Geochemistry of Albian to Santonian black shale sequences on the Demerara Rise, South American margin, supplement to: Meyers, Philip A; Bernasconi, Stefano M; Forster, Astrid (2006): Origins and accumulation of organic matter in expanded Albian to Santonian black shale sequences on the Demerara Rise, South American margin. Organic Geochemistry, 37(12), 1816-1830

Philip A Meyers, Stefano M Bernasconi & Astrid Forster
Ocean Drilling Program Leg 207 recovered thick sequences of Albian to Santonian organic-carbon-rich claystones at five drill-sites on the Demerara Rise in the western equatorial Atlantic Ocean. Dark-colored, finely laminated, Cenomanian-Santonian black shale sequences contain between 2% and 15% organic carbon and encompass Oceanic Anoxic Events 2 and 3. High Rock-Eval hydrogen indices signify that the bulk of the organic matter in these sequences is marine in origin. However, d13Corg values lie mostly between -30...
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