Kadko, David; Burckle, Lloyd H (1980): (Figure 1, page 726) Thorium 230 excess values as a function of distance inside layers of a manganese nodule from DOMES Site B, Pacific Ocean [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.881434, Supplement to: Kadko, D; Burckle, LH (1980): Manganese nodule growth rates determined by fossil diatom dating. Nature, 287(5784), 725-726, https://doi.org/10.1038/287725a0
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Abstract:
We report here that a manganese nodule from the Central Pacific manganese nodule province has been dated by fossil diatoms found in mud scraped from near the nodule's centre. The nodule was taken at DOMES Site B from Core B55-56 at 11°50.3'N and 137°28.2'W in a water depth of 4,892 m. It was resting on the sediment surface, with about 1.5 cm of the nodule bottom (of a total nodule height of 4.2 cm) buried in the mud. The top surface of the nodule was covered with a smooth manganese coating, but the bottom had a very rough, crusty texture. It was found that recent mud had leaked in through cracks in the nodule bottom, but that there were no pre-Pleistocene diatoms in this material. The date obtained was compared with the growth rate determined by the 230Th excess method and found to be in reasonable agreement. This study adds to the work of Harada1,2 on the biostratigraphy (mainly coccoliths) of manganese nodules.
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: 11.810000 * Longitude: -137.405000
Date/Time Start: 1975-11-09T00:00:00 * Date/Time End: 1975-11-09T00:00:00
Minimum Elevation: -4800.0 m * Maximum Elevation: -4800.0 m
Event(s):
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1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions.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.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Identification | ID | ||||
| 2 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 3 | DISTANCE | Distance | cm | Geocode | ||
| 4 | Thorium-230 excess | 230Th xs | dpm/g | Alpha counting | ||
| 5 | Thorium-230 excess, standard deviation | 230Th xs std dev | ± | |||
| 6 | Deposit type | Deposit type | ||||
| 7 | Description | Description |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
33 data points