Rush Pluton
Stratigraphic label: [narc]rus
Map symbol: nArus

First published: 12 December 2018
Last modified:










Translation of original French




Informal subdivision(s)
Numbering does not necessarily reflect the stratigraphic position.
Author: Dion et al., 1992
Age: Neoarchean
Reference section: None
Type area: Northwestern portion of sheet 32G15-200-0202 and southwestern portion of sheet 32J02-200-0102
Geological province: Superior Province
Geological subdivision: Abitibi Subprovince
Lithology: Tonalite
Type: Lithodemic
Rank: Lithodeme
Status: Formal
Use: Active





This tonalitic Rush Pluton was defined by Dion et al. (1992).




The tonalitic composition and layout of the Rush Pluton were interpreted from gravimetric and aeromagnetic data (Dion et al., 1992; Morin, 1994; Keating and D’Amours, 2010), as it does not outcrop. 



Thickness and Distribution

The Rush Pluton layout corresponds to negative gravimetric and aeromagnetic anomalies (Dion et al., 1992; Morin, 1994; Keating and D’Amours, 2010). It has an irregular shape: its N-S axis is 4.5 km and its E-W axis is 5 km. In addition, it shows an apophysis measuring 1 x 2 km which extends to the east.




Stratigraphic Relationship(s)

The Rush Pluton cuts volcanic and sedimentary rocks of the Bruneau (2724.4 ±1.2 Ma; Davis et al., 2014), Blondeau (<2721 ±3 Ma; Leclerc et al., 2012) and Bordeleau formations that characterize the summit of the Roy Group. 


Does not apply.


Author(s) Title Year of Publication Hyperlink (EXAMINE or Other)
DAVIS, D.W. – SIMARD, M. – HAMMOUCHE, H. – BANDYAYERA, D. – GOUTIER, J. – PILOTE, P. – LECLERC, F. – DION, C. Datations U-Pb effectuées dans les provinces du Supérieur et de Churchill en 2011-2012. Ministère des Ressources naturelles, Québec; RP 2014-05, 62 pages. 2014 RP 2014-05
DION, D.J. – MORIN, R. – KEATING, P. Synthèse géologique et géophysique de la région de Chapais : portion orientale de la ceinture de l’Abitibi québécoise. Canadian Journal of Earth Sciences; volume 29, pages 314-327. 1992 Source
KEATING, P. – D’AMOURS, I. Réédition des données numériques en format GEOSOFT (profils) des levés aéroportés de l’Abitibi, au Québec. Ministère des Ressources naturelles et de la Faune, Québec, Geological Survey of Canada; DP 2010-09, 6 pages. 2010 DP 2010-09
LECLERC, F. – HARRIS, L.B. – BÉDARD, J.H. – VAN BREEMEN, O. – GOULET, N. Structural and stratigraphic controls on magmatic, volcanogenic and syn-tectonic mineralization in the Chapais-Chibougamau mining camp, northeastern Abitibi, Canada. Economic Geology; volume 107, pages 963-989. 2012 Source
MORIN, R. Géologie et compilation géologique de la région de Chapais. Ministère des Ressources naturelles, Québec; MM 91-02, 66 pages, 6 plans. 1994 MM 91-02



15 octobre 2019