WIDESPREAD OCEAN OXIDATION IN THE EDIACARAN YANGTZE PLATFORM: CARBON ISOTOPE AND FE GEOCHEMISTRY EVIDENCE FROM DEEP WATER SECTIONS
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Isotope Geochemistry
Carbon fibers
Ocean chemistry
Isotope Geochemistry
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The study of “non-traditional” stable isotopes (e.g., Fe, Mo, Zn, Cr, and Cu) has blossomed in the past decade as analytical techniques have improved, particularly with the development of high-precision MC-ICPMS. The application of Ni isotopes, however, remains largely unexplored. Because Ni has a complex chemistry, both in geological and biological systems and Ni isotopes encompass a wide mass range (∼10%), the potential for Ni isotope fractionation is significant. In particular, recent Ni isotope analysis (Cameron et al., 2009, PNAS v106, 10944–10948) have shown that methanogens fractionate Ni isotopes toward lighter isotopes which contrasts with the apparent Ni-isotope homogeneity in rocks. However, the variation of Ni isotopes in altered volcanic rock, hydrogeneous marine sediments and ore deposits remains unknown.
Isotope Geochemistry
Isotopic signature
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