Stable Isotope Biogechemistry

Welcome to the Fike Lab at Washington University

Stable Isotope Biogeochemistry involves the use of the stable isotopic compositions of elements that make up minerals and organic matter to understand and/or reconstruct biological activity.


Current Research

Sulfur cycling in seafloor methane seeps
Paleozoic Carbon Isotope Chemostratigraphy
Ordovician Hirnantian glaciation and mass extinction

Recent Publications

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Sedimentary mercury as a proxy for redox oscillations during the Cambrian SPICE event in western Newfoundland

Hagen, A., Jones, D. S., Tosca, N. J., Fike, D. A., & Pruss, S. B. 2022. “Sedimentary mercury as a proxy for redox oscillations during the Cambrian SPICE event in western Newfoundland”, Canadian Journal of Earth Sciences, 59(8): 504 – 520.DOI: 10.1139/cjes-2021-0108

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A global reassessment of the controls on iron speciation in modern sediments and sedimentary rocks: A dominant role for diagenesis

Pasquier, V., Fike, D. A., Revillon, S., & Halevy, I. 2022. “A global reassessment of the controls on iron speciation in modern sediments and sedimentary rocks: A dominant role for diagenesis” Geochimica et Cosmochimica Acta, 335: 211 – 230. DOI: 10.1016/j.gca.2022.08.037

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Testing the global significance of the sulfur isotope record of the ca. 2.0 Ga Zaonega Formation: a micro-scale S isotope investigation

Paiste, K., Fike, D. A., Kirsimäe, K., Jones, C., & Lepland, A. 2022. “Testing the global significance of the sulfur isotope record of the ca. 2.0 Ga Zaonega Formation: a micro-scale S isotope investigation”, Geochimica et Cosmochimica Acta, 331: 86 – 104. DOI: https://doi.org/10.1016/j.gca.2022.05.021