Unknown
PANGAEA
In:
Supplement to: Piper, David Z; Williamson, M E (1977): Composition of Pacific Ocean ferromanganese nodules. Marine Geology, 23(4), 285-303, https://doi.org/10.1016/0025-3227(77)90036-6
Publication Date:
2023-08-28
Description:
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.
Keywords:
NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS
Type:
Dataset
Format:
application/zip, 2 datasets
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