Sturgeon Lake Caldera

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Sturgeon Lake Caldera
Highest point
Elevation	approx. 455 m (1,493 ft)
Listing	List of volcanoes in Canada
Coordinates	49°52′13″N 91°00′10″W / 49.87028°N 91.00278°W / 49.87028; -91.00278
Geography
Location	Ontario, Canada
Geology
Rock age	Neoarchean
Mountain type	Caldera
Volcanic arc/belt	Wabigoon greenstone belt
Last eruption	Neoarchean

Sturgeon Lake Caldera is a large extinct caldera complex in Kenora District of Northwestern Ontario, Canada. It is one of the world's best preserved mineralized Neoarchean caldera complexes, containing well-preserved mafic-intermediate pillow lavas, pillow breccias, hyaloclastite and peperites, submarine lava domes and dome-associated breccia deposits. The complex is some 2.7 billion years old^[1] with a minimum strike length of 30 km (19 mi).