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Chukotat Group

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Photograph of pillow tubes in komatiitic basalt flows, <b>Chukotat</b> <b>Group</b> (leve...
Published: 29 May 2002
Fig. 8. Photograph of pillow tubes in komatiitic basalt flows, Chukotat Group (level 1). The basalt is olivine-phyric at this locality. Location of field photograph given in Fig.  4 . Backpack for scale.
Journal Article
Published: 01 January 1994
Canadian Journal of Earth Sciences (1994) 31 (1): 206-218.
... Proterozoic age are associated with both volcanic and sedimentary rocks (Povungnituk Group) that accumulated during continental rifting and a transitional continental to oceanic basalt sequence (Chukotat Group). Mineralization is found in two principal horizons. Important deposits occur in the Raglan horizon...
Journal Article
Published: 01 June 1994
Canadian Journal of Earth Sciences (1994) 31 (6): 986-994.
..., sedimentary rocks of pelitic and psammitic composition, and volcaniclastic rocks. They are juxtaposed along the Lanyan Lake Fault against a structurally thickened sequence of mafic to ultramafic pillowed volcanic suite belonging to the Chukotat Group. The occurrence of volcaniclastic horizons in the uppermost...
Journal Article
Published: 01 April 1984
Canadian Journal of Earth Sciences (1984) 21 (4): 489-499.
... affinity belonging to the Chukotat Group. The more primitive komatiitic basalts of the Chukotat Group evolved via fractional crystallization of olivine within a crustal feeder system that is represented by large, layered sills and discordant dyke – sill complexes. These intrusions occupy horizons...
Journal Article
Journal: Geology
Published: 01 April 1996
Geology (1996) 24 (4): 291-294.
... the Chukotat Group of the Lower Proterozoic (2.0–1.9 Ga) Cape Smith fold belt (northern Quebec). This flow and other mafic-ultramafic units of the fold belt represent some of the oldest relict oceanic crust identified on Earth. Measured δD values of whole-rock samples range from −53‰ to −40‰, matching closely...
Journal Article
Published: 01 April 2004
The Canadian Mineralogist (2004) 42 (2): 485-497.
... of the foreland thrust belt to the Ungava Orogen, an arc–continent collisional zone ( St-Onge et al. 1993 ). The southern section of the fold belt is composed of the Povungnituk and Chukotat groups ( Hynes & Francis 1982 ) that form parautochthonous sedimentary and volcanic cover units, associated...
FIGURES | View All (6)
Journal Article
Journal: Economic Geology
Published: 01 March 2016
Economic Geology (2016) 111 (2): 467-485.
...Yakun Liu; James E. Mungall; Doreen E. Ames Abstract The Tootoo and Mequillon Ni-Cu-Pt-Pd deposits in the South Raglan Trend of the New Quebec orogen host significant but as yet unexploited nickel-copper-platinum group element (PGE) mineralization within the mafic-ultramafic rocks of the Expo...
FIGURES | View All (13)
Journal Article
Journal: Economic Geology
Published: 01 June 2010
Economic Geology (2010) 105 (4): 795-823.
... mineralization characterized by low-moderate R factors (300–1,100: Barnes and Picard, 1993 ; Gillies, 1993 ). They are conformably overlain by uncontaminated but slightly PGE depleted olivine-phyric, pyroxene-phyric, and plagioclase-phyric basalts of the Chukotat Group ( Francis et al., 1983 ; Lesher et al...
FIGURES | View All (13)
Series: Economic Geology
Published: 01 January 2005
DOI: 10.5382/AV100.08
EISBN: 9781934969519
... by the continental flood basalts, alkali basalts, and shelf sedimentary rocks of the Povungnituk Group ( Francis et al., 1983 ; Picard et al., 1990 ). The Povungnituk Group is in turn overlain by the Chukotat Group which consists of komatiitic basalts at the base and mid-ocean ridge basalts (MORB) toward the top...
FIGURES | View All (22)
Journal Article
Published: 01 October 2005
The Canadian Mineralogist (2005) 43 (5): 1735-1744.
... groups: a lower sedimentary group, the central Povungnituk Group (shelf sediments and dominantly continental tholeiitic basalts) and the upper Chukotat Group (komatiitic and tholeiitic basalts). Mineralized Cu–Ni–PGE zones with a Ni:Cu ratio around 3:1 occur at the transition between the Povungnituk...
FIGURES
Journal Article
Published: 22 December 2005
Canadian Journal of Earth Sciences (2005) 42 (10): 1653-1675.
... through late Archean to Mesoproterozoic time. Group I mafic and ultramafic granulites of the Parautochthonous Belt compositions overlap Archean Abitibi metavolcanic rocks (komatiites to Fe-rich andesites) supporting their autochthonous character. Limited variation of incompatible trace-element ratios...
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Journal Article
Published: 01 April 2000
The Canadian Mineralogist (2000) 38 (2): 379-398.
... amphibolite au niveau de la croûte médiane pendant une collision est principalement le résultat de processus structuraux et géohydrologiques. The parautochthonous sedimentary and volcanic units of Level 1 (Povungnituk and Chukotat groups, Fig. 2 ) define the Paleoproterozoic continental-margin sequence...
FIGURES | View All (9)
Series: Geological Society, London, Special Publications
Published: 01 January 2009
DOI: 10.1144/SP318.7
EISBN: 9781862395664
... ) the Rae craton, the Ellesmere–Devon terrane and Inglefield mobile belt, the Piling Group–Hoare Bay Group–Karrat Group–Anap nunâ Group cratonic margin, the Foxe fold belt, the Rinkian fold belt, the Aasiaat domain, the Nagssugtoqidian orogen, the North Atlantic craton, the Torngat orogen, the Makkovik...
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Journal Article
Published: 01 April 2001
The Canadian Mineralogist (2001) 39 (2): 673-696.
... area to area within a deposit, and within a single area with time, there are many opportunities to decouple contamination from chalcophile element depletion. Abstract Dans la plupart des cas, les gisements de sulfures de nickel, cuivre, et éléments du groupe du platine associés aux coulées...
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Image
Space–time relationship of tectonostratigraphic assemblages in the Ungava P...
Published: 29 May 2002
to the northern rifted margin (Povungnituk and Chukotat groups) of the Superior Province. Level 1 corresponds to the collisional lower plate, whereas levels 2 and 3 correspond to the collisional upper plate. Jagged horizontal line marks a stratigraphic relationship, whereas a horizontal arrow indicates a tectonic
Journal Article
Published: 01 December 2001
The Canadian Mineralogist (2001) 39 (6): 1725-1732.
... (Povungnituk and Chukotat groups) associated with multiple rifting of the Superior Province at 2.04 and 1.92 Ga. Structurally overlying the parautochthonous units are upper-plate ( i.e. , allochthonous) Paleoproterozoic crustal elements interpreted as an ophiolite (Watts Group) [2.00 Ga], containing (i...
FIGURES
Image
Selected geochemical data for the Raglan area of the east-central Cape Smit...
Published: 01 April 2001
/Yb] MN . Chukotat Ol-, Px-, and Pl-phyric basalts: olivine-, pyroxene-, and plagioclase-phyric basalts overlying mineralized lava-channels; Raglan ultramafic bodies: mineralized komatiitic periodotite units; Unmineralized Flows: levee facies and thick layered flows overlying mineralized units
Image
Selected geochemical data for the Raglan area of the east-central Cape Smit...
Published: 01 April 2001
/Yb] MN . Chukotat Ol-, Px-, and Pl-phyric basalts: olivine-, pyroxene-, and plagioclase-phyric basalts overlying mineralized lava-channels; Raglan ultramafic bodies: mineralized komatiitic periodotite units; Unmineralized Flows: levee facies and thick layered flows overlying mineralized units
Image
Selected geochemical data for the Raglan area of the east-central Cape Smit...
Published: 01 April 2001
/Yb] MN . Chukotat Ol-, Px-, and Pl-phyric basalts: olivine-, pyroxene-, and plagioclase-phyric basalts overlying mineralized lava-channels; Raglan ultramafic bodies: mineralized komatiitic periodotite units; Unmineralized Flows: levee facies and thick layered flows overlying mineralized units
Image
Selected geochemical data for the Raglan area of the east-central Cape Smit...
Published: 01 April 2001
/Yb] MN . Chukotat Ol-, Px-, and Pl-phyric basalts: olivine-, pyroxene-, and plagioclase-phyric basalts overlying mineralized lava-channels; Raglan ultramafic bodies: mineralized komatiitic periodotite units; Unmineralized Flows: levee facies and thick layered flows overlying mineralized units