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Geological Factors Related to Characteristics of Seafloor Manganese Nodule Deposits.

Authors
Frazer-JZ; Fisk-MB
Source
NTIS: PB/81-145831 :41 pages
Link
NIOSHTIC No.
10007158
Abstract
The effect of geological factors such as environment of deposition, sediment type, water depth, and local topography on nodule abundance and composition are studied. Statistical analyses of data from the sio sediment data bank are presented. Nodule abundance is shown to be strongly dependent on sedimentation rates, with the most abundant deposits occurring where the sedimentation is lowest. Copper enrichment in nodules is found to be due to the concentration of this element by planktonic organisms which are limited to equatorial regions. Cobalt enrichment, generally greater in crusts than in nodules, is shown to be associated with volcanic seamounts in the mid-Pacific region. Regional variations in nickel and manganese contents, local variations in composition and abundance, and the inverse correlation between grade and abundance are discussed.
Publication Date
19800101
Document Type
CP; Final Contract Report;
Fiscal Year
1980
NTIS Accession No.
PB81-145831
NTIS Price
A04
Identifying No.
OFR 142-80
NIOSH Division
WFOC;
Source Name
NTIS: PB/81-145831
Performing Organization
Scripps Inst. of Oceanography
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