Nacatoch Formation
The Nacatoch Formation is a geologic formation in Arkansas.[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] |
References
- McFarland, John David (2004) [1998]. "Stratigraphic summary of Arkansas" (PDF). Arkansas Geological Commission Information Circular. 36: 30–31. Archived from the original (PDF) on 2016-12-21. Retrieved 2018-01-12.
- Veatch, A.C. (1905). "Underground waters of eastern United States". U.S. Geological Survey Water-Supply Paper. 114: 183.
- Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Archived from the original on 31 July 2014. Retrieved 8 July 2014.
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