General Geology

Denver Basin in Colorado

Idealized Stratigraphic Cross Section of the Southern Denver Basin modifed from Raynolds (1987)

This diagram shows an idealized cross section (modifed from Raynolds (1987)) of the statigraphy of the Denver – Julesburg Basin. The diagram highlights water aquifers and oil and gas reservoirs as far down as the Cretaceous Age Dakota Group and how basement rock movements provide for favorable vertical localized fracturing that can compliment widespread small scale fracturing caused by a regional stress field applied during mountain building periods to the Niobrara Shale (deposited in an Cretaceous Age interior seaway) allowing for enhanced oil recovery via horizontal drilling methods and hydrofracing technologies.

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