Minor element geochemistry of Lake Michigan ferromanganese nodules, supplement to: Edgington, David N; Callender, Edward (1970): Minor element geochemistry of Lake Michigan ferromanganese nodules. Earth and Planetary Science Letters, 8(2), 97-100


Samples of ferromanganese nodules from several localities in Lake Michigan have been analyzed for their minor element content utilizing neutron activation techniques. The thorium and uranium levels in Lake Michigan nodules exhibit marked dissimilarities with marine nodules. The radium content of these freshwater nodules is substantially higher than the reported marine values.The concentrations of barium in the Lake Michigan nodules appear to be abnormally high. Although barium could be present as minute segregations of the mineral barite, patterns obtained using the electron microprobe suggest it is evently dispersed throughout the nodules. The average arsenic content of these freshwater nodules is at least twice as great as that reported for highly oxidized marine sediments. If all this arsenic is dissolved and released into Green Bay as a result of changing environmental conditions (eutrophication), the concentration in the water of Green Bay would be several times the maximum permissible level for drinking water.

The samples have been dried at 110°C.

DOI https://doi.org/10.1594/PANGAEA.848032
Related Identifier https://doi.org/10.1016/0012-821X(70)90157-3
Related Identifier https://doi.org/10.7289/V52Z13FT
Related Identifier https://doi.org/10.7289/V53X84KN
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.848032
Creator Edgington, David N; Callender, Edward
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Publication Year 1970
Rights Creative Commons Attribution 3.0 Unported
OpenAccess true
Language English
Resource Type Supplementary Dataset
Format text/tab-separated-values
Size 241 data points
Discipline Earth System Research
Spatial Coverage (-87.782W, 44.877S, -85.210E, 45.495N); Green Bay - Lake Michigan; Lake Michigan