Aquia Formation
| Aquia Formation | |
|---|---|
| Stratigraphic range: Late Paleocene ~ | |
Boulder of Aquia Formation along Chester River. Contains casts of large mollusks. (c. 1917) | |
| Type | Geological formation |
| Unit of | Pamunkey Group |
| Sub-units | Paspotansa & Piscataway Members |
| Underlies | Nanjemoy Formation |
| Overlies | Brightseat Formation |
| Thickness | up to 100 feet (30 m) |
| Lithology | |
| Primary | Sandstone |
| Location | |
| Location | Hopewell, Virginia |
| Coordinates | 38°18′N 77°18′W / 38.3°N 77.3°W |
| Approximate paleocoordinates | 39°00′N 58°54′W / 39.0°N 58.9°W |
| Region | Maryland, New Jersey, Virginia |
| Country | United States |
| Extent | Upper Chesapeake Bay-James River |
| Type section | |
| Named for | Aquia Creek |
The Aquia Formation is a geologic sandstone formation that extends from the upper Chesapeake Bay to the James River near Hopewell, Virginia. It consists of clayey, silty, very shelly, glauconitic sand. Fossil records indicate that this stratigraphic unit was created during the Paleocene.
The Aquia formation was named for Aquia Creek where it is exposed in cliff faces along the banks.