Localized Backarc Extension in an Overall Compressional Setting During the Assembly of Nuna: Geochemical and Isotopic Evidence From Orosirian (1883–1848 Ma) Mafic Magmatism of the Aillik Group, Labrador, Canada

• Published in: Earth and Space Science
• Main Author: A. M. Hinchey
• Format: Article in Journal/Newspaper
• Language: English
• Published: American Geophysical Union (AGU) 2021
• Subjects: Nd isotopic data; supercontinent assembly; major and trace element geochemistry; paleoproterozoic orogens; backarc basin; mafic volcanism; Astronomy; QB1-991; Geology; QE1-996.5; Canada; Makkovik; North Atlantic; Ocean Island
• Online Access: https://doi.org/10.1029/2020EA001489; https://doaj.org/article/88529609143842ad88a77263392fbb15

Abstract Bimodal volcanism occurs in a range of extensional environments that are characterized by distinctive but overlapping, lithogeochemical and isotopic signatures and lithological assemblages. Where basaltic magmatism is associated with ferroan (A‐type) rhyolites, it is typically the lithogeoc...