Carbon and sulfur isotopic signatures of ancient life and environment at the microbial scale: Neoarchean shales and carbonates.

@article{Williford2016CarbonAS,
  title={Carbon and sulfur isotopic signatures of ancient life and environment at the microbial scale: Neoarchean shales and carbonates.},
  author={Kenneth H Williford and Tomohiro Ushikubo and Kevin Lepot and Kouki Kitajima and Christian Hallmann and Michael J. Spicuzza and Reinhard Kozdon and Jennifer L Eigenbrode and Roger E Summons and John Witte Grand Valley},
  journal={Geobiology},
  year={2016},
  volume={14 2},
  pages={105-28}
}
An approach to coordinated, spatially resolved, in situ carbon isotope analysis of organic matter and carbonate minerals, and sulfur three- and four-isotope analysis of pyrite with an unprecedented combination of spatial resolution, precision, and accuracy is described. Organic matter and pyrite from eleven rock samples of Neoarchean drill core express nearly the entire range of δ(13) C, δ(34) S, Δ(33) S, and Δ(36) S known from the geologic record, commonly in correlation with morphology… CONTINUE READING

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