Journal
SCIENCE
Volume 287, Issue 5460, Pages 2000-2002Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.287.5460.2000
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A high-precision iron isotope time series for a ferromanganese crust demonstrates that the iron isotope composition in North Atlantic Deep Water has changed substantially over the past 6 million years and that iron isotope variations in the crust are closely correlated to those of Lead isotopes. The close correlation between the two isotope series indicates that the observed iron isotope variations predominantly reflect those of iron input from terrigenous sources and provides no evidence for biologically induced mass fractionation within North Atlantic Deep Water.
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