ALAGO Webinars - Isotope Geochemistry with John Eiler

5th Webinar Isotope Geochemistry "Lessons from stable isotopes regarding the origin and chemical evolution of geological hydrocarbons" Speaker: John Eiler (Caltech) Mediator: Alexandre Ferreira (Petrobras) Geological hydrocarbons are generally understood to form by irreversible thermal breakdown of buried sedimentary organic matter, but might instead form abiotically or participate in metastable equilibria of radical reaction networks. This webinar brings insights into these questions arising from the study of the intramolecular isotopic structures and intermolecular isotopic partitioning in components of natural gases and condensates and the refractory residues of buried organic matter. The findings of this field indicate that the chemistry of petroleum systems initiates by irreversible ‘cracking’ chemistry but becomes dominated by metastable equilibrium as systems reach thermal maturities corresponding to the ‘dry gas window’. More general implications of these findings for the formation and evolution of geological hydrocarbons, and future extension of such studies to larger organic molecules will be discussed. ALAGO Official Website: https://alago.org/alago/ Affiliation: https://alago.org/alago/affiliation/ ALAGO Webinars - Analytical Geochemistry: https://www.even3.com.br/analyticalge... Follow us: https://linktr.ee/alago.geochemistry