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This article relies largely or entirely on a single source. Relevant discussion may be found on the talk page. Please help improve this article by introducing citations to additional sources. Find sources: "Choapa Metamorphic Complex" – news · newspapers · books · scholar · JSTOR (August 2016)

The Choapa Metamorphic Complex or ChMC is a large coherent but varied group of metamorphic rocks –in other words a geologic complex– that crops out in the Chilean Coast Range in northern Chile. The rocks of the formation have been metamorphosed under greenschist facies metamorphism. After the main phase of metamorphism the rocks of the complex were heated by plutons in the Jurassic. It has been suggested that the protoliths of the formation were similar and equivalent to the Paleozoic-aged Puerto Manso Formation.

The complex is named after Choapa River.

References

1. Hervé, F.; Faundez, V.; Calderón, M.; Massonne, H.-J.; Willner, A.P. (2007). "Metamorphic and plutonic basement complexes". In Moreno, Teresa; Gibbons, Wes (eds.). The Geology of Chile. Geological Society of London. pp. 7–20.

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