Citronelle
Dome: A Giant
Pashin, Jack1,
Richard Esposito2 (1) Geological Survey of
Citronelle Dome is a giant salt-cored
anticline in the eastern Mississippi Interior Salt Basin of Alabama and is near
a major coal-fired power plant serving the greater
Structural contour maps demonstrate that
the area of the structural closure increases upward in section. Saline
reservoirs of Upper Cretaceous age may provide more than a century of CO2
capacity. Sandstone units providing prospective carbon sinks include the Massive
and Pilot sands of the lower Tuscaloosa Group and several sandstone units in
the upper Tuscaloosa Group and Eutaw Formation. These sandstone units are
characterized by high porosity and permeability and low heterogeneity. The
Tuscaloosa-Eutaw interval is capped by up to 2,000 feet of marine shale and
chalk that are proven reservoir seals in nearby oil fields. Therefore,
Citronelle dome can be considered as a major sink where CO2 can be
stored safely while realizing the economic benefits associated with EOR.
AAPG Search and Discover Article #90063©2007 AAPG Annual Convention, Long Beach, California