Figure 3
From: The driving mechanisms of the carbon cycle perturbations in the late Pliensbachian (Early Jurassic)

Global correlation of the carbon isotopic record of the late Pliensbachian. (A) Organic carbon isotope curve of21 for the Margaritatus and Spinatum Zones only; (B) Organic carbon isotope curve from Nicely, Suplee Formations, Oregon, USA, this study. The curve is the result of a moving average spline-fitting model; (C) Organic carbon data of the late Pliensbachian from the Staithes section, UK8; (D) Organic carbon isotope curve from the Robin Hood’s Bay, UK3; (E) Carbonate carbon isotope curve of the late Pliensbachian from the Peniche section, Portugal4.