High-resolution carbon isotope records of the Toarcian Oceanic Anoxic Event (Early Jurassic) from North America and implications for the global drivers of the Toarcian carbon cycle
Analyzed δ13Corg values from two North American sites across the Toarcian Oceanic Anoxic Event. Highest-resolution study of Toarcian carbon isotope excursions from outside of Europe. Documented small-scale carbon isotope excursions during onset of Toarcian carbon isotope excursion. Small-scale carbon isotope excursions during Toarcian were global phenomena. Increased terrestrial methanogenesis implicated in global warming and carbon isotope excursions.