Ontology highlight
ABSTRACT:
SUBMITTER: Yierpan A
PROVIDER: S-EPMC7531878 | biostudies-literature | 2020 Sep
REPOSITORIES: biostudies-literature
Science advances 20200923 39
Oxygenation of Earth's oceans and atmosphere through time has consequences for subducted surface signatures that are now stored in the mantle. Here, we report significant mass-dependent selenium isotope variations in modern hot spot-influenced oceanic lavas. These variations are correlated with tracers of mantle source enrichment, which can only be explained by incorporation of abyssal pelagic sediments subducted from a redox-stratified mid-Proterozoic ocean. Selenium geochemical signatures of t ...[more]