Organic carbon and total sulfur content and concentrations of selected molecular fossils for C/T black shales (Table 1), supplement to: Sinninghe Damsté, Jaap S; Köster, Jürgen (1998): A euxinic southern North Atlantic Ocean during the Cenomanian/Turonian oceanic anoxic event. Earth and Planetary Science Letters, 158(3-4), 165-173

Jaap S Sinninghe Damsté & Jürgen Köster
During mid-Cretaceous times large amounts of organic carbon (Corg) became sequestered in 'black shales', possibly due to 'oceanic anoxic events' characterized by the development of an extended oxygen minimum zone (OMZ). Here, we provide the first direct evidence for an open ocean OMZ in the Cenomanian/Turonian (C/T) southern North Atlantic and in fact show that the base of the photic zone was euxinic as revealed by molecular fossils from photosynthetic green sulfur bacteria in C/T...
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