Arkadelphia Marl
The Arkadelphia Marl is a geologic formation in Arkansas in Clark, Nevada, and Hempstead counties.[3][4] It preserves fossils dating back to the Cretaceous period.
| Arkadelphia Marl Stratigraphic range: Late Cretaceous | |
|---|---|
| Type | Formation |
| Underlies | Midway Group |
| Overlies | Nacatoch Formation |
| Thickness | 120 to 160 feet[1] |
| Location | |
| Region | Arkansas |
| Country | United States |
| Type section | |
| Named for | Arkadelphia, Clark County, Arkansas[2] |
| Named by | Robert Thomas Hill |
Paleofauna
References
- McFarland, John David (2004) [1998]. "Stratigraphic summary of Arkansas" (PDF). Arkansas Geological Commission Information Circular. 36: 31. Archived from the original (PDF) on 2016-12-21. Retrieved 2018-01-12.
- Hill, R.T. (1888). "The Neozoic geology of southwestern Arkansas". Arkansas Geological Survey Annual Report 1888. 2: 33, 39, 53–56, 72, 188.
- "ARKADELPHIA MARL/FORMATION". Archived from the original on 2016-08-19. Retrieved 2016-07-31.
- "Arkadelphia Marl (ARKad;0)".
- Becker, Martin A.; Chamberlain Jr, John A.; Wolf, George E. (2006). "Chondrichthyans from the Arkadelphia Formation (Upper Creataceous: Upper Maasstrichtian) of Hot Spring County, Arkansas". Journal of Paleontology. 80 (4): 700–716.
- 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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