title: Earth Sciences: signature required.
authors.forename: L Paul
authors.initials: LP
authors.lastname: Knauth
mesh_terms: D001272:Atmosphere / Q000737:chemistry*; D018534:Earth, Planet; D019015:Geologic Sediments / Q000737:chemistry; D010100:Oxygen / Q000032:analysis* / Q000378:metabolism; D013455:Sulfur / Q000032:analysis; D013460:Sulfur Isotopes; D013997:Time Factors
chemical_list: D013460:Sulfur Isotopes; D013455:Sulfur; D010100:Oxygen