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.Geology of the Springdale Group: a newly recognized Silurian epicontinental-type caldera in Newfoundland
See also Volcanism of Canada Volcanism of Eastern Canada List of volcanoes in Canada
References
External links The Springdale Caldera: A Field Guide for the Annual Field Meeting of the Geological Association of Canada, Newfoundland Branch Discordant Silurian paleolatitudes for central Newfoundland: New paleomagnetic evidence from the Springdale Group Sulurian Orogeny in the Newfoundland Appalachians Discordant Sulrian Paleolatitudes Geology, geochemistry and geochronology of the Springdale Group, an early Silurian Caldera in central Newfoundland