La Portada Formation
La Portada Formation Stratigraphic range: Miocene–Pliocene | |
---|---|
Type | Geological formation |
Sub-units | Cerro Bandurrias & Cuesta del Burro Members |
Underlies | |
Overlies | Caleta Herradura Formation |
Lithology | |
Primary | Sandstone |
Location | |
Coordinates | 23°24′S 70°30′W / 23.4°S 70.5°WCoordinates: 23°24′S 70°30′W / 23.4°S 70.5°W |
Approximate paleocoordinates | 23°36′S 69°30′W / 23.6°S 69.5°W |
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[]
References[]
- ^ Mejillones Peninsula at Fossilworks.org
- ^ Chávez, Martín F. (2008). "Los pingüinos fósiles de Sudamérica". Libro de Actas. I Simposio - Paleontología Chile - 2008 (in Spanish). pp. 116–120.
Further reading[]
- 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
Categories:
- Geologic formations of Chile
- Geology of the Chilean Coast Range
- Miocene Series of South America
- Pliocene Series of South America
- Neogene Chile
- Sandstone formations
- Geology of Antofagasta Region