|Author:||Mathieu and Beaudette, 2019|
|Type area:||Old Asbestos Hill Mine area, Purtuniq (NTS sheet 35H13)|
|Geological province:||Churchill Province|
|Geological subdivision:||Ungava Orogen / Ungava Trough / Northern Domain|
The Purtuniq Pluton was defined by Mathieu and Beaudette (2019) to individualize a kilometre-sized pluton belonging to the Cape Smith Suite. This suite was introduced by Taylor (1982) as a sequence of late intrusions of various natures (granitic to peridotitic). These intrusions occur throughout the Ungava Orogen, but mostly in the Northern Domain.
The pluton covers an area of ~0.5 km2. The measured apparent thickness is 120 m. Rocks of the Watts Group have been thrust over the Spartan Group in the vicinity of Purtuniq Pluton outcrops.
A sample of Purtuniq Pluton tonalite was dated 1876.1 ±1.5 Ma (Parrish, 1989).
Does not apply.
MATHIEU, G., BEAUDETTE, M. 2019. Géologie de la région du lac Watts, Domaine Nord, Fosse de l’Ungava, Nunavik, Québec, Canada. MERN. BG 2019-04.
Machado, N., David, J., Scott, D.J., Lamothe, D., Philippe, S., Gariépy, C. 1993. U-Pb geochronology of the western Cape Smith Belt, Canada: new insights on the age of initial rifting and arc magmatism. Precambrian Research; volume 63, pages 211–223. doi.org/10.1016/0301-9268(93)90034-Y.
Parrish, R.R. 1989. U-Pb geochronology of the Cape Smith Belt and Sugluk block, northern Quebec. Geoscience Canada; volume 16, pages 126–130. Source.
Taylor, F.C. 1982. Reconnaissance geology of a part of the Canadian Shield, northern Quebec and Northwest Territories. Geological Survey of Canada, Memoir 399, 32 pages (7 sheets). doi.org/10.4095/109241.