Caimito Formation
| Caimito Formation | |
|---|---|
| Stratigraphic range: Late Oligocene-Early Miocene | |
| Type | Formation |
| Underlies | Alajuela & Gatún Formations |
| Overlies | Bohío, Caraba & Gatuncillo Formations, Cretaceous basement |
| Lithology | |
| Primary | Marl |
| Other | Siltstone, sandstone, conglomerate |
| Location | |
| Coordinates | 9°12′N 79°48′W / 9.2°N 79.8°W |
| Approximate paleocoordinates | 7°42′N 77°30′W / 7.7°N 77.5°W |
| Region | Panamá Province |
| Country | Panama |
| Extent | Panama Basin |
| Type section | |
| Named for | Caimito Junction of Panama Railroad |
| Named by | MacDonald |
| Year defined | 1913 |
The Caimito Formation (Tcm) is a geologic formation in Panama. The marls, sandstones and conglomerates preserve bivalve and gastropod fossils dating back to the Late Oligocene to Early Miocene period. The name Caimito was proposed by MacDonald in 1913, named after the Caimito junction in the Panama Railroad during the construction of the Panama Canal.