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Eau Jaune Complex

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Journal Article

Petrogenesis and mode of emplacement of a Neoarchean tonalite–trondhjemite–diorite suite: the Eau Jaune Complex, Abitibi greenstone belt

Marie A. Kieffer, Lucie Mathieu, Pierre Bedeaux, Damien Gaboury, Michael A. Hamilton
Published: 24 August 2021
Canadian Journal of Earth Sciences (2022) 59 (2): 87–110.
DOI: https://doi.org/10.1139/cjes-2021-0016
.... Such TTD suites have recently been recognized in the Archean Abitibi greenstone belt, on the southern flank of the Superior Craton, Canada, but their source(s), differentiation processes, and depths of emplacement remain poorly constrained. The Neoarchean Eau Jaune Complex lies in the northeastern corner...
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View PDF for article title, Petrogenesis and mode of emplacement of a Neoarchean tonalite–trondhjemite–diorite suite: the <span class="search-highlight">Eau</span> <span class="search-highlight">Jaune</span> <span class="search-highlight">Complex</span>, Abitibi greenstone belt
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Image
Simplified geological map of the Eau Jaune Complex (EJC) area, modified from the Quebec Ministry of Energy and Natural Resources (Ministère de l’Énergie et des Ressources Naturelles, MERN) map (SIGÉOM 2018, 2019), showing the locations of the 155 outcrops visited as part of this study. The lithogeochemical samples analyzed as part of this study and those analyzed earlier by the Quebec MERN are displayed with a bold white outline. The colours correspond to the main lithology of each outcrop based upon its mineralogy and its geochemical characteristics when available. The map projection system is UTM NAD83 Zone 18 N. [Colour online.]

Simplified geological map of the Eau Jaune Complex (EJC) area, modified fro...

Published: 24 August 2021
Fig. 2. Simplified geological map of the Eau Jaune Complex (EJC) area, modified from the Quebec Ministry of Energy and Natural Resources (Ministère de l’Énergie et des Ressources Naturelles, MERN) map ( SIGÉOM 2018 , 2019 ), showing the locations of the 155 outcrops visited as part of this study
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Simplified geological map of the Eau Jaune Complex area, modified from the Quebec Ministry of Energy and Natural Resources (Ministère de l’Énergie et des Ressources Naturelles, MERN) (SIGÉOM 2019) and showing the main foliation measured on visited outcrops as part of this study. Trajectories of main foliation according to the work of Tait (1992), Midra et al. (1992), and Leclerc et al. (2015), as available on the SIGÉOM (2019), are also represented. The map projection system is UTM NAD83 Zone 18 N. Legend is as in Fig. 2. [Colour online.]

Simplified geological map of the Eau Jaune Complex area, modified from the ...

Published: 24 August 2021
Fig. 8. Simplified geological map of the Eau Jaune Complex area, modified from the Quebec Ministry of Energy and Natural Resources (Ministère de l’Énergie et des Ressources Naturelles, MERN) ( SIGÉOM 2019 ) and showing the main foliation measured on visited outcrops as part of this study
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Pictures showing deformation of the Eau Jaune Complex (EJC). (a) Obatogamau metavolcanic mafic xenolith displaying a strong ductile (note elongate feldspar glomerocrysts), which is truncated by the quartz diorite tonalite 2b, and therefore developed before their incorporation into the EJC. (b) Compositional layering of a mafic xenolith (N100°/76°) and foliation developed during amphibolite-condition metamorphism (N164°/88°). (c) Strong banding inside the N100°–N130° deformation corridor, visible on one outcrop of the Moly-Desgagné showing. (d) Epidote ball inside an amphibolite-grade metamorphosed mafic xenolith. The ball displays a delta-shape asymmetry suggesting a sinistral rotation. [Colour online.]

Pictures showing deformation of the Eau Jaune Complex (EJC). ( a ) Obatogam...

Published: 24 August 2021
Fig. 10. Pictures showing deformation of the Eau Jaune Complex (EJC). ( a ) Obatogamau metavolcanic mafic xenolith displaying a strong ductile (note elongate feldspar glomerocrysts), which is truncated by the quartz diorite tonalite 2b, and therefore developed before their incorporation
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Chemical composition of the six intrusive phases of the Eau Jaune Complex c...

Published: 24 August 2021
Table 3. Chemical composition of the six intrusive phases of the Eau Jaune Complex compared with that of tonalite–trondhjemite–granodiorite (TTG) suites, as reviewed by Moyen and Martin (2012) .
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Summary and characteristics of the deformation episodes of the Eau Jaune Co...

Published: 24 August 2021
Table 2. Summary and characteristics of the deformation episodes of the Eau Jaune Complex (EJC) area.
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Mean and standard deviation (σ) of major and trace elements within the six ...

Published: 24 August 2021
Table 1. Mean and standard deviation (σ) of major and trace elements within the six major intrusive phases of the Eau Jaune Complex (EJC).
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Harker diagrams (major and minor elements versus SiO2) displaying the 37 samples from the Eau Jaune Complex analyzed as part of this study and 31 analyses compiled from the SIGÉOM (2018) database. Trends are shown using grey dashed lines. Legend is as in Fig. 11. [Colour online.]

Harker diagrams (major and minor elements versus SiO 2 ) displaying the 37 ...

Published: 24 August 2021
Fig. 13. Harker diagrams (major and minor elements versus SiO 2 ) displaying the 37 samples from the Eau Jaune Complex analyzed as part of this study and 31 analyses compiled from the SIGÉOM (2018) database. Trends are shown using grey dashed lines. Legend is as in Fig. 11 . [Colour online.]
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Rose diagrams of main foliation measurements taken during this study in (a) magmatic phases of the Eau Jaune Complex and (b) mafic xenoliths. Note that we chose to represent directions rather than strike/dip because very few dip measurements were possible as the outcrops were planar. [Colour online.]

Rose diagrams of main foliation measurements taken during this study in ( a...

Published: 24 August 2021
Fig. 9. Rose diagrams of main foliation measurements taken during this study in ( a ) magmatic phases of the Eau Jaune Complex and ( b ) mafic xenoliths. Note that we chose to represent directions rather than strike/dip because very few dip measurements were possible as the outcrops were planar
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Detailed mapping, using a 1 m × 1 m grid, of the main trench of the Moly-Desgagné showing and the sample locations, created as part of this study. Three of the six Eau Jaune Complex magmatic phases (1a, 1b, and 2b) are displayed here and crosscutting relationships are clearly seen. Note that the rocks of this outcrop underwent strong deformation events and were later affected by hydrothermal alteration. [Colour online.]

Detailed mapping, using a 1 m × 1 m grid, of the main trench of the Moly-De...

Published: 24 August 2021
Fig. 3. Detailed mapping, using a 1 m × 1 m grid, of the main trench of the Moly-Desgagné showing and the sample locations, created as part of this study. Three of the six Eau Jaune Complex magmatic phases (1a, 1b, and 2b) are displayed here and crosscutting relationships are clearly seen. Note
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Pictures (a, c, and e) and microphotographs (b, d, and f) in crossed nicols showing typical textures of the Eau Jaune Complex magmatic phases: (a and b) biotite-tonalite 2b; (c and d) trondhjemite 3a; (e and f) amphibole-rich diorite 3b. Aln, allanite; Bt, biotite; Chl, chlorite; Ep, epidote; Hbl, hornblende; Pl, plagioclase; Qz, quartz; Ser, sericite. [Colour online.]

Pictures ( a , c , and e ) and microphotographs ( b , d , and f ) in cr...

Published: 24 August 2021
Fig. 5. Pictures ( a , c , and e ) and microphotographs ( b , d , and f ) in crossed nicols showing typical textures of the Eau Jaune Complex magmatic phases: ( a and b ) biotite-tonalite 2b; ( c and d ) trondhjemite 3a; ( e and f ) amphibole-rich diorite 3b. Aln, allanite; Bt, biotite
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Pictures (a, c, and e) and microphotographs (b, d, and f) in crossed nicols showing typical textures of the Eau Jaune Complex magmatic phases: (a and b) granodiorite 1a; (c and d) quartz diorite-tonalite 1b; (e and f) tonalite 2a. Act, actinolite; Afs, alkali feldspar; Cb, carbonates; Hbl, hornblende; Mc, microcline; Myr, myrmekite; Qz, quartz; Ser, sericite; Wmca, white micas. [Colour online.]

Pictures ( a , c , and e ) and microphotographs ( b , d , and f ) in cr...

Published: 24 August 2021
Fig. 4. Pictures ( a , c , and e ) and microphotographs ( b , d , and f ) in crossed nicols showing typical textures of the Eau Jaune Complex magmatic phases: ( a and b ) granodiorite 1a; ( c and d ) quartz diorite-tonalite 1b; ( e and f ) tonalite 2a. Act, actinolite; Afs, alkali
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Multi-element diagrams (a, c, and e) for immobile elements, as ordered after Pearce (2008) and rare-earth element diagrams (b, d, and f) normalized to the primitive mantle (Hoffmann 1988). The diagrams display the 37 intrusive rocks from the Eau Jaune Complex (EJC) analyzed as part of this study and 31 analyses compiled from the SIGÉOM (2018) database. Each line corresponds to a sample and an area corresponds to minimum and maximum values. [Colour online.]

Multi-element diagrams ( a , c , and e ) for immobile elements, as ordere...

Published: 24 August 2021
Fig. 14. Multi-element diagrams ( a , c , and e ) for immobile elements, as ordered after Pearce (2008) and rare-earth element diagrams ( b , d , and f ) normalized to the primitive mantle ( Hoffmann 1988 ). The diagrams display the 37 intrusive rocks from the Eau Jaune Complex (EJC) analyzed
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Concordia diagrams showing isotope dilution thermal ionization mass spectrometry following a chemical abrasion pre-treatment (CA-ID-TIMS) results from U–Pb zircon analyses for (a) sample 18UCD0137, a biotite tonalite from Eau Jaune Complex unit 2b, host to the Moly-Desgagné Mo showing, and (b) sample 18UCD0043, a trondhjemite from EJC unit 3a. Error ellipses and calculated age are shown at the 2σ level of uncertainty. [Colour online.]

Concordia diagrams showing isotope dilution thermal ionization mass spectro...

Published: 24 August 2021
Fig. 15. Concordia diagrams showing isotope dilution thermal ionization mass spectrometry following a chemical abrasion pre-treatment (CA-ID-TIMS) results from U–Pb zircon analyses for ( a ) sample 18UCD0137, a biotite tonalite from Eau Jaune Complex unit 2b, host to the Moly-Desgagné Mo showing
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Simplified geological map of the Chibougamau area. Numbers 1 to 13 correspond to: Chrissie Formation (1), Des Vents Formation (2), Bordeleau Formation (3), Scorpion Formation (4), Lac Doré Intrusive Suite (5), Rivière Opawica Intrusive Suite (6), Lac de la Chaleur Intrusive Suite (7), Eau Jaune Complex (8), Lapparent Intrusive Suite (9), and Presqu’Île Pluton (10). Map projection system is UTM NAD83 and coordinate system corresponds to zone 18N. The map was created using QGIS version 3.12.0 and assembled from the MERN dataset (SIGÉOM 2019). [Colour online.]

Simplified geological map of the Chibougamau area. Numbers 1 to 13 correspo...

Published: 01 December 2020
Jaune Complex (8), Lapparent Intrusive Suite (9), and Presqu’Île Pluton (10). Map projection system is UTM NAD83 and coordinate system corresponds to zone 18N. The map was created using QGIS version 3.12.0 and assembled from the MERN dataset ( SIGÉOM 2019 ). [Colour online.]
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Major element diagrams displaying the 37 intrusive rocks from the Eau Jaune Complex analyzed as part of this study (full symbols) and 31 analyses compiled from the SIGÉOM (2018) database. (a) Total alkali versus silica diagram (Le Bas et al. 1986); tonalite and trondhjemite fields after the tonalite–trondhjemite–granodiorite (TTG) compilation in the Abitibi subprovince of Mathieu et al. (2020a). (b) Alkali–iron–magnesium diagram (Irvine and Baragar 1971), with A = Na2O + K2O, F = FeOT, and M = MgO, in %. (c) Na–Ca–K (%) triangle also displaying experimental liquids, as compiled by Moyen and Martin (2012). [Colour online.]

Major element diagrams displaying the 37 intrusive rocks from the Eau Jaune...

Published: 24 August 2021
Fig. 11. Major element diagrams displaying the 37 intrusive rocks from the Eau Jaune Complex analyzed as part of this study (full symbols) and 31 analyses compiled from the SIGÉOM (2018) database. ( a ) Total alkali versus silica diagram ( Le Bas et al. 1986 ); tonalite and trondhjemite fields
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Conceptual diagrams illustrating the different steps leading to the Eau Jaune Complex (EJC) emplacement and its features. (a) Location of the cross-section. (b) Injection of EJC1 magma along a major structure, inducing contact metamorphism and forming a sill at stratigraphic discontinuities. (c) Growth of the sill by inflation to form a laccolith and initiate the overlapping of the Chrissie and Des Vents formations. The laccolith incorporates metamorphosed xenoliths and locally deforms the surrounding volcanic rocks (details in inset). (d) Intrusion of phases EJC2 and EJC3, also forming laccoliths. These intrusions metamorphose and deform the surrounding rocks. The laccoliths incorporate volcanic xenoliths, which were metamorphosed and deformed by the previous injections. Details in inset: xenoliths incorporated in phase EJC2, which were metamorphosed and deformed by growth of the EJC1 laccolith. Vertical scale is exaggerated. [Colour online.]

Conceptual diagrams illustrating the different steps leading to the Eau Jau...

Published: 24 August 2021
Fig. 16. Conceptual diagrams illustrating the different steps leading to the Eau Jaune Complex (EJC) emplacement and its features. ( a ) Location of the cross-section. ( b ) Injection of EJC1 magma along a major structure, inducing contact metamorphism and forming a sill at stratigraphic
Journal Article

Potential-field modelling of the prospective Chibougamau area (northeastern Abitibi subprovince, Quebec, Canada) using geological, geophysical, and petrophysical constraints

Amir Maleki, Richard Smith, Esmaeil Eshaghi, Lucie Mathieu, David Snyder, Mostafa Naghizadeh
Published: 20 August 2020
Canadian Journal of Earth Sciences (2021) 58 (3): 297–312.
DOI: https://doi.org/10.1139/cjes-2019-0221
..., which occupies the core of the Chibougamau anticline, the Boisvert and La Dauversière plutons (TTG suites), as well as the Eau Jaune Complex (TTD suite), are aligned in the east–west direction along the axial trace of the La Dauversière anticline ( Pitcher 1979 ; Castro 1986 ). It is possible that syn...
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View PDF for article title, Potential-field modelling of the prospective Chibougamau area (northeastern Abitibi subprovince, Quebec, Canada) using geological, geophysical, and petrophysical constraints
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Journal Article

Petrogenesis of a TTG intrusive suite: the La Dauversière pluton, Abitibi greenstone belt, Canada

L. Mathieu, M. Leybourne
Published: 29 May 2024
Canadian Journal of Earth Sciences (2024) 61 (8): 855–875.
DOI: https://doi.org/10.1139/cjes-2024-0002
... uncertainties. In the Chibougamau area, TTG suites are less prevalent compared to TTD suites, e.g., the Chibougamau pluton and the Eau Jaune complex ( Mathieu and Racicot 2019 ; Kieffer et al. 2021 ). The La Dauversière tonalite–granodiorite pluton stands out as the largest TTG suite...
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View PDF for article title, Petrogenesis of a TTG intrusive suite: the La Dauversière pluton, Abitibi greenstone belt, Canada
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Journal Article

Fluid sources and mineralizing processes in greenstone belts: a stable isotope (O, H) comparison between the weakly mineralized Moly-Desgagné–Guercheville system and Val-d’Or orogenic gold deposits, Canada

Marie A. Kieffer, Christophe Scheffer, Benoît Quesnel, Pierre Bedeaux, Georges Beaudoin, Lucie Mathieu, Damien Gaboury
Published: 31 May 2022
Canadian Journal of Earth Sciences (2022) 59 (10): 722–743.
DOI: https://doi.org/10.1139/cjes-2021-0162
... ). The gold-free Moly-Desgagné minor molybdenum showing is located in the Chibougamau area, NE corner of the Abitibi greenstone belt, Canada ( Fig. 1 ). The showing, discovered in 1997, is hosted by the WNW–ESE deformation zone located in the eastern part of the Eau Jaune Complex (EJC; Desgagné 2007...
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View PDF for article title, Fluid sources and mineralizing processes in greenstone belts: a stable isotope (O, H) comparison between the weakly mineralized Moly-Desgagné–Guercheville system and Val-d’Or orogenic gold deposits, Canada
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