The nature of sialic basement to the Dunnage Zone, northern Newfoundland: evidence from crustal xenoliths

• Published in: Canadian Journal of Earth Sciences
• Main Authors: Owen, J. Victor, Greenough, John D., Fryer, Brian J.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Canadian Science Publishing 1991
• Subjects: General Earth and Planetary Sciences; Alcock; Notre Dame Bay; Alcock Island; Newfoundland
• Online Access: http://dx.doi.org/10.1139/e91-097; http://www.nrcresearchpress.com/doi/pdf/10.1139/e91-097

Quartzofeldspathic xenoliths representing the probable structural basement to the northern Dunnage Zone occur in lamprophyre dykes on Alcock Island and vicinity, Notre Dame Bay. The dykes occur close to the boundary between seismically defined lower crustal blocks (LCB) below the Dunnage Zone, so th...