Publication Date:
2023-12-14
Description:
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 hydrothermally altered basaltic breccias and four hydrothermal manganese crusts collected from the TAG hydrothermal field at 26°N on the Mid-Atlantic Ridge. These specimen were collected during Trans-Atlantic Geotraverse (TAG) NOAA cruises using the R/V Discoverer. Two more hydrogenous ferromanganese crusts wer also analysed. They were collected from the eastern extension of the Atlantis Fracture Zone aboard the R/V Kurchatov in 1975. Radiochemical neutron activation analysis has been used to determine Tl, Rb. Cs. Co and Cr. Iron, Mn, and Mg concentrations in the crystalline samples and Mn crusts have been determined by AAS. K was determined by flame photometry, and S in these samples (as well as five glasses) has been determined with a Leco Automatic Sulfur titrator.
Keywords:
AK20-T0-75-1A; Akademik Kurchatov; AKU20; Aluminium oxide; Atlantic Ocean; Atomic absorption spectrophotometry; Caesium; Chromium; Cobalt; Discoverer (1966); Dredge; Dredge, chain bag; DRG; DRG_C; Elevation of event; Event label; Flame photometry; Geochemistry; Identification; Iron oxide, FeO; Latitude of event; Leco Automatic Sulfur titrator; Longitude of event; Magnesium oxide; manganese micronodule; manganese nodule; Manganese oxide; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; ocean; Potassium oxide; Radiochemical neutron activation analysis (RNAA); Rock type; Rubidium; Sample type; sediment; Sulfur; T0-75-1A; T3-71D 148-2B; T3-72-17; T4-73-2A3; T4-73-6; TAG1971; TAG1971-2B; TAG1972; TAG1972-17; TAG1973; TAG1973-2A; TAG1973-6A; Thallium; Trans-Atlantic Geotraverse 1971; Trans-Atlantic Geotraverse 1972; Trans-Atlantic Geotraverse 1973
Type:
Dataset
Format:
text/tab-separated-values, 121 data points
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