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Rare earth element composition of manganese nodules and micronodules from the...
The shale-normalized REE patterns of manganese nodules from the northwest Atlantic show enrichment in Sm and Eu relative to the heavier and lighter REE, excluding Ce, and are... -
Growth of a manganese nodule from Peru Basin: A radiochemical anatomy
Attempts have been made to study the entire growth history of a manganese nodule from the northern part of Peru Basin in the Pacific using radiochemical profiles of 230Th232Th,... -
Chemical composition of the 2 opposites sides of a deep-sea manganese-nodule ...
We discuss the differences in chemical composition between the two opposite sides of a deep-sea manganese nodule. The upper side, facing sea water, contains a hydrogeneous... -
Geochemistry on sediment and nodules from the Madeira Abyssal Plain
The accretion rate of manganese nodules and the sedimentation rate of the underlying sediment has been studied with 10Be and 14C on a nodule covered hill in the Madeira Abyssal... -
Radionuclides in Manganese nodules
Manganese nodules are considered to have accumulated in general very slowly: surface layers of nodules contain a large excess of 230Th, more than would be produced by uranium... -
Description and composition of Manganese deposits from the Mid-Atlantic Ridge
Iron-rich sediments similar to those forming on other active mid-oceanic ridges have been found in the Median Valley of the Mid-Atlantic Ridge near 45 °N. The sediments are... -
Geochemistry on manganese nodules from the Southern Ocean
Manganese nodules from the Scotia Sea and Pacific Ocean sectors of the Southern Ocean display regional differences in chemical and mineralogical composition. Mn/Fe and... -
Chemical analysis of manganese nodules from th Atlantic
Atlantic manganese nodules and encrustations are most abundant in areas of slow sedimentation beneath the carbonate compensation depth or where currents inhibit sediment... -
Analysis of manganese crusts from Galapagos
Manganese oxide crusts similar to those reported from the Mid-Atlantic Ridge rift valley by Scott et al., 1974 (https://doi.pangaea.de/10.1594/PANGAEA.848726) were dredged at... -
Geochemistry on sediments from Baja California
Pelagic sediment recovered at DOMES Site A in the equatorial North Pacific (151°W, 9° 15'N) consists of a surface homogeneous layer, approximately 10 cm thick, overlying a... -
Radionuclide analysis on nodules from MANOP Site
Relationships among Th and Ra isotopes in nodule, sediment and water phases at MANOP Site S establish the most likely source for Th in the nodules, the frequency of nodule... -
Geochemistry on pryite concretions from the Romanche Trench
Pyrite concretions a few centimeters in diameter were recovered from within the east-west valley of the Romanche fracture zone (equatorial Atlantic). Unconsolidated sediments... -
Geochemistry on manganese nodules from the Pacific
Manganese nodules have been analysed at the Scripps Institution of Oceanography after having been ground to to a diameter less than 74 microns. Some analysises were performed on... -
Analysis of manganese nodules from the East Pacific
The distribution of several metals in East Pacific Rise sediments, when normalized to Al2O3, exhibit stronger maxima near the rise crest than when simply plotted on a... -
Analysis of sediments at Domes Site A, Pacific Ocean
The chemical and mineralogical composition of burrowed sediment, recovered in 66 box cores at latitude 9°25'N and longitude 151°15'W in the equatorial Pacific, demonstrates the... -
Manganese nodule and surface sediment compositions: DOMES sites A, B, and C
Manganese nodules and associated sediment from the equatorial North Pacific have been examined to ascertain relations between nodule abundance, texture, and composition, and... -
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...
