Ancud Volcanic Complex

Ancud Volcanic Complex (Spanish: Complejo Volcánico de Ancud) is a volcanic complex of Oligocene and Miocene age located around Ancud with exposures in Chiloé Island, the Chilean mainland and smaller islets. Three subunits are recognized in the complex: Hueihuen, Teguaco and Cocotue.^[1] The complex is part of the mid-Tertiary coastal magmatic belt in south-central Chile.^[2]

Ancud Volcanic Complex
Stratigraphic range: Oligocene–Miocene
Type	Geological complex
Sub-units	Heuihuen, Teguaco, Cocotue
Underlies	Quaternary and Neogene deposits including Lacui Formation
Overlies	Caleta Chonos Formation
Lithology
Primary	Basaltic andesite
Other	Dacite
Location
Coordinates	41.9°S 73.8°W / -41.9; -73.8
Region	Los Lagos Region
Country	Chile
Extent	Chiloé Archipelago
Type section
Named for	Ancud
Ancud Volcanic Complex (Chile)

See also

• Geology portal

• Parga Formation
• Santo Domingo Formation