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Timiskaming-Grenville contact

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Journal Article
Published: 08 June 2023
Canadian Journal of Earth Sciences (2023) 60 (11): 1509–1529.
... of nearby Lake Timiskaming ( Doughty et al. 2013 ); though it is much thicker there, likely reflecting the considerably larger fluvial inflows from much larger glacial melt rivers. However, as reconnaissance of other lake basins proceeds, more complex fills are being recognized where primary ice-contact...
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Journal Article
Journal: SEG Discovery
Published: 01 April 2007
SEG Discovery (2007) (69): 1–15.
... has hindered the application of traditional Abitibi exploration criteria such as crustal-scale faults and “Timiskaming-type” sedimentary rocks. New area selection criteria are needed for successful greenfield exploration in this frontier region, and the use of steep metamorphic gradients is presented...
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Journal Article
Published: 01 April 2000
Canadian Journal of Earth Sciences (2000) 37 (1): 1–15.
... characteristics of the Midway sequence are generally similar to those of the Timiskaming Group and Timiskaming-type rocks in Canada, and more specifically to those of the Shebandowan Group in the Thunder Bay district. This similarity implies that the latest Archean tectonic and magmatic history of the western...
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Journal Article
Journal: Economic Geology
Published: 01 August 2021
Economic Geology (2021) 116 (5): 1053–1072.
...-tectonic intrusions are interpreted to postdate the Timiskaming assemblage ( Fig. 1 ; Ayer et al., 2005 ). Along the Matheson transect, distinct lithological contacts occur between the Blake River and Tisdale volcanic rocks, the Tisdale and the Porcupine sedimentary rocks, and the Porcupine sedimentary...
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Journal Article
Journal: Economic Geology
Published: 01 September 2008
Economic Geology (2008) 103 (6): 1091–1096.
... sulfide (VMS) deposits. The first reflection seismic imaging of Superior province supracrustal units allows upper crustal unit contacts and structures to be traced into the subsurface and provides the first view of major structures associated with epigenetic gold mineralization. Finally, a model...
FIGURES
Journal Article
Published: 07 December 2005
Canadian Journal of Earth Sciences (2005) 42 (10): 1719–1734.
... Gauthier et al. 2004 b ). The numbers 48–29–15 and 52–54 refer to stations along the Abitibi–Grenville Lithoprobe deep seismic profile ( Ludden and Hynes 2000 ). HMR, trace of the Huronian rift and magmatic province ( James et al. 2002 ) and of its possible extension in the Grenville Province Timiskaming...
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Journal Article
Journal: Economic Geology
Published: 01 September 2008
Economic Geology (2008) 103 (6): 1135–1150.
... ; Corfu, 1993 ) is the largest preserved greenstone belt in the world, trending generally east-west across the southern Superior craton. In the east, it is truncated by the ca. 1 Ga Grenville Front tectonic zone, whereas in the west, the Abitibi belt proper is truncated by a major Paleoproterozoic...
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Journal Article
Published: 15 November 2017
Canadian Journal of Earth Sciences (2018) 55 (3): 241–251.
... are developed in the vesicles and matrix. Ar–Ar dating was challenging, but the weighted mean of two plateau ages indicates intrusion and cooling at 591.6 ± 2.5 Ma. The overall characteristics of these dykes suggest that they may be a facies of the much larger Grenville dyke swarm to the west. However...
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Journal Article
Published: 01 April 2007
Bulletin of the Seismological Society of America (2007) 97 (2): 457–473.
..., mapped normal faults bounding the Timiskaming graben were reactivated with a reverse sense of motion ( Bent, 1996a ; Bent et al. , 2002 ). To the south in the lower Great Lakes, seismicity appears to occur preferentially within or near large bodies of water ( Mereu et al. , 2002 ). Recognized areas...
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Journal Article
Published: 01 January 2006
Exploration and Mining Geology (2006) 15 (1-2): 27–43.
... ). The orebody has been interpreted as a V-shaped fold with distinct copper-rich zones along the northern limb near the contact with the Joutel tonalite, and zinc-rich zones to the south ( Boniwell and Dujardin, 1964 ). This metal zonation substantiates geological observations that suggest stratigraphy tops...
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Journal Article
Published: 05 November 2020
Canadian Journal of Earth Sciences (2021) 58 (6): 554–571.
... facies locally, in the contact aureole of syntectonic intrusions ( Daigneault et al. 1990 ). In the Chibougamau area, metamorphism also reaches upper amphibolite to granulite facies closer to the Grenville Province and Opatica Subprovince ( Benn et al. 1992 ; Sawyer and Benn 1993 ; Daigneault...
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Journal Article
Published: 01 July 2015
The Canadian Mineralogist (2015) 53 (4): 767–773.
... Pennsylvania upper mantle Ca-ferrite diamond UHP Grenville Worldwide, most diamond-bearing kimberlites occur in regions where the basement rocks are of Archean age (“Clifford's Rule”, e.g. , Janse 1994 ). There are notable exceptions, however, such as the diamondiferous kimberlites...
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Journal Article
Published: 01 September 2000
The Journal of Geology (2000) 108 (5): 569–583.
.... Granitic Grenville gneisses outcrop within 2 km of the intrusion and are surrounded by the Covey Hill sandstones ( fig. 2 ). However, no contact between the Mont Rigaud Complex and the surrounding Covey Hill Formation has been found, so it is uncertain whether the deposition of the Potsdam Group preceded...
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Journal Article
Published: 03 May 2006
Canadian Journal of Earth Sciences (2006) 43 (4): 421–432.
... the lower structural unit, comprising the Kikwissi orthogneiss suite and the overlying Lac McKillop sequence, as the Kikwissi domain. This forms part of the larger Timiskaming terrane, comprising Archean crust southeast of the Grenville Front. We also propose that the middle slice of the structural stack...
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Journal Article
Journal: Economic Geology
Published: 01 August 2012
Economic Geology (2012) 107 (5): 963–989.
... with NNW- to NNE-striking synvolcanic faults. Fe-Ti-V deposits occur within the Layered zone of the Lac Doré Complex, especially where it thickens in areas of interpreted synmagmatic faults. Subeconomic magmatic Ni-Cu deposits occur at the contacts of mafic-ultramafic or tonalitic intrusions. “Chibougamau...
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Journal Article
Published: 22 July 2022
Canadian Journal of Earth Sciences (2023) 60 (7): 778–801.
... of the formation may contain a few dispersed pebbles making it more difficult to place the formation boundary. The upper contact with strata of the Mississagi Formation is always sharp. Fig. 7. Surface and subsurface distribution of the Pecors Formation. Isopachs at 10 m intervals. Black dots indicate...
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Journal Article
Journal: Economic Geology
Published: 01 September 2009
Economic Geology (2009) 104 (6): 869–879.
... siliciclastic sedimentary rocks that unconformably overlie steeply dipping Archean basement rocks of the Abitibi greenstone belt. Interlayered mafic volcanic and intrusive contacts with the Murray and Creighton granites (Sudbury district) constrain the age of the basal Huronian to 2.49 to 2.45 Ga ( Krogh et al...
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Journal Article
Published: 01 April 2000
The Canadian Mineralogist (2000) 38 (2): 319–344.
... into the Grenville Province ( Bethune 1989 , McGrath et al. 1988 ). Killarney plutons north of the Grenville Front have contact-metamorphosed adjacent Huronian Supergroup rocks up to 550 m distant from pluton margins ( Card 1976 ). The contact aureoles contain chlorite, biotite and andalusite, characteristic...
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Journal Article
Published: 01 October 1979
Bulletin of the Seismological Society of America (1979) 69 (5): 1567–1602.
... from southern New Brunswick to eastern Vermont appears rather uniform with no clear indication that the epicenters are aligned with the structural features. The Appalachian-Grenville contact in northern New York state forms the eastern boundary of the Adirondack outlier of the Canadian shield...
Series: Society of Economic Geologists
Published: 01 January 2017
DOI: 10.5382/Rev.19.01
EISBN: 9781629491172
... they are in contact with younger sedimentary rocks of the Porcupine and Timiskaming assemblages ( Fig. 6d ; Bateman et al., 2008 ; Dinel et al., 2008b ). Fig. 6. Field photographs of volcanic rocks of the Tisdale assemblage. A. Underground exposure of a pillow. The spherulitic border zone of the pillow can...
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