PANGAEA_948513 Analytical results on basalt samples from the Mid-Atlantic Ridge McGoldrick, Peter J; Keays, Reid R; Scott, Bob B Analytical results on basalt samples from the Mid-Atlantic Ridge 2022-09-20 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.948513 Investigator Peter J McGoldrick Earth Science Event label Latitude of event Longitude of event Elevation of event Identification Rock type Sample type Silicon dioxide Titanium dioxide Aluminium oxide Iron oxide, FeO Manganese oxide Magnesium oxide Calcium oxide Sodium oxide Potassium oxide Thallium Rubidium Caesium Sulfur Cobalt Chromium geoscientificInformation Dredge Geochemistry manganese micronodule manganese nodule ocean Sediment T3-71-10C T3-71-7A T3-72-16 T3-72-17 T4-73-6 TAG1971 TAG1971-10C TAG1971-7A TAG1972 TAG1972-16 TAG1972-17 TAG1973 TAG1973-6A Electron Probe Microanalysis (EPMA) Radiochemical neutron activation analysis (RNAA) Discoverer (1966) Complete 25.3033333333 29.7833333333 -45.3066666667 -42.7333333333 NOAA-MMS NOAA and MMS Marine Minerals Geochemical Database unrestricted CC-BY-4.0: Creative Commons Attribution 4.0 International English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

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Bremen Bremen 28359 Germany online 188 data points text/tab-separated-values McGoldrick, Peter J; Keays, Reid R; Scott, Bob B (1979): Thallium: a sensitive indicator of rock/seawater interaction and of sulfur saturation of silicate melts. Geochimica et Cosmochimica Acta, 43(8), 1303-1311, https://doi.org/10.1016/0016-7037(79)90120-0 McGoldrick, Peter J; Keays, Reid R; Scott, Bob B (2022): Analytical results on palagonite samples and manganese crusts from the Mid-Atlantic Ridge [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.948515 Grant, John Bruce; Moore, Carla J; Alameddin, George; Chen, Kuiying; Barton, Mark (1992): The NOAA and MMS Marine Minerals Geochemical Database. National Geophysical Data Center, NOAA, https://doi.org/10.7289/V52Z13FT Warnken, Robin R; Virden, William T; Moore, Carla J (1992): The NOAA and MMS Marine Minerals Bibliography. National Geophysical Data Center, NOAA, https://doi.org/10.7289/V53X84KN

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 Trans-Atlantic Geotraverse (TAG) NOAA cruises using the R/V Discoverer. Radiochemical neutron activation analysis has been used to determine Tl, Rb. Cs. Co and Cr. Major element and S analyses of the glasses were determined by electron probe microanalysts of small polished chips of glass. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.948513"! ** From 1983 until 1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions. At the time it was the most extended data compilation on ferromanganese deposits world wide. Initially published in a proprietary format incompatible with present day standards it was jointly decided by AWI and NOAA to transcribe this legacy data into PANGAEA. This transfer is augmented by a careful checking of the original sources when available and the encoding of ancillary information (sample description, method of analysis...) not present in the NOAA-MMS database. This dataset represents the digitized Table 1 - pp. 1306-1307 of the related publication.

https://doi.org/10.1016/0016-7037(79)90120-0 Thallium: a sensitive indicator of rock/seawater interaction and of sulfur saturation of silicate melts https://doi.org/10.7289/V52Z13FT The NOAA and MMS Marine Minerals Geochemical Database https://doi.org/10.7289/V53X84KN The NOAA and MMS Marine Minerals Bibliography https://doi.pangaea.de/10.1594/PANGAEA.948515 Analytical results on palagonite samples and manganese crusts from the Mid-Atlantic Ridge https://en.wikipedia.org/wiki/Calcium_oxide Calcium oxide https://en.wikipedia.org/wiki/NOAAS_Discoverer_(R_102) Discoverer (1966) https://en.wikipedia.org/wiki/Silicon_dioxide Silicon dioxide https://en.wikipedia.org/wiki/Thallium Thallium https://en.wikipedia.org/wiki/Titanium_dioxide Titanium dioxide https://wiki.pangaea.de/wiki/NOAA-MMS NOAA-MMS DIF 9.4 2022-09-20 2026-04-02