Chañaral Epimetamorphic Complex
| Chañaral Epimetamorphic Complex | |
|---|---|
| Type | Complex |
| Underlies | Cifuncho Formation Pan de Azúcar Formation |
| Lithology | |
| Primary | Metasediments including metaturbidite |
| Location | |
| Region | Atacama Region |
| Country | Chile |
| Type section | |
| Named for | Chañaral |
The Chañaral Epimetamorphic Complex or Las Tórtolas Formation[1] is an accretionary complex composed of metamorphic rocks located in western Atacama Region, Chile. The rocks of the complex are mainly mica-schist, greenschist and metasediment of low-grade. The deposition of the sedimentary protoliths occurred in the Carboniferous and Permian being later metamorphosed. Among the protoliths of the complex are turbidites and other sediments.[2] Chañaral Epimetamorphic Complex is thought to represent the shallow and frontal part of an accretionary prism while the nearby Punta de Choros Metamorphic Complex represents the deeper basal part of the very same accretionary prism.[2]
References
- ^ Fuentes, Paulina; Fernández, Carlos; Díaz-Alvarado, Juan; Díaz-Azpiroz, Manuel (2019). "Using 3D kinematic models in subduction channels. The case of the Chañaral tectonic mélange, Coastal Cordillera, northern Chile". Gondwana Research. 74: 251–270.
- ^ a b Creixell, C.; Oliveros, V.; Vásquez, P.; Navarro, J.; Vallejos, D.; Valin, X.; Godoy, E.; Ducea, M.N. (2016). "Geodynamics of Late Carboniferous–Early Permian forearc in north Chile (28°30′–29°30′S)". Journal of the Geological Society. 173 (5): 757–772. doi:10.1144/jgs2016-010. S2CID 130149182.