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] |
The Nacatoch Formation is a geologic formation in Arkansas, USA. [1] It preserves fossils dating back to the Cretaceous period.