653 datasets found

An extensive field of iron-rich, nickel- and copper-poor manganese nodules covers the deep sea-floor of the northeastern quadrant of the Southwestern Pacific Basin, and the...

The geological characteristics and Fe-Mn deposits from the North wall of the Romanche trench (Atlantic ocean) were studied in order to investigate possible relationships of...

The area selected for the investigations of the VA-13/2 expedition of the Valdivia corresponds to area 2 of the previous VA-08 expedition performed in 1974. Its center...

Manganese nodule deposits exhibit variabity in distribution, deposit density, nodule morphology, and chemistry on scales of meters to thousands of kilometers. The Challenger...

Geochemical analysis of manganese nodules collected from Indian ocean aboard R/V Marion Dufresne with Atomic Absorption Spectrometry. Digitized Table 1.From 1983 until 1989...

Geochemical analysis of manganese nodules collected from Indian ocean aboard R/V Marion Dufresne with wet chemistry. Digitized Table 2.From 1983 until 1989 NOAA-NCEI compiled...

72 surface sediments associated with manganese nodules from 31 sites in the Central Pacific Ocean were obtained during CCOP/SOPAC cruises in 1980, and from the core collections...

61 manganese nodules from 31 sites in the Central Pacific Ocean were obtained during CCOP/SOPAC cruises in 1980, and from the core collections at the University of Hawaii,...

Iron-manganese crusts were chosen from existing collections in order to cover as wide an area and depth range as possible. Sampling was concentrated in the Central Pacific...

Bulk chemical analyses of manganese nodules retrieved during the R.V. Tangaroa cruise of May-June 1976. The nodules occur on silty clay. Approximately two-thirds are either...

The ferromanganese crust samples studied have been taken from Central Pacific seamount areas during the research cruise Midpac 81. Two ferromanganese crust generations with...

The ferromanganese crust samples studied have been taken from Central Pacific seamount areas during the research cruise Midpac 81. Two ferromanganese crust generations with...

A suite of eight glassy rims and six crystalline interiors from pillowed basalts was collected from within the Mid-Atlantic Ridge rift valley between 25°N and 30°N during...

A suite of three palagonites from pillowed basalts collected from within the Mid-Atlantic Ridge rift valley between 25°N and 30°N wer analysed along with another suite of two...

Ferromanganese microconcretions (FMC) were hand picked from four sieved size fractions (100, 200, 325 and 400 mesh) of sediment samples from four depths in a one meter gravity...

Solid layered hydrothermal deposits have been retrieved using submersible ALVIN robotic arm over the Mid-Atlantic Ridge TAG field. These samples were analysed using Atomic...

A suite of ferromanganese oxide crust specimens was collected by R.R.S. Shackleton in 1975 as part of the continuing study at Imperial College of North West Indian Ocean nodules...

Nereus Deep is situated within the NW-SE trending median valley of the Red Sea and is divided along its length by a saddle into two parallel basins. Each basin contains a number...

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....

In 1984, the U.S. Geological Survey (USGS) conducted a reconnaissance cruise L9-84-CP aboard the R/V S.P. LEE along the northern Ratak Ridge, Marshall Islands and retrieved...