| Zapata Formation | |
| Type: | Geological formation |
| Period: | Hauterivian |
| Age: | Berriasian-Hauterivian |
| Prilithology: | Shale |
| Otherlithology: | Turbiditic sandstone, pyrite |
| Namedfor: | Cerro Zapata |
| Region: | Magallanes y la Antártica Chilena & Aysén Regions Santa Cruz Province |
| Country: | |
| Coordinates: | -51.1°N -73.3°W |
| Paleocoordinates: | -51.3°N -36.9°W |
| Underlies: | Punta Barrosa & Erezcano Formations |
| Overlies: | Tobífera & Springhill Formations |
| Extent: | Magallanes or Austral Basin |
Zapata Formation (Spanish; Castilian: Formación Zapata) is a sedimentary formation of Lower Cretaceous age in the Magallanes or Austral Basin of Argentina and Chile. Much of the formation is folded and faulted as consequence of the Andean orogeny.[1] In outcrops of the Zapata Formation near Torres del Paine, the ichthyosaur genus Myobradypterygius has been found.[2] [3]