| Porvenir Formation | |
|---|---|
| Stratigraphic range: | |
 Porvenir Formation at its type section at Canovas Canyon. | |
| Type | Formation |
| Underlies | Alamitos Formation |
| Overlies | Sandia Formation |
| Thickness | 700–1,615 ft (213–492 m) |
| Lithology | |
| Primary | Limestone |
| Other | Sandstone, shale |
| Location | |
| Coordinates | 35°42′14″N 105°24′18″W / 35.704°N 105.405°W |
| Region | New Mexico |
| Country | United States |
| Type section | |
| Named for | El Porvenir Campground |
| Named by | Baltz and Myers |
| Year defined | 1984 |
  Porvenir Formation (the United States)  Porvenir Formation (New Mexico) | |
The Porvenir Formation is a geologic formation exposed in the southeastern Sangre de Cristo Mountains of New Mexico. It preserves fossils dating back to the middle Pennsylvanian period.[1]
- ^ Baltz, E.H.; Myers, D.H. (1984). "Porvenir Formation (new name); and other revisions of nomenclature of Mississippian, Pennsylvanian, and Lower Permian rocks, southeastern Sangre de Cristo Mountains, New Mexico" (PDF). Contributions to Stratigraphy: U.S. Geological Survey Bulletin. 1537-B: B1–B39. doi:10.3133/b1537B.