Nature Communications (Apr 2018)
Fossil black smoker yields oxygen isotopic composition of Neoproterozoic seawater
Abstract
Uncertainty regarding the evolution of the oxygen isotopic composition of seawater casts doubt on past temperature reconstructions. Here, the authors present a new, precise δ18O value for the Neoproterozoic, and propose that ocean temperatures on the eve of the Sturtian glaciation were 15–30 °C warmer than present.