Castle Hayne Limestone
| Castle Hayne Limestone | |
|---|---|
| Stratigraphic range: Lutetian/early Bartonian, | |
| Type | Formation |
| Unit of | Jackson Group |
| Sub-units | New Hanover Member, Comfort Member, Spring Garden Member |
| Lithology | |
| Primary | limestone |
| Other | marl |
| Location | |
| Region | North Carolina |
| Country | United States |
| Type section | |
| Named for | Castle Hayne, North Carolina |
The Castle Hayne Limestone (also called the Castle Hayne Formation) is a middle Eocene-aged geologic formation in North Carolina, USA. It consists of cobble to pebble sized clasts, usually rounded, coated with phosphate and glauconite in a limestone matrix. The formation has been dated to the middle Eocene, but its exact age remains uncertain; however, it is generally thought to date to the Lutetian or early Bartonian.