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Radiochemical data for layers inside manganese crusts retrieved during the RO...
Radiochemical analyses have been performed on micro-samples extracted from various surface and inside layers of manganese crusts covering basalt or volcanic breccia rocks (see,... -
Accumation rates of manganese in manganese nodules using total alpha activity
The manganese content of 4 manganese nodules was determined by atomic absorption. The decrease of total alpha activity was used to evaluate Mn accumulation. Because CaCO3 is a... -
Accumation rates of manganese in manganese nodules using differential 230Th-2...
The manganese content of 7 manganese nodules was determined by neutron activation. The decrease of unsupported 231Pa and 230Th in the outer few tenths of millimeters was used to... -
Accumation rates of manganese in a pelagic sediment core using 231Pa activity
For a pelagic sediment core taken in the Atlantic Ocean, The decrease of unsupported 231Pa was used for the determination of the accretion rate. Because CaCO3 is a Mn-free... -
Accumation rates of manganese in pelagic sediments using Ericson paleontologi...
For 4 pelagic sediment cores taken in the Atlantic Ocean, Ericson's paleontologic boundaries X-Y (75 000 yr) and Y-Z (11 000 yr) were used. The age of the upper boundary was... -
Accumation rates of manganese in pelagic sediments using 130Th activity
For 7 pelagic sediment cores, the decrease in unsupported 130Th activity with depth in the core was used to establish the mean accumulation rate over the last 300 000 years.... -
Accumation rates of manganese in pelagic sediments using Brunnes-Matuyama mag...
For 27 pelagic sediment cores, the Brunnes-Matuyama magnetic reversal boundary (700 000 yr) was used to establish the mean sedimentation rate between this level and the core... -
Chemical composition of ferromanganese nodules from the Pacific Ocean obtaine...
Mn nodules from the Pacific ocean were retrieved during expeditions of the R/V Vytiaz and analysed for their chemical composition after separation of soluble (authigenic) part... -
Chemical composition of ferromanganese nodules from the Pacific Ocean obtaine...
Mn nodules from the Pacific ocean were retrieved during expeditions of the R/V Vytiaz and analysed for their chemical composition after separation of soluble (authigenic) part... -
Mineral composition of ferromanganese nodules from the Pacific Ocean
The manganese minerals constitutive of ferromanganese nodules retrieved during cruises of the R/V Vityaz wer determined by X-ray diffraction. The analyses were made of well... -
Kennecott Standard GRLD-126 manganese nodule replicate Atomic absorption spec...
The Kennecott nodule standard GRLD-126 was run with several batches of the nodule structure zone samples in order to check the precision of the atomic absorption analyses. Using... -
Chemical composition of selected manganese nodule and ferromanganese crust st...
If nodules were chemically homogeneous objects, their bulk compositions would paint a complete picture. But they are not, as can be assumed simply from visual recognition of... -
Bulk chemical composition of Southwestern Pacific Ocean manganese nodules (Ex...
The bulk compositions of Samoan Basin nodules were determined for this study, and these data have been compiled with those of Glasby, et al. (1975) to form Appendix L. Silicon,... -
Morphology of Mn nodule samples from the Southwestern Pacific Ocean (Expediti...
Mn nodule shapes which can be described as spheroidal, ellipsoidal or polynucleate predominate in the Southwestern Pacific Ocean. The morphology, size, weight and number of... -
Chemical composition of Southwestern Pacific Ocean surface sediments (Expedit...
Silicon, aluminum, calcium, titanium and iron percentages were obtained by X-ray fluorescence analysis using an EDAX International EXAM system. Sediment samples collected during... -
Minor and rare-earth elements concentration in manganese nodules and micronod...
Digitized Table 2 (REE) of the unpublished report.--From 1983 until 1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical... -
Various chemical elements concentration in manganese nodules, crusts and micr...
Digitized Table 2 of the unpublished report.--From 1983 until 1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports... -
Main metal elements concentration in manganese nodules, crusts and micronodul...
Digitized Table 1 of the unpublished report.--From 1983 until 1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports... -
Rare-earth and major elements concentration in sediments of the Northwest Atl...
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... -
Rare-earth and major elements concentration in manganese micronodules nodules...
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...
