de.pangaea.dataset961652 und dataset PANGAEA
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https://www.pangaea.de/ information pointOfContact 2026-07-15T20:25:07Z https://doi.pangaea.de/10.1594/PANGAEA.961652 <gco:CharacterString>Chemical analyses of hydrothermal deposits and associated material from Transform fault 'A' on the Mid-Atlantic Ridge, FAMOUS area</gco:CharacterString> 2023-08-21T05:22:55 publication https://doi.org/10.1594/PANGAEA.961652 Hoffert, Michel author Perseil, E A author Hekinian, Roger author Choukroune, P author Needham, H D author Francheteau, Jean author Le Pichon, Xavier author PANGAEA
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https://www.pangaea.de/ information publisher tableDigital 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 Fe-Mn concretions with respect to the clay-rich fraction: clay-rich hydrothermal material and black Fe-Mn concretions (nodules). These materials have been analysed for their chemical composition by arc spectrometry using an ARL quantometer were made at the University of Strasbourg. This method consists of melting the sample in a mixture of lithium tetraborate and then introducing the melt into in a glycolated solvent prior analysis. Trace elements were determined using graphite discs . Na and K were determined by emission spectrometry (precision of +- 2.0%). completed Hoffert, Michel principalInvestigator Geochemistry manganese micronodule manganese nodule ocean Sediment theme <gco:CharacterString>PANGAEA Keyword List</gco:CharacterString> 1995-01-01 creation PANGAEA
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https://www.pangaea.de/ information pointOfContact NOAA-MMS NOAA and MMS Marine Minerals Geochemical Database theme <gco:CharacterString>PANGAEA Project List</gco:CharacterString> 1995-01-01 creation PANGAEA
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https://www.pangaea.de/ information pointOfContact copyright copyright CC-BY-4.0: Creative Commons Attribution 4.0 International textTable und geoscientificInformation -33.06700000000001 -33.061500000000024 36.940833 36.945 1974-07-24T00:00:00 1974-08-03T00:00:00 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1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions.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 2, pp. 706 of the related publication. Event label thematicClassification Latitude of event thematicClassification Longitude of event thematicClassification Elevation of event physicalMeasurement m m Identification thematicClassification Sample type thematicClassification Silicon dioxide physicalMeasurement Arc spectrometry % % Aluminium oxide physicalMeasurement Arc spectrometry % % Iron oxide, Fe2O3 physicalMeasurement Arc spectrometry % % Manganous manganic oxide physicalMeasurement Arc spectrometry % % Magnesium oxide physicalMeasurement Arc spectrometry % % Calcium oxide physicalMeasurement Arc spectrometry % % Sodium oxide physicalMeasurement Optical emission spectrography % % Potassium oxide physicalMeasurement Optical emission spectrography % % Titanium(II) oxide physicalMeasurement Optical emission spectrography % % Loss on ignition physicalMeasurement Wet chemistry; at 1000°C % % Strontium physicalMeasurement Optical emission spectrography mg/kg mg/kg Barium physicalMeasurement Optical emission spectrography mg/kg mg/kg Vanadium physicalMeasurement Optical emission spectrography mg/kg mg/kg Nickel physicalMeasurement Optical emission spectrography mg/kg mg/kg Cobalt physicalMeasurement Optical emission spectrography mg/kg mg/kg Chromium physicalMeasurement Optical emission spectrography mg/kg mg/kg Boron physicalMeasurement Optical emission spectrography mg/kg mg/kg Zinc physicalMeasurement Optical emission spectrography mg/kg mg/kg Gallium physicalMeasurement Optical emission spectrography mg/kg mg/kg Copper physicalMeasurement Optical emission spectrography mg/kg mg/kg Description thematicClassification text/tab-separated-values unknown https://doi.pangaea.de/10.1594/PANGAEA.961652?format=textfile download dataset The data set was checked for completeness, correctness, and consistency of metainformation. Validity of used methods was checked and - if applicable - precision and range of data. EVENT LABEL: CY-74-23-12 * LATITUDE: 36.941000 * LONGITUDE: -33.061500 * DATE/TIME: 1974-07-24T00:00:00 * ELEVATION: -2695.0 m * LOCATION: Mid-Atlantic Ridge * CAMPAIGN: FAMOUS_06-74 * BASIS: Le Noroit * METHOD/DEVICE: Grab, on Cyana [Submersible] 1974-07-24T00:00:00 EVENT LABEL: CY-74-26-14 * LATITUDE: 36.945000 * LONGITUDE: -33.067000 * DATE/TIME: 1974-08-01T00:00:00 * ELEVATION: -2690.0 m * LOCATION: Mid Atlantic Ridge * CAMPAIGN: FAMOUS_06-74 * BASIS: Le Noroit * METHOD/DEVICE: Grab, on Cyana [Submersible] 1974-08-01T00:00:00 EVENT LABEL: CY-74-26-15 * LATITUDE: 36.941667 * LONGITUDE: -33.062667 * DATE/TIME: 1974-08-03T00:00:00 * ELEVATION: -2690.0 m * LOCATION: Mid-Atlantic Ridge * CAMPAIGN: FAMOUS_06-74 * BASIS: Le Noroit * METHOD/DEVICE: Grab, on Cyana [Submersible] 1974-08-03T00:00:00 EVENT LABEL: CY-74-26-16 * LATITUDE: 36.940833 * LONGITUDE: -33.063355 * DATE/TIME: 1974-08-03T00:00:00 * ELEVATION: -2690.0 m * LOCATION: Mid-Atlantic Ridge * CAMPAIGN: FAMOUS_06-74 * BASIS: Le Noroit * METHOD/DEVICE: Grab, on Cyana [Submersible] 1974-08-03T00:00:00 Related to <gco:CharacterString>In situ structural observations along Transform Fault A in the FAMOUS area, Mid-Atlantic Ridge</gco:CharacterString> 1978-01-01 publication https://doi.org/10.1130/0016-7606(1978)89%3C1013:ISSOAT%3E2.0.CO;2 Choukroune, P author Francheteau, Jean author Le Pichon, Xavier author documentDigital Geological Society of America Bulletin 89(7) 1013 Related to <gco:CharacterString>Hydrothermal deposits sampled by diving saucer in transform fault "A" near 37°N on the Mid-Atlantic Ridge, FAMOUS Area</gco:CharacterString> 1978-01-01 publication Hoffert, M author Perseil, E A author Hekinian, Roger author Choukroune, P author Needham, H D author Francheteau, Jean author Le Pichon, Xavier author documentHardcopy Oceanologica Acta 1(1) 699-712 Related to <gco:CharacterString>Chemical analyses of Fe-Mn coatings separated from the margins of basaltic rocks from Transform Fault 'A' and from the the Rift Valley near 36°50'N in the Mid-Atlantic Ridge</gco:CharacterString> 2023-01-01 publication https://doi.org/10.1594/PANGAEA.961653 Hoffert, Michel author Perseil, E A author Hekinian, Roger author Choukroune, P author Needham, H D author Francheteau, Jean author Le Pichon, Xavier author documentDigital Source <gco:CharacterString>The NOAA and MMS Marine Minerals Geochemical Database</gco:CharacterString> 1992-01-01 publication https://doi.org/10.7289/V52Z13FT Grant, John Bruce author Moore, Carla J
carla.j.moore@noaa.gov
https://orcid.org/0000-0002-2610-8648 information author Alameddin, George author Chen, Kuiying author Barton, Mark author documentDigital National Geophysical Data Center, NOAA Further details <gco:CharacterString>The NOAA and MMS Marine Minerals Bibliography</gco:CharacterString> 1992-01-01 publication https://doi.org/10.7289/V53X84KN Warnken, Robin R
rrw@luna.ngdc.noaa.gov
author Virden, William T author Moore, Carla J
carla.j.moore@noaa.gov
https://orcid.org/0000-0002-2610-8648 information author documentDigital National Geophysical Data Center, NOAA