Iapetus Ocean floor stuffed into a suture zone: xenolith Nd isotopic evidence for Dunnage-equivalent basement in central Newfoundland

• Published in: Canadian Journal of Earth Sciences
• Main Authors: Fryer, Brian J., Greenough, John D., Owen, J. Victor
• Format: Article in Journal/Newspaper
• Language: English
• Published: Canadian Science Publishing 1997
• Subjects: General Earth and Planetary Sciences; Notre Dame Bay; Newfoundland
• Online Access: http://dx.doi.org/10.1139/e17-111; http://www.nrcresearchpress.com/doi/pdf/10.1139/e17-111

Granulite-facies xenoliths from Late Jurassic alkaline lamprophyres may represent basement to the Dunnage Zone in north-central Newfoundland (Notre Dame Bay area). At 143 Ma the xenoliths had positive ε Nd values between 0.9 and 4.7. They give Nd depleted mantle model ages around 700 Ma and have tra...