The New Albany shale in Illinois: emerging play or prolific source

Devonian New Albany shale outcrops in the streambed on the flank of Hicks Dome, an igneous intrusion that is the center of the highest measured thermal maturity in the New Albany in the Illinois basin. The outcrop is in Hardin County, Ill. A sample from this shale in the streambed contained total organic carbon of 6.20% and TMAX of 450° C. in the Grassy Creek member of the New Albany shale. Orthogonal joint sets in brittle black shale are apparent in this photo by Joan Crockett, Illinois State Geological Survey.The New Albany shale (Upper Devonian) in the Illinois basin is the primary hydrocarbon source rock for the basin's nearly 4 billion bbl of oil production to date, and for an un...

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