La Portada Formation
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| La Portada Formation | |
|---|---|
| Stratigraphic range: Miocene–Pliocene | |
| File:Monumento Nacional La Portada, Antofagasta-Chile.JPG View of La Portada, the namesake arch made of La Portada Formation rocks resting on darker rocks of Jurassic La Negra Formation | |
| Type | Geological formation |
| Sub-units | Cerro Bandurrias & Cuesta del Burro Members |
| Underlies | Mejillones Formation |
| Overlies | Caleta Herradura Formation |
| Lithology | |
| Primary | Sandstone |
| Location | |
| Coordinates | Lua error in Module:Coordinates at line 489: attempt to index field 'wikibase' (a nil value). |
| Approximate paleocoordinates | Lua error: callParserFunction: function "#coordinates" was not found. |
| Region | Antofagasta Region |
| Country | Chile |
| Type section | |
| Named for | La Portada de Antofagasta |
La Portada Formation (Chile) | |
La Portada Formation (Spanish: Formación La Portada) is a geologic formation of Miocene and Pliocene age located near the Coast Range of northern Chile. The coarse-grained sandstones of the formation contain penguin fossils.[1][2]
See also
[edit | edit source]References
[edit | edit source]- ^ Mejillones Peninsula at Fossilworks.org
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
Further reading
[edit | edit source]- L. Ragaini, C. di Celma, and G. Cantalamessa. 2008. Warm-water mollusc assemblages from northern Chile (Mejillones Peninsula): new evidence for permanent El Nino-like conditions during Pliocene warmth?. Journal of the Geological Society 165:1075-1084
