Fig. 3: Secular trends in CAP values during the Lomagundi and Wooly Dolomite δ13C excursions.
From: Marine phosphorus and atmospheric oxygen were coupled during the Great Oxidation Event
δ13C and CAP data for carbonate successions capturing the Lomagundi excursion at ca. 2100 million years ago from a the FC Formation, Gabon and b the Nash Fork Formation, Wyoming and c the Wooly Dolomite excursion, at ca. 2030 million years ago, from the Wooly Dolomite, Western Australia. Note that the high δ13Ccarb values are generally accompanied by the high CAP values. Dark-grey lines represent locally weighted scatter plot smoothing. Error bars reflect the cumulative analytical error uncertainty of 10%. Light-grey boxes define carbonate carbon isotope excursions.
