| La Joya Formation | |
| Type: | Geologic formation |
| Period: | Late Jurassic |
| Age: | Mid-Late Jurassic ~ |
| Prilithology: | Marine sediments |
| Region: | Sierra Madre Oriental, Tamaulipas |
| Country: | Mexico |
| Underlies: | Indidura Formation |
| Overlies: | La Boca Formation, Huizachal Formation |
The La Joya Formation is a Jurassic period geologic formation in north central Mexico.[1] It is located in the Sierra Madre Oriental range, in southwestern Tamaulipas state.[2] [3]
It preserves fossils dating back to the Jurassic period.[4]