Arroyo Penasco Group
| Arroyo Penasco Group | |
|---|---|
| Stratigraphic range: | |
Arroyo Penasco Group resting on Precambrian rock | |
| Type | Group |
| Sub-units | Espiritu Santo Formation, Tererro Formation |
| Underlies | Log Springs Formation |
| Overlies | Precambrian basement |
| Thickness | 95 m at type section |
| Lithology | |
| Primary | Limestone |
| Other | Sandstone |
| Location | |
| Coordinates | 35°38′26″N 106°51′10″W / 35.6406°N 106.8529°W |
| Region | New Mexico |
| Country | United States |
| Type section | |
| Named for | Arroyo Penasco (35°33′33″N 106°51′53″W / 35.5591955°N 106.8647114°W) |
| Named by | A.K. Armstrong (1955) |
Arroyo Penasco outcrop map | |
The Arroyo Penasco Group is a group of geological formations exposed in the Nacimiento, Jemez, Sandia, and Sangre de Cristo Mountains of northern New Mexico. It preserves fossils characteristic of the late Mississippian.