The Osmium Isotope Signature of Phanerozoic Large Igneous Provinces

The emplacement of Large Igneous Provinces (LIPs) throughout the Phanerozoic Eon introduced vast quantities mafic rocks to Earth's surface, which were subsequently weathered into oceans. Osmium isotope data can be used track these LIP-related weathering fluxes, providing a global fingerprint timing and magnitude LIP emplacement, guiding assessments impact events on ocean biogeochemistry regulation climate system. Sedimentary Os records spanning late are reviewed herein new observations from Eocene hyperthermal event ETM-2 presented. While stratigraphy provide major constraints activity in geological record, it cannot always distinguish whether extrusive was subaerial or submarine. utility osmium isotopes as tracer past volcanism may enhanced when alongside proxies such mercury concentrations, more diagnostic style individual episodes emplacement. Hitherto, only few high-resolution Os-isotope across LIPs have effectively exploited short oceanic residence time Os. Future studies suitable, well-preserved stratigraphic will significantly improve our understanding nature, progression, consequences