Ebbing, J; van der Borg, Klaas; de Jong, Arie F M; Nederlof, H P (1991): Geochemistry on sediment and nodules from the Madeira Abyssal Plain [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.888582, Supplement to: Ebbing, J et al. (1991): Continuous surface dwelling of manganese nodules on a hill on the Madeira Abyssal Plain during abrupt sedimentation changes. Marine Geology, 98(1), 73-82, https://doi.org/10.1016/0025-3227(91)90036-4
Always quote citation above when using data! You can download the citation in several formats below.
Published: 1991 (exact date unknown) • DOI registered: 2018-05-16
Abstract:
The accretion rate of manganese nodules and the sedimentation rate of the underlying sediment has been studied with 10Be and 14C on a nodule covered hill in the Madeira Abyssal Plain. The accretion rate of (3.2 +/- 0.6) mm/Ma for the nodules is considerably smaller than the average sedimentation rate of 12 mm/ka for the last 50-100 ka. The mechanism that kept the nodules at the surface in this specific environment during the last 40 ka is likely to be flotation. The discovery of a large manganese-covered concretion in a piston core points to a long period of sediment winnowing. The 14C analyses also seem to point to an increase in the sedimentation rate round 6500 yrs B.P.
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:
Median Latitude: 31.433745 * Median Longitude: -25.294998 * South-bound Latitude: 31.411660 * West-bound Longitude: -25.300000 * North-bound Latitude: 31.500000 * East-bound Longitude: -25.293330
Date/Time Start: 1986-10-01T00:00:00 * Date/Time End: 1986-10-01T00:00:00
Comment:
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1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions.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.
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
4 datasets
Download Data
Datasets listed in this publication series
- Ebbing, J; van der Borg, K; de Jong, AFM et al. (2018): (Table 1, page 76) 10Be concentration in manganese nodules from the Madeira Abyssal Plain, Atlantic Ocean. https://doi.org/10.1594/PANGAEA.888451
- Ebbing, J; van der Borg, K; de Jong, AFM et al. (1991): (Table 1, page 76) 10Be concentration in a manganese coating and sediment from the Madeira Abyssal Plain, Atlantic Ocean. https://doi.org/10.1594/PANGAEA.888579
- Ebbing, J; van der Borg, K; de Jong, AFM et al. (1991): (Table 3, page 78) Element composition versus depth of layers inside manganese nodules of the Madeira Abyssal Plain. https://doi.org/10.1594/PANGAEA.888580
- Ebbing, J; van der Borg, K; de Jong, AFM et al. (1991): (Table 4, page 80) Element composition versus depth inside sediment cores taken from the Madeira Abyssal Plain. https://doi.org/10.1594/PANGAEA.888581