Reyss, Jean-Louis; Lemaitre, Nathalie; Ku, Teh-Lung; Marchig, Vesna; Southon, John R; Nelson, D Erle; Vogel, John S (2022): Beryllium isotopes composition of layers from the bottom side of Mn nodule SO11_262DK (262GBHF) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.943686, In: Reyss, J-L et al. (2022): Growth of a manganese nodule from Peru Basin: A radiochemical anatomy [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.943688
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Abstract:
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.
Related to:
Reyss, Jean-Louis; Lemaitre, Nathalie; Ku, Teh-Lung; Marchig, Vesna; Southon, John R; Nelson, D Erle; Vogel, John S (1985): Growth of a manganese nodule from Peru Basin: A radiochemical anatomy. Geochimica et Cosmochimica Acta, 49(11), 2401-2408, https://doi.org/10.1016/0016-7037(85)90240-6
Source:
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
Further details:
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
Project(s):
Coverage:
Latitude: -7.150000 * Longitude: -92.000000
Date/Time Start: 1979-09-01T00:00:00 * Date/Time End: 1979-09-01T00:00:00
Minimum DEPTH, sediment/rock: 0 m * Maximum DEPTH, sediment/rock: 0 m
Event(s):
Comment:
Digitized Table 4b, 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.
Parameter(s):
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
89 data points