Chonos Metamorphic Complex
The Chonos Metamorphic Complex is an accretionary complex composed of metamorphic rocks located in western Aysén Region, Chile. The deposition of the sedimentary protoliths occurred in the Triassic and they were later metamorphosed in the Jurassic. The formation has been subdivided into a highly deformed Western belt and an Eastern belt where sedimentary structures are preserved.[1]
| Chonos Metamorphic Complex Stratigraphic range: Jurassic | |
|---|---|
| Type | Complex |
| Sub-units | Potranca Formation |
| Underlies | Traiguén Formation |
| Lithology | |
| Primary | Metasediments including metaturbidite |
| Location | |
| Region | Aysén Region |
| Country |  |
| Type section | |
| Named for | Chonos Archipelago |
Fossils of Late Triassic bivalve species Monotis (Pacimonotis) aff. subcircularis and Lima sp. has been found in Chonos Metamorphic Complex, the first one in the Potranca Formation.[1][2]
References
- Hervé, Francisco; Fanning, C. Mark (2001). "Late Triassic detrital zircons in meta-turbidites of the Chonos Metamorphic Complex, southern Chile". Revista geológica de Chile. 28 (1). Retrieved 23 August 2016.
- Fang, Zong-jie; Boucot, Arthur; Covacevich, Vladimir; Hervé, Francisco (1998). "Discovery of Late Triassic fossils in the Chonos Metamorphic Complex, Southern Chile". Revista geológica de Chile. 25 (2). Retrieved 23 August 2016.
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