Springdale Caldera

The Springdale Caldera is a large Early Silurian caldera in west-central Newfoundland, Canada. It is at least 60 km long and 35 km wide, covering an area of more than 2000 km2. It is one of the few calderas in Newfoundland that form a large Silurian age volcanic field. Basalt, andesite, rhyolite, pyroclastic rocks, debris flows, breccias and red sandstone are present at the Springdale Caldera.