Kadko, David (1983): (Tables 1-3, pages 14-15) Radionuclide determinations on cores from the DOMES Site B and MANOP Site S in the Pacific Ocean [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.881163, Supplement to: Kadko, D (1983): A multitracer approach to the study of erosion in the northeast equatorial Pacific. Earth and Planetary Science Letters, 63(1), 13-33, https://doi.org/10.1016/0012-821X(83)90018-3
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Abstract:
Erosion of sediment at two sites within the siliceous-clay province of the northeast equatorial Pacific is investigated by examining radionuclide, radiolarian and percent smectite profiles of three cores. A numerical model of the sediment is presented that examines the effect of various particle rain rates, erosion rates and biological mixing parameters on these profiles. 230Th, because of its longer half-life, is a more sensitive tracer of erosion than231Pa. Because the input of these radionuclides into the sediment is not well defined however, conservative tracers, such as the percent smectite of the clay fraction and fossil radiolarians are used to constrain the rate of sediment recycling. Dissolution of radiolarians though can greatly affect the interpretation of the observed biostratigraphy.
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: 11.286110 * Median Longitude: -139.199890 * South-bound Latitude: 11.023330 * West-bound Longitude: -140.106670 * North-bound Latitude: 11.810000 * East-bound Longitude: -137.405000
Date/Time Start: 1975-11-09T00:00:00 * Date/Time End: 1979-05-26T00:00:00
Minimum DEPTH, sediment/rock: 0.005 m * Maximum DEPTH, sediment/rock: 0.305 m
Event(s):
K7905-047BC * Latitude: 11.025000 * Longitude: -140.088000 * Date/Time: 1979-05-18T00:00:00 * Elevation: -4919.0 m * Recovery: 0.33 m * Location: MANOP Site S, Pacific Ocean * Campaign: K7905 (MANOP) * Basis: Knorr * Method/Device: Box corer (BC)
Comment:
The dried, powdered samples (approximately 0.5 g) were dissolved in a mixture of nitric, perchloric and hydrofluoric acids to which 233Pa, 232U, and 238Th spikes were added. The nuclides were precipitated with iron hydroxide, taken up in 8N HCl and further separated.
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 | Event label | Event | Kadko, David | |||
| 2 | Identification | ID | Kadko, David | |||
| 3 | DEPTH, sediment/rock | Depth sed | m | Kadko, David | Geocode | |
| 4 | Depth, top/min | Depth top | m | Kadko, David | ||
| 5 | Depth, bottom/max | Depth bot | m | Kadko, David | ||
| 6 | Thorium-230 | 230Th | dpm/g | Kadko, David | Inductively coupled plasma - mass spectrometry (ICP-MS) | |
| 7 | Thorium-230, standard deviation | 230Th std dev | ± | Kadko, David | ||
| 8 | Uranium-234 | 234U | dpm/g | Kadko, David | ||
| 9 | Uranium-234, standard deviation | 234U std dev | ± | Kadko, David | ||
| 10 | Uranium-238 | 238U | dpm/g | Kadko, David | ||
| 11 | Uranium-238, standard deviation | 238U std dev | ± | Kadko, David | ||
| 12 | Protactinium-231 | 231Pa | dpm/g | Kadko, David | ||
| 13 | Protactinium-231, standard deviation | 231Pa std dev | ± | Kadko, David | ||
| 14 | Lead-210 excess | 210Pb xs | dpm/g | Kadko, David | ||
| 15 | Lead-210 excess, standard deviation | 210Pb xs std dev | ± | Kadko, David | ||
| 16 | Deposit type | Deposit type | Kadko, David |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
371 data points