Boström, Kurt; Peterson, Melvin N A (2022): Chemical composition of carbonate-free fraction of sediments from the East Pacific Rise [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.950415
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Published: 2022-11-09 • DOI registered: 2022-12-09
Abstract:
The expedition "RISEPAC" in 1961 of Scripps Institution of Oceanography crossed the East Pacific Rise at about 12-14°S between 90° and 140 °W, securing heat flow measurements and sediment samples. The sediments are predominantly dark brown clayey sediments at deeper parts of the traverse, gradually becoming lighter brown to almost brownish white on the rise due to increase in carbonate content. On the very crest of the rise where the heat flow reaches a maximum, the sediments are very dark brown with lower carbonate content although well above the compensation depth. To avoid fortuitous results a thick layer from each core was sampled, usually the interval 30-70 cm. Before analysis the samples were dried at 60 °C and ground and further leached with 0.2-molar acetic acid at 50°C for 1 h in order to separate the carbonate free fraction which was then analysed using wet chemistry methods.
Related to:
Boström, Kurt; Peterson, Melvin N A (1969): The origin of aluminum-poor ferromanganoan sediments in areas of high heat flow on the East Pacific Rise. Marine Geology, 7(5), 427-447, https://doi.org/10.1016/0025-3227(69)90016-4
Boström, Kurt; Peterson, Melvin N A; Joensuu, Oiva; Fisher, David E (1969): Aluminum-poor ferromanganoan sediments on active oceanic ridges. Journal of Geophysical Research, 74(12), 3261-3270, https://doi.org/10.1029/JB074i012p03261
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: -13.667062 * Median Longitude: -114.935319 * South-bound Latitude: -14.683300 * West-bound Longitude: -139.575000 * North-bound Latitude: -12.500000 * East-bound Longitude: -90.500000
Date/Time Start: 1961-12-05T00:00:00 * Date/Time End: 1961-12-28T00:00:00
Minimum DEPTH, sediment/rock: 0.450 m * Maximum DEPTH, sediment/rock: 0.540 m
Event(s):
RISP-46G * Latitude: -13.716700 * Longitude: -90.500000 * Date/Time: 1961-12-05T00:00:00 * Elevation: -3980.0 m * Recovery: 0.97 m * Location: Pacific Ocean * Campaign: RISEPAC * Basis: Spencer F. Baird * Method/Device: Gravity corer (GC)
RISP-50G * Latitude: -13.600000 * Longitude: -96.700000 * Date/Time: 1961-12-07T00:00:00 * Elevation: -4120.0 m * Recovery: 1.18 m * Location: Pacific Ocean * Campaign: RISEPAC * Basis: Spencer F. Baird * Method/Device: Gravity corer (GC)
RISP-51G * Latitude: -13.533300 * Longitude: -97.800000 * Date/Time: 1961-12-07T00:00:00 * Elevation: -3742.0 m * Recovery: 1.18 m * Location: Pacific Ocean * Campaign: RISEPAC * Basis: Spencer F. Baird * Method/Device: Gravity corer (GC)
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.
This dataset represents the digitized Table 3, pp. 432-433 of the related publication.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Boström, Kurt | |||
| 2 | Identification | ID | Boström, Kurt | |||
| 3 | DEPTH, sediment/rock | Depth sed | m | Boström, Kurt | Geocode | |
| 4 | Depth, top/min | Depth top | m | Boström, Kurt | ||
| 5 | Depth, bottom/max | Depth bot | m | Boström, Kurt | ||
| 6 | Aluminium oxide | Al2O3 | % | Boström, Kurt | ||
| 7 | Silicon dioxide | SiO2 | % | Boström, Kurt | ||
| 8 | Titanium dioxide | TiO2 | % | Boström, Kurt | ||
| 9 | Iron | Fe | % | Boström, Kurt | ||
| 10 | Manganese | Mn | % | Boström, Kurt | ||
| 11 | Copper | Cu | mg/kg | Boström, Kurt | ||
| 12 | Zinc | Zn | mg/kg | Boström, Kurt | ||
| 13 | Chromium | Cr | mg/kg | Boström, Kurt | ||
| 14 | Nickel | Ni | mg/kg | Boström, Kurt | ||
| 15 | Cobalt | Co | mg/kg | Boström, Kurt | ||
| 16 | Arsenic | As | mg/kg | Boström, Kurt | ||
| 17 | Molybdenum | Mo | mg/kg | Boström, Kurt | ||
| 18 | Cadmium | Cd | mg/kg | Boström, Kurt | ||
| 19 | Vanadium | V | mg/kg | Boström, Kurt | ||
| 20 | Boron | B | mg/kg | Boström, Kurt | ||
| 21 | Sediment type | Sediment | Boström, Kurt |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
389 data points