Matches in DBpedia 2016-04 for { ?s ?p "The disappearance of distinctive non-mass-dependent sulphur isotope fractionations in sedimentary rocks deposited after about 2.4–2.3 Gyr ago16 . Almost all fractionations among isotopes of a given element scale to differences in their masses; NMD fractionations deviate from this typical behaviour. The remarkable NMD signals are tied to photochemical reactions at short wavelengths involving gaseous sulphur compounds released from volcanoes into the atmosphere." }
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- nature13068 quote "The disappearance of distinctive non-mass-dependent sulphur isotope fractionations in sedimentary rocks deposited after about 2.4–2.3 Gyr ago16 . Almost all fractionations among isotopes of a given element scale to differences in their masses; NMD fractionations deviate from this typical behaviour. The remarkable NMD signals are tied to photochemical reactions at short wavelengths involving gaseous sulphur compounds released from volcanoes into the atmosphere.".