Eagle Ford Group
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The Eagle Ford Group is a sedimentary rock formation deposited during the Cenomanian and Turonian ages of the Late Cretaceous over much of the modern-day state of Texas. The Eagle Ford is predominantl
Outcrop of the Eagle Ford and Austin Chalk Contact off Kiest Blvd, 1/2 mile east of Patriot Pky in Dallas County
Schematic E-W section showing the Eagle Ford Shale among the geological strata beneath the DFW Metroplex
This cross-section illustrates how the reactivation of the Sabine Uplift in the East developed the Woodbine/Eagle Ford Unconformity that is present in the subsurface of Far East Texas
Boquillas Formation
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The Boquillas Formation is a geologic formation deposited during the Late Cretaceous in modern-day West Texas. It is typically composed of alternating marls and limestones with thin volcanic ash beds.
Eagle Ford Group
…marine transgression), allowing for the deposition of Lower Eagle Ford organic-rich marls in South Texas and limestones of the Terrell Member of the Boquillas Formation in West Texas starting at about 96 million years ago. The rise in sea level eventually drowned the East Texas Woodbine river deltas, initiating Eagle…
Limestone of the Boquillas Formation in Big Bend National Park