Gridley Dome
From ILSTRUC
Part of the La Salle Anticlinorium
Location
T26N, R3E, McLean County (D-6)
References
Clegg 1972
Description
Gridley Dome lies just to the northeast and can be regarded as an offshoot of the Lake Bloomington Dome, which in turn is part of the Downs Anticline. As mapped on the Danville Coal Member, Gridley Dome is circular and about 2 miles (3 km) across. It has closure of about 50 feet (15 m). No detailed map is available for a deeper horizon.
