Unknown
PANGAEA
In:
Supplement to: Turchyn, Alexandra V; Schrag, Daniel P (2004): Oxygen isotope constraints on the sulfur cycle over the past 10 million years. Science, 303(5666), 2004-2007, https://doi.org/10.1126/science.1092296
Publication Date:
2023-12-11
Description:
Oxygen isotopes in marine sulfate (d18O SO4) measured in marine barite show variability over the past 10 million years, including a 5per mil decrease during the Plio-Pleistocene, with near-constant values during the Miocene that are slightly enriched over the modern ocean. A numerical model suggests that sea level fluctuations during Plio-Pleistocene glacial cycles affected the sulfur cycle by reducing the area of continental shelves and increasing the oxidative weathering of pyrite. The data also require that sulfate concentrations were 10 to 20% lower in the late Miocene than today.
Keywords:
85-571; 85-572A; 85-573; 85-573A; 85-574; 85-574A; 85-575; 85-575C; AGE; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Event label; Glomar Challenger; Leg85; North Pacific; North Pacific/FLANK; North Pacific/TROUGH; Sample code/label; Sample code/label 2; δ18O, barite
Type:
Dataset
Format:
text/tab-separated-values, 477 data points
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