Accumation rates of manganese in manganese nodules using differential 230Th-231Pa activities

The manganese content of 7 manganese nodules was determined by neutron activation. The decrease of unsupported 231Pa and 230Th in the outer few tenths of millimeters was used to evaluate Mn accumulation. Because CaCO3 is a Mn-free diluent, the Mn concentration results and the nodules accumulation ra...

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Bibliographic Details
Main Authors: Bender, Michael L, Ku, Teh-Lung, Broecker, Wallace S
Format: Dataset
Language:English
Published: PANGAEA 2022
Subjects:
Accumulation rate
manganese
Atlantic Ocean
Deposit type
Dredge
rock
DRG
DRG_R
Elevation of event
ELT17
ELT17.036-BT
Eltanin
Event label
Geochemistry
Identification
Indian Ocean
Latitude of event
Longitude of event
manganese micronodule
manganese nodule
Neutron activation analysis
NOAA and MMS Marine Minerals Geochemical Database
NOAA-MMS
ocean
Pacific Ocean
PC
Piston corer
sediment
see description in data abstract
Southern Ocean
TRAWL
Trawl net
V16
V16-19SBT
V16-3SBT
V18
V18-32RD
V20
V20-4RD
V21
V21-2RD
V21-71
Vema
Indian
Pacific
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.949668
https://doi.org/10.1594/PANGAEA.949668
Description
Summary:The manganese content of 7 manganese nodules was determined by neutron activation. The decrease of unsupported 231Pa and 230Th in the outer few tenths of millimeters was used to evaluate Mn accumulation. Because CaCO3 is a Mn-free diluent, the Mn concentration results and the nodules accumulation rate results are given on a carbonate-free basis. Nodule densities were assumed to be 2.5 g/cm³. The Mn accumulation rates are calculated per unit cross sectional area of the nodule rather than per unit surface area.

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