Flora Dome

Location

T3N, R6-7E, Clay County (H-7)

References

Lowenstam 1951

Description

Lowenstam (1951) defined the Flora Dome on the basis of subsurface mapping of the Herrin Coal Member (Pennsylvanian). His map shows an irregular dome that is about 1 mile (1.6 km) in diameter and has about 25 feet (8 m) of closure. The current Beech Creek ("Barlow") Limestone map of the area (ISGS open files) shows a dome that is 1.5 to 2 miles (2.4-3.2 km) across and has closure of about 30 feet (10 m). The Flora Dome lies along a northeast-trending structural terrace in an area of southeastward regional dip. The Sailor Springs Consolidated Oil Field lies along the same terrace. The Flora Dome is near the southwestern end of this field, which has yielded more than 68 million barrels of oil from Chesterian, Valmeyeran, and Devonian pay zones in combination structural and stratigraphic traps.