Springdale Caldera
Appearance
The Springdale Caldera is a large Early Silurian caldera in west-central Newfoundland, Canada. It is at least Template:Unit km long and Template:Unit km wide with an area more than 2,000 km2. It is one of the few calderas in Newfoundland that form a large Silurian age volcanic field and consists of basalt, andesite, rhyolite, pyroclastic rocks, debris flows, breccias, and red sandstone.[1]