emission in the marine environment of hot... -
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... -
Geochemistry on Manganese nodules from the Indian Ocean
Manganese nodules from a wide range of marine environments have been analysed for a series of elements by optical spectrography, atomic absorption spectrophotometry and mass... -
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... -
Observation and geochemistry of Mn-deposits from the Atlantic coast of the Un...
The purpose of the data file presented below is twofold: the first purpose is to make available in printed form the basic data relating to the samples collected as part of the...