Origin of sulfate in post-snowball-Earth oceans: river inputs vs. shelf-derived H₂S.

ABSTRACT: A synthesis of global barite sulfate isotope data from approximately 635 million years ago, at the end of a global glaciation, undermines the hypothesis that river sulfate was the primary carrier of the distinctive 17O-depleted atmospheric O2 signature of the time. Instead, an aqueous H2S oxidation model on the shelf emerges as a compelling alternative, though it demands extensive validation across multiple fronts by the scientific community.

SUBMITTER: Bao H 

PROVIDER: S-EPMC11565228 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature