Springdale Caldera
The Springdale Caldera is a large Early Silurian caldera in west-central Newfoundland, Canada. It is at least long and wide, covering an area of more than. 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.