247 datasets found

Manganese nodules retrieved by early cruises of the R/V Hakuho Maru in the Pacific Ocean and the R/V Umikata Maru in the Indian Ocean have been chemically analysed. Samples were...

9 manganese crusts retrieved from the Manihiki Plateau area by R/V Tui have been analysed by instrumental neutron activation analysis in order to characterize their geochemical...

During the evaluation of marine mineral resources of the Samoan region sponsored by CCOP/SOPAC program (ESCAP, United Nations) the R/V Machias successfully retrieved a number of...

Knowledge of the oxidation states and of the chemical speciation of metals in ferromanganese deposits is of interest to aid in understanding the association of metals with the...

During cruise L582SP of R/V Lee from USGS, dredges performed on the Tonga ridge have retrieved manganese crusts deposited on sandstone formations. These samples have been...

67 samples of manganese nodules were obtained during the GH79-1 Cruise of R/V Hakurei Maru in the northern part of the Central Pacific Basin. All nodules were immersed in...

Surface sediments were collected during the GH79-1 cruise, Geological Survey of Japan, from the area of 10°-13°N and 165°-180°W. Material for this study (34 samples) was...

Sediment samples from three box cores and one piston core, collected on cruise GH79-1 of the research vessel Hakurei-Maru, were analyzed for major oxides and minor elements. All...

Four manganese nodules collected south and southwest of Rarotonga one of the Cook Islands were subjected to microprobe analysis in order to determine variations in chemical...

Manganiferous materials were collected at 49 stations in the Central Pacific Basin, the Mid-Pacific Mountains, the Manihiki Plateau, and the Penrhyn Basin during cruise GH80-1....

The moisture content and the minor element contents were determined for 115 sediment samples collected from the G H 80-1 survey traverses of the Central Pacific Wake-Tahiti...

The 127 sediment samples of this study (Table XIV-1) were selected on the ship from 17 piston cores and 27 box cores, which were taken by shipboard members from 44 locations...

Ferromanganese crusts were selected from two cruises performed by R/V Moana Wave in early 1986 and 1987 within territorial waters of the Cook Islands, Kiribati, Tuvalu and...

Manganese nodules and crusts were taken from free-fall grabs at various stations of the Manganese Nodule Program BOMDROP cruise MN75-03. They were analysed using atomic...

Chemical assessment of trace metals concentrations in a selected set of manganese crusts and coatings from the Pacific Ocean. Composition has been determined by atomic...

Manganese nodules from VA13/2 cruise (R/V Valdivia) were selected for a variety of morphologies and size. They were regrouped by size class and chemically analyzed in bulk. Mn,...

Sediment cores of the Bauer Deep were obtained by standard piston-coring techniques on cruises of the R/V Atlantis II (no. 54) and R/V Chain (no. 100) of the Woods Hole...

Manganese nodules and crusts from stations of the SO06 expedition (R/V Sonne) in the Aitutaki Passage have been selected for chemical analysis of Ti, Mo and Pb using atomic...

In order to evaluate the possible influence of hydrothermal activity on Fe-Mn coatings found on the surfaces of basaltic rocks in the median part of Transform Fault "A", a few...

Sampled hydrothermal deposits from Transform fault 'A' on the Mid-Atlantic Ridge have been classified into two main categories according to the relative proportion of the black...