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Chiloé Block

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Title: Chiloé Block  
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Subject: Geology of Argentina, Geology of Chile, Terranes, Pampia, Andes
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Chiloé Block

Geology of the Andes
The Andes
Orogenies
Pampean orogeny
Famatinian orogeny
Gondwanide orogeny
Andean orogeny
Fold-thrust belts

Central Andean Patagonian

Batholiths
Peruvian Coastal | North Patagonian | South Patagonian
Subducted structures

Antarctic Plate Carnegie Ridge Chile Rise Farallon Plate (formerly) Juan Fernández Ridge Nazca Plate Nazca Ridge

Faults

Gastre Liquiñe-Ofqui Magallanes-Fagnano

Andean Volcanic Belt

Northern Zone Peruvian flat-slab Central Zone Pampean flat-slab Southern Zone Patagonian Gap Austral Zone

Paleogeographic terminology

Arequipa-Antofalla Terrane Chilenia Chiloé Block Cuyania Iapetus Ocean Madre de Dios Terrane Mejillonia Pampia

The Chiloé Block or Chiloé Terrane is a geotectonic unit making up the basement of large parts of south-central Chile between 41° and 45°S. Due to its form it is sometimes called Chiloé Sliver. The Chiloé Block is believed to be an ancient microcontinent or terrane that collided with the South American Plate during the Proterozoic. The Chiloé Sliver is however badly sutured to South America as the Liquiñe-Ofqui Fault runs through its eastern boundary.


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