Nacatoch Formation
Geological formation in Arkansas
From Wikipedia, the free encyclopedia
The Nacatoch Formation is a geologic formation in Arkansas, USA.[1] It preserves fossils dating back to the Cretaceous period.
| Nacatoch Formation | |
|---|---|
| Stratigraphic range: Late Cretaceous | |
| Type | Formation |
| Underlies | Arkadelphia Marl |
| Overlies | Saratoga Formation |
| Thickness | 150 to 400 feet[1] |
| Location | |
| Region | Arkansas |
| Country | United States |
| Type section | |
| Named for | Nacatoch Bluff on the Little Missouri River, Clark County, Arkansas |
| Named by | Albert Homer Purdue[2] |
