Lead isotopes in manganese nodules

Details Lead isotopes in manganese nodules Lead isotopes in manganese nodules

Aug 1959

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1959gecoa..17...21c&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 17, Issue 1-2, pp.21-31

Computer Science

9

Scientific paper

The isotopic compositions of leads which were isolated from manganese nodules of the Atlantic and the Pacific Oceans were determined. The Atlantic leads were more radiogenic than those of the Pacific. The Pacific samples showed a trend of increasing radiogenic leads from the north-west toward the south-east Pacific. The relationship between the collecting sites and the isotopic compositions of leads can be used to trace the circulation patterns of deep-water masses. The oceanic leads originated from rock systems whose uranium and lead contents have differentiated at various times appreciably later than 4·5 × 10 9 years.

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