121 datasets found

From 1983 until 1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other...

From 1983 until 1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other...

The nodule material was digested in 7N HNO3-H2O2, in the presence of 234Th and 232U tracers and dried.From 1983 until 1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals...

Based on comparative studies on the utility of ICP, atomic absorption, and other techniques for the elemental analysis of geological samples the authors decided to pursue a...

Ferromanganese nodules at DOMES sites A, B, and C collected by the R/V Oceanographer. Nodules selected for bulk analysis were taken from the dominant size class of each box core...

Ferromanganese nodules at DOMES sites A, B, and C collected by the R/V Oceanographer. Nodules selected for bulk analysis were taken from the dominant size class of each box core...

The samples used for this study are a subset from almost 200 surface samples from the western Nazca plate analyzed during the IDOE Nazca Plate Project. The subset was selected...

Manganese nodules and crusts from the Pacific Ocean were analyzed at Scripps Institution of Oceanography using X-ray emission spectrometry (XES). Samples were ground to < 74...

Manganese nodules from the Pacific Ocean were analyzed at Scripps Institution of Oceanography using X-ray fluorescence. Samples were ground to < 74 microns, pressed into...

Manganese nodules and crusts from the Pacific and the Indian oceans were analyzed at Scripps Institution of Oceanography using atomic absorption spectrophotometry (AAS). Samples...

9 manganese nodules from sites in the Central Pacific Ocean were analyzed at Scripps Institution of Oceanography using X-ray fluorescence analysis. From 1983 until 1989...

14 manganese nodules and crusts from sites in the Pacific Ocean were analyzed at Scripps Institution of Oceanography using Atomic absorption spectrophotometry (AAS) From 1983...

142 manganese nodules and crusts from sites in the Pacific Ocean were analyzed at Scripps Institution of Oceanography using X-ray emission spectrometry (XES). From 1983 until...

59 samples of metalliferous sediments taken from 17 box cores retrieved from DOMES Sites A, B and C have been analysed. Samples, including pore water salts, were dried at 1100C....

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...

Analyses of the total alpha radioactivity distribution in 31 North Pacific manganese nodules yield an average growth rate of 6.8 ( 2) mm /m.y. Samples from a single box core...

We report here that a manganese nodule from the Central Pacific manganese nodule province has been dated by fossil diatoms found in mud scraped from near the nodule's centre....

Erosion of sediment at two sites within the siliceous-clay province of the northeast equatorial Pacific is investigated by examining radionuclide, radiolarian and percent...

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...

The major and minor element composition of ferromanganese nodules from DOMES Site A has been determined by X-ray fluorescence methods. Three phases appear to control the bulk...