Cordes Anticline (New)

Location

Eastern T3S, R3W, Washington County (I-5)

References

Treworgy 1981

Description

The Cordes structure, listed as a "significant unnamed structure" by Treworgy (1981), is one of the most prominent anticlines on the eastern Sparta Shelf. It is named the Cordes Anticline after the Cordes Oil Field, which is developed in a structural trap on the anticline. It is defined best on structure maps of the Beech Creek ("Barlow") Limestone (ISGS open files). On this horizon, the fold trends almost north to south and is about 4 miles (6.5 km) long by 2 miles (3 km) wide. Closure on the Beech Creek is about 70 feet (21 m). The Cordes Anticline is nearly in line with the Pinckneyville Anticline to the south.