St. James Dome (New Name)

Old Name: St. James Anticline

Location

Mainly in T6N, R3E, Fayette County (H-6)

References

Newton 1941, Stevenson 1964

Description

This is the only structure that was named by Newton and confirmed by another geologist. Newton mapped a small north-trending closure on the "upper Bogota" limestone (see EAST LOUDEN ANTICLINE). Stevenson confirmed that a similar structure exists on the Carper sand, a lenticular oil producing sandstone within the Borden Siltstone (Mississippian). The structure is a slightly elongated north-south dome on the Carper. It is about 3 miles (4.5 km) long and 2 miles (3 km) wide, and shows about 40 feet (12 m) of closure. The dome lies along the axis of the south-plunging anticline that extends south of the enclosed part of the Louden Anticline. About 22 million barrels of oil have been recovered from the Cypress Sandstone (Mississippian) and Carper sand in the St. James Oil Field. Newton's name for the structure, St. James Anticline, should be revised to St. James Dome.