Marissa Dome

From ILSTRUC

Location

Southwestern, T3S, R6W, St. Clair County (1-4)

References

Bell 1929a, Cady et al. 1940, Bristol 1974

Description

The Marissa Dome was originally defined as a small area of closure mapped from subsurface data on the Herrin Coal Member. Mapping of the Beech Creek ("Barlow") Limestone (ISGS open files) indicates an irregular high that is elongated from north to south and has closure of about 40 feet (13 m).