de.pangaea.dataset943685 und de.pangaea.dataset943688 dataset PANGAEA

info@pangaea.de

https://www.pangaea.de/ information pointOfContact 2026-04-30T21:33:57Z https://doi.pangaea.de/10.1594/PANGAEA.943685 2022-05-04T11:14:59 publication https://doi.org/10.1594/PANGAEA.943685 Reyss, Jean-Louis

Jean-Louis.Reyss@lsce.cnrs-gif.fr

author Lemaitre, Nathalie author Ku, Teh-Lung author Marchig, Vesna author Southon, John R author Nelson, D Erle author Vogel, John S author PANGAEA

info@pangaea.de

https://www.pangaea.de/ information publisher tableDigital Attempts have been made to study the entire growth history of a manganese nodule from the northern part of Peru Basin in the Pacific using radiochemical profiles of 230Th232Th, 227Th230Th, and 10Be9Be. Combined with the observations on Fe-Mn contents and textural variation, the radiochemical data indicate that the nodule grew more or less concentrically throughout most of its existence since it formed 1.5 my ago, receiving Mn from both bottom water and pore water. This condition appeared to have changed about 180 ky ago when the growth became asymmetric in that the top and bottom sides became fixed in their relative positions on the sea floor. Since then, the bottom side accreted with a fast rate of close to 200 mm/my, apparently fueled by the supply of diagenetically remobilized Mn in pore water from the sediment substrate. In the meantime, the top side accumulated at about 6 mm/my, a value which is in the normal range for deep-sea nodules having their Mn supplied from the hydrogenous source. completed Reyss, Jean-Louis

Jean-Louis.Reyss@lsce.cnrs-gif.fr

principalInvestigator growth manganese nodules ocean theme 1995-01-01 creation PANGAEA

info@pangaea.de

https://www.pangaea.de/ information pointOfContact NOAA-MMS NOAA and MMS Marine Minerals Geochemical Database theme 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 -92.0 -92.0 -7.15 -7.15 1979-09-01T00:00:00 1979-09-01T00:00:00 0.0 0.0 Digitized Table 4a, Page 2405; Points of measurements are illustrated in Fig. 1. . 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1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions.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. Identification thematicClassification Latitude of event thematicClassification Longitude of event thematicClassification Elevation of event physicalMeasurement m m DEPTH, sediment/rock physicalMeasurement m m Distance physicalMeasurement mm mm Distance, minimum physicalMeasurement mm mm Distance, maximum physicalMeasurement mm mm Beryllium-9 physicalMeasurement Atomic absorption spectrometry (AAS) µg/g µg/g Beryllium-9, standard deviation physicalMeasurement Atomic absorption spectrometry (AAS) ± ± Beryllium-10 physicalMeasurement Atomic absorption spectrometry (AAS) 10**9 atoms/g 10**9 atoms/g Beryllium-10, standard deviation physicalMeasurement Atomic absorption spectrometry (AAS) ± ± Beryllium-10/Beryllium-9 physicalMeasurement Atomic absorption spectrometry (AAS) 10**-7 atoms/atoms 10**-7 atoms/atoms Beryllium-10/Beryllium-9 ratio, standard deviation physicalMeasurement Atomic absorption spectrometry (AAS) ± ± Manganese physicalMeasurement Atomic absorption spectrometry (AAS) % % Iron physicalMeasurement Atomic absorption spectrometry (AAS) % % Deposit type thematicClassification text/tab-separated-values unknown https://doi.pangaea.de/10.1594/PANGAEA.943685?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: SO11_262DK (262GBHF) * LATITUDE: -7.150000 * LONGITUDE: -92.000000 * DATE/TIME: 1979-09-01T00:00:00 * ELEVATION: -4175.0 m * LOCATION: Peru Basin, Pacific Ocean * CAMPAIGN: SO11 * BASIS: Sonne * METHOD/DEVICE: Dredge, box 1979-09-01T00:00:00 Related to 1985-01-01 publication https://doi.org/10.1016/0016-7037(85)90240-6 Reyss, Jean-Louis

Jean-Louis.Reyss@lsce.cnrs-gif.fr

author Lemaitre, Nathalie author Ku, Teh-Lung author Marchig, Vesna author Southon, John R author Nelson, D Erle author Vogel, John S author documentDigital Geochimica et Cosmochimica Acta 49(11) 2401-2408 Source 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 documentHardcopy Further details 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