Wells and Borings (0)
| Engineering boring |
| Engineering boring to bedrock |
| Stratigraphic boring |
| Stratigraphic boring to bedrock |
| Water well |
| Water well to bedrock |
Cross Sections (1)
| Cross section line |
Geologic Contacts (2)
| Contact |
| Quadrangle boundary |
Geologic Units (3)
| Bedrock outcrop |
| Cahokia Formation |
| Disturbed ground |
| Equality Formation |
| Equality Formation - complex |
| Grayslake Peat |
| Henry Formation - Wasco |
| Henry Formation |
| Lemont Formation - Batestown Member |
| Lemont Formation - Haeger Member |
| Lemont Formation - Yorkville Member |
| Tiskilwa Formation |
| Water |
|