Seven Rivers Formation
The Seven Rivers Formation is a geologic formation in southeastern New Mexico and west Texas. It preserves fossils dating back to the late Guadalupian Epoch of the Permian period.
| Seven Rivers Formation | |
|---|---|
| Stratigraphic range: | |
Cliff of Seven Rivers Formation | |
| Type | Formation |
| Unit of | Artesia Group |
| Underlies | Yates Formation |
| Overlies | Queen Formation |
| Thickness | 400–1,970 feet (120–600 m) |
| Lithology | |
| Primary | Anhydrite |
| Other | Shale, siltstone, dolomite (rock), sandstone |
| Location | |
| Coordinates | 32.497°N 104.256°W |
| Region | New Mexico |
| Country | U.S. |
Seven Rivers Formation (the United States) Seven Rivers Formation (New Mexico) | |
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