| El Mamey Formation | |
|---|---|
| Stratigraphic range: Burdigalian-Langhian | |
| Type | Formation | 
| Lithology | |
| Primary | Shale, sandstone, conglomerate | 
| Other | Dominican amber | 
| Location | |
| Coordinates | 19°30′N70°42′W / 19.5°N 70.7°W | 
| Approximate paleocoordinates | 19°18′N69°30′W / 19.3°N 69.5°W | 
| Country | Dominican Republic | 
The El Mamey Formation is a geologic formation in the Dominican Republic. The formation consists of shales and sandstones interspersed with a conglomerate of well-rounded pebbles, deposited in a fluvio-deltaic environment. El Mamey Formation is one of the formations containing Dominican amber and preserves fossils dating back to the Burdigalian to Langhian period. [1]