2026 GCAGS Journal, Vol. 15
TITLE
Subsurface Stratigraphy and Carbon Sequestration Potential of Eastern Baldwin County, Alabama
AUTHOR(S)
David T. King, Jr., Ashraf Uddin, and Larrez Green
ABSTRACT
Subsurface stratigraphy of eastern Baldwin County, Alabama, particularly the Upper Cretaceous section, exhibits a geologic framework favorable for carbon sequestration and is characterized by three critical attributes: a regionally extensive Upper Cretaceous chalk succession that provides an effective confining seal; a thick package of clastic formations with reservoir-quality properties (18-30% porosity, 100-1500 mD permeability); and relatively shallow burial depths that enhance both accessibility and the potential for injectivity. Stratigraphic correlation of the Tuscaloosa Group and Eutaw Formation in the study area delineates two laterally continuous sequestration intervals bounded by confining units, herein designated the Alpha and Beta zones, separated by a middle confining unit. The Alpha and Beta zones are approximately 150 m (500 ft) and 90 m (300 ft) thick, respectively, with the intervening confining unit measuring about 150 m (500 ft). This vertically stacked system of reservoirs and seals provides multiple opportunities for long-term CO₂ storage within a single stratigraphic succession. The continuity, thickness, and reservoir quality of these intervals highlight eastern Baldwin County as a promising and regionally significant candidate for carbon storage, with implications for advancing carbon management strategies along the U.S. Gulf Coast.
PAGE(S)
TBA
DOI
https://doi.org/10.62371/WKRI3912
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