Abstract
The 10–14 km thick Archean volcano-sedimentary sequence in the Chibougamau region is composed of two mafic to felsic cycles, and of two thick, predominantly epiclastic, sedimentary sequences. The supracrustal suite is isoclinally folded along east-west axes, and punctuated by syn-volcanic, syn-kinematic and post-kinematic plutons. Tonalitic basement occurs along the northern margin, in a central horst, and as large rafts in later batholiths. Events affecting the supracrustal rocks are recorded in the tectono-magnetic history of the basement gneiss superimposed on the events related to basement formation.
The first volcanic cycle consists of a mafic lava plain with felsic volcanic centers rising above sea level. Stabilization by the intrusion of a sub-volcanic batholith above the basement led to the erosion of much of the volcanic edifice, which terminated activity in the southern portion of the belt. The second volcanic cycle built on the first cycle in the north and terminated with the intrusion of a subvolcanic differentiated complex and batholith, uplifting the volcanic edifice and shedding elastics into marginal basins.
Major east-west folding was coupled with the injection of elongate monzodiorite and tonalité batholiths along the basement supracrustal boundaries. The deformation pattern is strongly affected by the presence of basement and pre-kinematic plutons.
A tentative model favors a continent margin with periodic rifting controlling the development of the supracrustal sequence. The basement fracture pattern established at the outset has influenced every stage in the deposition, intrusion, and deformation of the belt.
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References
Allard, G.O., J.L. Caty and A. Gobeil, 1985, The Archean supracrustal rocks of the Chibougamau area.’ In: L.D. Ayres, P.C. Thurston, K.D. Card and W. Weber, eds., Evolution of Archean Supracrustal Sequences, Geological Association of Canada Special Paper 28, p. 55–63.
Carey, S. and H. Sigurdson, 1984, ‘A model of volcanogenic sedimentation in marginal basins.’ In: B.P. Kokelaar and M.F. Howells, eds., Marginal Basin Geology, Geological Society Special Publication 16, p. 37–58.
Cimon, J., 1976, Géologie du canton de Queylus (NE), Abitibi Est/ Rapport Préliminaire. Ministère de Richesses Naturelles, Quebec, DPV- 439, 36 p.
Chown, E.H. and Y. Bellavance, 1987, The position of syn-kinematic monzodiorite plutons in the structural development of an Archean fold belt: An example from Chibougamau.’ Geological Association of Canada/Mineralogical Association of Canada Abstracts, 12, p. 31.
Daigneault, R. and G.O. Allard, 1984, ‘Evolution tectonique d’une portion du sillon de roches vertes de Chibougamau.’ In: J. Guha and E.H. Chown, eds., Chibougamau, Stratigraphy and Mineralization, Canadian Institute of Mining and Metallurgy, Special Volume 34, p. 212–228.
Dallmeyer, R.D., 1974, ‘40Ar/39Ar incremental release ages of biotite and hornblende from pre-Kenoran gneisses between the Matagami-Chibougamau and Frotet-Troilus greenstone belts, Quebec.’ Canadian Journal of Earth Sciences, 11, p. 1586–1593.
Dimroth, E., L. Imreh, M. Rocheleau and N. Goulet, 1982, ‘Evolution of the south-central part of the Archean Abitibi Belt, Quebec.’ Part I: Stratigraphy and Paleographic model, Canadian Journal of Earth Sciences, 19, p. 1729–1758.
Dimroth, E., L. Imreh, M. Rocheleau and N. Goulet, 1983, Evolution of the south-central part of the
Archean Abitibi Belt, Quebec’ Part III: Plutonic and metamorphic evolution and geotectonic model, Canadian Journal of Earth Sciences, 20, p. 1374–1388.
Dimroth, E., G. Archambault, N. Goulet, J. Guha and W. Mueller, 1984a, ‘A mechanical analysis of the late Archean Gwillim shear belt, Chibougamau area, Quebec’ Canadian Journal of Earth Sciences, 21, p. 963–968.
Dimroth, E., M. Rocheleau and W. Mueller, 1984b, ‘Paleogeography, isostasy and crustal evolution in the Archean Abitibi Belt: A comparison between the Rouyn-Noranda and Chibougamau-Chapais Areas.’ In: J. Guha and E.H. Chown, eds., Chibougamau, Stratigraphy and Mineralization, Canadian Institute of Mining and Metallurgy, Special Volume 34, p. 73–91.
Dimroth, E., M. Rocheleau, W. Mueller, P. Archer, H. Brisson, G. Fortin, M. Jutras, C. Lefebvre, M. Piché, P. Pilote and P. Simoneau, 1985, ‘Paleogeographic and paleotectonic response to magma tic processes: a case history from the Archean sequence in the Chibougamau area, Quebec’ Geologische Rundschau, Band 74, p. 11–32.
Dimroth, E., W. Mueller, R. Daigneault, H. Brisson, A. Poitras and M. Rochleau, 1986, ‘Diapirism during regional compression: the structural pattern in the Chibougamau region of the Archean Abitibi belt, Quebec’ Geologische Rundschau, Band 75, p. 715–736.
Eriksson, K.A., 1982, ‘Sedimentation patterns in the Barberton Mountain Land, South Africa and the Pilbara Block, Australia: evidence for a rifted continental margin.’ Tectonophysics, 81, p. 179–193.
Gariepy, C. and C.J. Allegrè, 1985, ‘The lead isotope geochemistry of late kinematic intrusives from the Abitibi greenstone belt and their implications for late Archean crustal evolution.’ Geochimica and Cosmochimica Acta, 49, p. 2371–2384.
Gariepy, C, C.J. Allegrè and J. Lajoie, 1984, ‘U-Pb systematics in single zircons from the Pontiac sediments, Abitibi greenstone belt.’ Canadian Journal of Earth Sciences, 21, p. 1296–1304.
Goodwin, A.M., 1977, ‘Archean basin-craton complexes and the growth of Precambrian shields.’ Canadian Journal of Earth Sciences, 14, p. 2737–2759.
Goodwin, A.M. and R.H. Ridler, 1970, ‘The Abitibi Orogenic Belt’ In: A.J. Baer, ed., Symposium on Basins and Geosynclines of the Canadian Shield. Geological Survey of Canada Paper 70–40, p. 1–30.
Jensen, L.S., 1985, ‘Stratigraphy and petrogenesis of Archean metavolcanic sequences, southwestern Abitibi Subprovince, Ontario.’ In: L.D. Ayres, P.C. Thurston, K.D. Card and W. Weber, eds., Evolution of Archean Supracrustal Sequences, Geological Association of Canada, Special Paper 28, p. 66–87.
Krogh, T., 1982, ‘Improved accuracy of U-Pb zircon ages by the creation of more concordant systems using an air abrasion technique.’ Geochimica and Cosmochimica Acta, 46, p. 637–649.
Ludden, J., C. Hubert and C. Gariepy, 1986, ‘The tectonic evolution of the Abitibi greenstone belt of Canada.’ Geological Magazine, 123, p. 153–166.
Maybin, A.H., 1974, ‘Preliminary report for the SW 1/4 of Guercheville Township.’ Ministère des Richesses Naturelles, Québec, DP-251, 4 p.
Mortensen, J.K., 1987, ‘U-Pb chronostratigraphy of the Abitibi Greenstone Belt.’ Geological Association of Canada/Mineralogical Association of Canada Abstracts, 12, p. 75.
Mueller, W. and E. Dimroth. 1984, ‘Sedimentology and depositional history of the Blondeau and Chebistuan Formations in the Waconichi syncline, Chibougamau, Quebec’ In: J. Guha and E.H. Chown, eds., Chibougamau, Stratigraphy and Mineralization, Canadian Institute of Mining and Metallurgy, Special Volume 34, p. 137–152.
Mueller, W. and E. Dimroth, E. Dimroth, 1987, ‘A terrestrial-shallow marine transition in the Archean Opemisca Group east of Chapais, Quebec’ Precambrian Research, 35.
Mueller, W., E.H. Chown, L. Tait, M. Rocheleau and K.N.M. Sharma, in prep, ‘Paleogeographic and paleotectonic evolution of a basement-controlled supracrustal sequence, Chibougamau, Quebec’
Percival, J.A. and K.D. Card, 1983, ‘Archean crust as revealed in the Kapuskasing uplift, Superior Province, Canada.’ Geology, 11, p. 323–326.
Racicot, D., E.H. Chown and T. Hanel, 1984, Tlutons of the Chibougamau-Desmaraisville belt; a preliminary survey.’ In: J. Guha and E.H. Chown, eds., Chibougamau, Stratigraphy and Mineralization, Canadian Institute of Mining and Metallurgy, Special Volume 34, p. 178–197.
Sederholm, J.J., 1967, Selected works: granites and migmatites. (reprint) Oliver & Boyd Ltd. Edinburgh, 607 p.
Sharma, K.M.N., A. Gobeil and W. Mueller, 1987, ‘Stratigraphie de la région du lac Caopatina.’ Ministère d’Energie et des Ressources, Québec, MB 87–16, 16 p.
Tait, L., P. Pilote and E.H. Chown, 1986, ‘Rapport Préliminaire sur la région du lac à l’Eau Jaune.’ Ministère d’Energie et des Ressources, Québec, DP 86–09.
Tait, L. and E.H. Chown, 1987, ‘Rapport Préliminaire sur la région du Guesclin.’ Ministère d’Energie et des Ressources, Québec, DP 87–12.
Thibault, P., 1985, Application de la méthode de datation U-Pb (Zircon) à des roches ignées des ensembles volcano-sédimentaires archéens de l’Abitibe et de Frotet-Evans, (MSc Thesis): Montréal, Québec, Université de Montréal, 164 p.
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Chown, E.H., Mueller, W. (1992). Basement Influence on the Supracrustal and Plutonic Evolution and Deformation of an Archean Greenstone Belt. In: Mason, R. (eds) Basement Tectonics 7. Proceedings of the International Conferences on Basement Tectonics, vol 1. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-0833-3_33
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DOI: https://doi.org/10.1007/978-94-017-0833-3_33
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