Comment on Hinchey (2021): “Lithogeochemical and Nd isotopic constraints on felsic magmatism in the Makkovik Orogen, Labrador, Canada: Implications for assembly of the supercontinent Nuna”

Hinchey (2021) uses new Nd isotope data for metavolcanic and plutonic rocks from the Aillik Domain of the Makkovik Province to propose a reinterpretation of the Makkovik Province, arguing that the Aillik and Cape Harrison domains of the orogen should be combined into a single new domain. However, Hinchey reaches this conclusion by re-plotting the locations of the analysed samples to give the impression that Makkovikian rocks of the Aillik and Cape Harrison domains had similar ranges of (initial) Nd isotope composition. I will show in this comment that Hinchey's claim of largely overlapping Nd isotope signatures in the Aillik and Cape Harrison domains is incorrect, and that multiple lines of isotopic evidence do not support her tectonic model.