Publications
Uranium isotopes in non-euxinic shale and carbonate reveal dynamic Katian marine redox conditions accompanying a decrease in biodiversity prior to the Late Ordovician mass extinction. Geochimica et Cosmochimica Acta 364, 22-43 (2024).
No evidence for expansion of global ocean euxinia during the base Stairsian mass extinction event (Tremadocian, Early Ordovician). Geochimica et Cosmochimica Acta 341, 116-131 (2023).
Estimating ancient seawater isotope compositions and global ocean redox conditions by coupling the molybdenum and uranium isotope systems of euxinic organic-rich mudrocks. Geochimica et Cosmochimica Acta 290, 76-103 (2020).
Temporal record of osmium concentrations and 187Os/188Os in organic-rich mudrocks: implications for the osmium geochemical cycle and the use of osmium as a paleoceanographic tracer. Geochimica et Cosmochimica Acta 216, 221-241 (2017).
Shale heavy metal isotope records of low environmental O2 between two Archean oxidation events. Frontiers in Earth Science 10, 833609 (2022).
Significance of 56Fe depletions in late-Archean shales and pyrite. Geochimica et Cosmochimica Acta 316, 87-104 (2022).
An expanded shale d98Mo record permits recurrent shallow marine oxygenation during the Neoarchean. Chemical Geology 532, 119391 (2020).
Multiple negative molybdenum isotope excursions in the Doushantuo Formation (South China) fingerprint complex redox-related processes in the Ediacaran Nanhua Basin. Geochimica et Cosmochimica Acta 261, 191-209 (2019).
Fully oxygenated water columns over continental shelves before the Great Oxidation Event. Nature Geoscience 12, 186-191 (2019).
Molybdenum isotope-based redox deviation driven by continental margin euxinia during the early Cambrian. Geochimica et Cosmochimica Acta 325, 152-169 (2022).
Trace elements at the intersection of marine biological and geochemical evolution. Earth-Science Reviews 163, 323-348 (2016).
A model for the oceanic mass balance of rhenium and implications for the extent of Proterozoic ocean anoxia. Geochimica et Cosmochimica Acta 227, 75-95 (2018).
Consective Fe redox cycles decrease bioreducible Fe(III) and Fe isotope fractionations by eliminating small clay particles. Geochimica et Cosmochimica Acta 308, 118-135 (2021).
Uranium and molybdenum isotope evidence for globally extensive marine euxinia on continental margins and in epicontinental seas during the Devonian-Carboniferous Hangenberg Crisis. Geochimica et Cosmochimica Acta 352, 133-156 (2023).