Re-Os geochronology for sulfides and organic-rich sediments.

ABSTRACT: Rhenium and osmium are both siderophilic and chalcophilic, exhibiting a strong affinity for organic-rich materials. This makes the Re-Os chronometer a valuable complement to geochronometers based on lithophile elements. In this review, we begin by discussing how the elemental abundances and isotopic compositions impact sample selection, analytical strategy, and data interpretation. We then provide an overview of how ¹⁸⁷Os/¹⁸⁸Os ratios can be used to trace geological processes, followed by a summary of the analytical protocols commonly used in Re-Os geochemistry. We also examine key challenges in isochron dating, including the identification and avoidance of pitfalls such as mixing lines, and inherited initial slopes. We further demonstrate that petrographic and geoche

SUBMITTER: Li Y 

PROVIDER: S-EPMC12416286 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature