Piper, David Z; Williamson, M E (1977): Composition of ferromanganese nodules from the Pacific [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.868609, Supplement to: Piper, DZ; Williamson, ME (1977): Composition of Pacific Ocean ferromanganese nodules. Marine Geology, 23(4), 285-303, https://doi.org/10.1016/0025-3227(77)90036-6
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Published: 1977 (exact date unknown) • DOI registered: 2016-12-16
Abstract:
Bulk composition of ferromanganese nodules from the pelagic environment of the Pacific Ocean is apparently related to nodule-growth rate, sediment-accumulation rate, and biologic productivity in the overlying seawater. Nodules with a high Mn/Fe ratio and high Ni and Cu concns tend to occur in areas where primary productivity in the surface layer of the ocean is high and the sediment accumulation rate low. They may have a Mn/Fe ratio as low as one and accrete at rates as low as 1 mm/10 M yrs. Nodules with a larger Mn/Fe ratio apparently have growth rates that are greater by as much as a factor of 10.
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: 5.350692 * Median Longitude: -171.387476 * South-bound Latitude: -36.550000 * West-bound Longitude: 36.733290 * North-bound Latitude: 40.383333 * East-bound Longitude: -85.233000
Date/Time Start: 1951-09-10T00:00:00 * Date/Time End: 1970-09-06T00:00:00
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1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions.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:
2 datasets
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Datasets listed in this publication series
- Piper, DZ; Williamson, ME (1977): Chemical composition of ocean manganese nodules from the Pacific Ocean using X-ray emission spectroscopy. https://doi.org/10.1594/PANGAEA.868608
- Piper, DZ; Williamson, ME (1977): (Table 1, page 287) Chemical composition of ocean manganese nodules from the Pacific and Indian oceans using neutral activation analysis and atomic absorption spectroscopy. https://doi.org/10.1594/PANGAEA.868607