2019
DOI: 10.1029/2019gl083316
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Redox Chemistry and Molybdenum Burial in a Mesoproterozoic Lake

Abstract: While marine sediments have been used to constrain a history of redox chemistry throughout the Precambrian, far fewer data have been generated from lakes. With major biological innovations thought to have occurred in Proterozoic lakes, understanding their chemistry is critical for understanding the evolution of eukaryotic life. We use sediment geochemistry to characterize the redox conditions of the Nonesuch Formation (~1.1 Ga) and a modern analogue for the Proterozoic: the Middle Island Sinkhole in Lake Huron… Show more

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Cited by 16 publications
(14 citation statements)
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“…Additionally, Mn‐oxyhydroxides can also be transported through reducing waters to the sediment–water interface via a “particulate shuttle” (Algeo & Tribovillard, 2009). Such a mechanism in MIS and LH is corroborated by Mo vs. U covariation in these sediments (Rico et al, 2019). However, few correlations between metals and Mn in MIS sediments, and no correlations between metals and Mn in the MIS mat, indicate that Mn‐oxyhydroxide deposition is not a key trace metal transport in these systems (Table S1).…”
Section: Resultsmentioning
confidence: 61%
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“…Additionally, Mn‐oxyhydroxides can also be transported through reducing waters to the sediment–water interface via a “particulate shuttle” (Algeo & Tribovillard, 2009). Such a mechanism in MIS and LH is corroborated by Mo vs. U covariation in these sediments (Rico et al, 2019). However, few correlations between metals and Mn in MIS sediments, and no correlations between metals and Mn in the MIS mat, indicate that Mn‐oxyhydroxide deposition is not a key trace metal transport in these systems (Table S1).…”
Section: Resultsmentioning
confidence: 61%
“…Macronutrient and Fe data from Rico and Sheldon (2019). Mo and U data from Rico et al (2019). Relative abundances are from Kinsman‐Costello et al (2017)…”
Section: Resultsmentioning
confidence: 99%
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