Geology, geochemistry and geochronology of the Springdale Group, an early Silurian Caldera in central Newfoundland

• Main Author: Coyle, Marylou
• Format: Thesis
• Language: English
• Published: Memorial University of Newfoundland 1990
• Subjects: Cape St. John; Indian; King's Point; Newfoundland
• Online Access: https://research.library.mun.ca/6799/; https://research.library.mun.ca/6799/5/MarylouCoyle.pdf

Volcanic-sedimentary facies and structural relationships of the Silurian Springdale group in west central Newfoundland are indicative of a large collapse caldera, with an area of more than 2,000 km². Basaltic flows, andesite flows and pyroclastics rocks, silicic ash-flow tuffs, high -silica rhyolite...