Ina Dome
From ILSTRUC
Location
T4S, R2 and 3E, Jefferson County (I-6)
References
Cady et al. 1938, Keys and Nelson 1980
Description
As shown on the Herrin Coal Member structure map of Cady et al. (1938), the Ina Dome is a small dumbbell-shaped closure in Sections 23, 24, 25, and 26. Structural relief is indicated to be roughly 25 feet (8 m). Using many more control points, Keys and Nelson (1980) remapped the Herrin Coal in the same area and confirmed the presence of an enclosed high larger than the one shown by Cady et al. Maps of the Beech Creek ("Barlow") Limestone (ISGS open files) show a southeast plunging nose with no closure. Valmeyeran Series elastic and carbonate units in the Ina Oil Field have produced 759,000 barrels of oil since 1938.
