Malleco Formation
| Malleco Formation Stratigraphic range: Pliocene–Lower Pleistocene | |
|---|---|
| Underlies | Quaternary Andean volcanoes |
| Overlies |
Vizcacha-Cumilao Complex Cura-Mallín Formation Estratos de Huichahue Melipeuco Plutonic Group |
| Lithology | |
| Primary | Volcaniclastic rocks, lava |
| Location | |
| Region | Araucanía Region |
| Country | Chile |
| Type section | |
| Named for | Malleco River |
| Named by | Manuel Suárez and Carlos Emparan (1997) |
Malleco Formation (Spanish: Formación Malleco) is a geological formation of volcanic origin in the Andes of Araucanía Region (38–39° S), Chile. The formation is made up by volcaniclastic rocks, including tuffs, lahars and lavas of Pliocene–Lower Pleistocene age.[1] It is considered equivalent to the Cola de Zorro Formation found further north in Chile and the so-called "Asociación volcánica de la precordillera oriental" located around the upper courses Bío Bío and Aluminé rivers.[1][2]
References
- 1 2 Suárez, M. and Emparan, C. (1997). Hoja Curacautín, Carta geológica de Chile.
- ↑ Lara, Luis; Rodríguez, Carolina; Moreno, Hugo; Pérez de Arce, Carlos (July 2001). "Geocronología K-Ar y geoquímica del volcanismo plioceno superior-pleistoceno de los Andes del sur (39-42°S)". Revista geológica de Chile (in Spanish). Santiago: SciELO. 28 (1). doi:10.4067/S0716-02082001000100004. ISSN 0716-0208. Retrieved 24 September 2015.
| Terranes |  | |
|---|---|---|
| Sedimentary formations and groups | ||
| Batholiths | ||
| Metamorphic complexes |
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| Faults | ||
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