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Chilcotin Group

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Journal Article
Published: 01 April 1983
Canadian Journal of Earth Sciences (1983) 20 (4): 515–524.
...Mary Lou Bevier Abstract Mio-Pliocene Chilcotin Group basalt flows form a 50 000 km 2 lava plateau in south-central British Columbia. Two periods of eruptive activity at 2–3 and 6–10 Ma are indicated by a compilation of available age data, including 10 new K–Ar age determinations, and basalts from...
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Distribution of Neogene <b>Chilcotin</b> <b>Group</b> basalts (grey). Adapted from digita...
Published: 29 June 2011
Fig. 12. Distribution of Neogene Chilcotin Group basalts (grey). Adapted from digital geology by Massey et al. (2005) .
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A glacially abraded outcrop of <b>Chilcotin</b> <b>Group</b> bedrock with glacial striati...
Published: 09 June 2011
Fig. 4. A glacially abraded outcrop of Chilcotin Group bedrock with glacial striations showing a relative chronology of two former ice flows. The oldest ice flow is on the left side of the outcrop in the photo. The flow was parallel to the shovel (267°–087°), but there are no sense indicators
Journal Article
Published: 02 October 2009
Canadian Journal of Earth Sciences (2009) 46 (10): 707–720.
... logs and laboratory samples, except for those from the Neogene Chilcotin Group. Cretaceous sedimentary rocks have velocities of ∼2800–4200 ms –1 . The Eocene Endako and Ootsa Lake groups, which have velocities of ∼3000–4200 ms –1 , are not distinguishable based on velocity. The velocity, the character...
FIGURES | View All (6)
Journal Article
Published: 01 May 1989
Canadian Journal of Earth Sciences (1989) 26 (5): 969–982.
...W. H. Mathews Abstract An extensive but generally thin mantle of basalt flows, the Chilcotin Group, covers much of the Interior Plateau of south-central British Columbia. It provides material for dating and for reconstructing the original form of the paleosurface on which it was deposited. K–Ar...
Journal Article
Published: 07 May 2001
Canadian Journal of Earth Sciences (2001) 38 (4): 697–717.
... are distinguished from the underlying Eocene Endako and stratigraphically higher Neogene Chilcotin groups basaltic andesite lavas within the study area, and from the Chilcotin Group basalt in the type area south of the Anahim volcanic belt, by form, preserved thickness, phenocryst–xenocryst mineralogy, amygdule...
FIGURES | View All (9)
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Chondrite-normalized rare-earth element plots for the Cheslatta Lake suite ...
Published: 07 May 2001
with ( d ) Eocene Endako Group in southern Fort Fraser and northeastern Nechako River map areas ( Anderson et al. 1998 b ) and Chilcotin Group in the southeastern Nechako River map area, and ( e ) selected samples from the southern part of the Chilcotin Group.
Journal Article
Published: 02 June 2011
Canadian Journal of Earth Sciences (2011) 48 (6): 973–986.
... on the localization of thick drift in pre-Late Wisconsinan bedrock paleovalleys, some of which are now buried. Basalt lavas of the Chilcotin Group are restricted to erosional remnants of previously extensive sheets emplaced onto an older peneplain. Our results confirm that the Neogene and Quaternary cover...
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Trace-element multielement diagram (normalized to primitive mantle composit...
Published: 07 May 2001
. Comparisons of CLS compositional range with ( d ) Eocene Endako Group in southern Fort Fraser and northeastern Nechako River map areas (Anderson et al. 1998) and Chilcotin Group in the southeastern Nechako River map area, and ( e ) selected samples from the southern part of the Chilcotin Group.
Journal Article
Published: 22 January 2014
Canadian Journal of Earth Sciences (2014) 51 (4): 327–338.
.... Magnetic remanence is shown to be more important than usually considered in magnetic survey analysis, with Koenigsberger ratios greater than unity in 42% of the samples. A case study of the Chilcotin Group basalts is highlighted, as they form a significant barrier to mineral exploration in central British...
Journal Article
Published: 30 June 2011
Canadian Journal of Earth Sciences (2011) 48 (6): 1000–1020.
... Belt to the northwest and southeast. The pattern of deposition of Neogene volcanic rocks of the Chilcotin Group was in part controlled by the Eocene structural grain, but we find no evidence of Neogene deformation. 27 04 2010 14 03 2011 Published by NRC Research Press 2011...
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Compositional fields for samples from the volcanic and diabasic centres and...
Published: 07 May 2001
Fig. 5. Compositional fields for samples from the volcanic and diabasic centres and associated lavas of the Cheslatta Lake suite and Chilcotin Group in the southeastern Nechako River map area compared with compositions for samples from (data sources given in legend) the southern and central
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Variation of Ni and Cr with MgO for samples from the volcanic and diabasic ...
Published: 07 May 2001
Fig. 6. Variation of Ni and Cr with MgO for samples from the volcanic and diabasic centres and associated lavas of the Cheslatta Lake suite and Chilcotin Group in the Nechako River map area.
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The first vertical derivative of the total magnetic field for a large part ...
Published: 04 July 2011
sedimentary and volcanic rocks; P, Pleistocene alkaline volcanic rocks; Ch, Miocene–Pleistocene Chilcotin Group basaltic volcanic rocks; Cs, Miocene–Pleistocene Chilcotin Group sedimentary rocks; Ka, Eocene Kamloops Group calc-alkaline volcanic rocks; Ku, Eocene Kamloops Group undivided volcanic rocks; Nv
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Photographs of mafic volcanic and diabasic centres and associated lavas of ...
Published: 07 May 2001
Fig. 4. Photographs of mafic volcanic and diabasic centres and associated lavas of the Cheslatta Lake suite and Chilcotin Group in the Nechako River map area. ( a ) View north to Alasla Mountain volcanic centre. Alasla Mountain has about 165 m relief and is one of the largest volcanic plugs
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Distribution of volcanic and diabasic centres and associated lavas of the C...
Published: 07 May 2001
Fig. 2. Distribution of volcanic and diabasic centres and associated lavas of the Cheslatta Lake suite and Chilcotin Group and their association with Eocene and younger faults in the northern Nechako River map area (see Fig.  1 ). The reference localities for the Cheslatta Lake suite at Alasla
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( a ) Total magnetic field profiles across three areas characterized by str...
Published: 04 July 2011
Fig. 8. ( a ) Total magnetic field profiles across three areas characterized by strong positive magnetic signatures (see Fig. 5 for locations of profiles). Profile in area A crosses mainly Nicola Group volcanic rocks, whereas profiles in areas B and C cross exclusively Chilcotin Group basaltic
Journal Article
Published: 04 July 2011
Canadian Journal of Earth Sciences (2011) 48 (6): 1065–1089.
... sedimentary and volcanic rocks; P, Pleistocene alkaline volcanic rocks; Ch, Miocene–Pleistocene Chilcotin Group basaltic volcanic rocks; Cs, Miocene–Pleistocene Chilcotin Group sedimentary rocks; Ka, Eocene Kamloops Group calc-alkaline volcanic rocks; Ku, Eocene Kamloops Group undivided volcanic rocks; Nv...
FIGURES | View All (16)
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Regional compilation of geochemical parameters of the Cheslatta Lake suite ...
Published: 07 May 2001
Fig. 9. Regional compilation of geochemical parameters of the Cheslatta Lake suite (see Fig.  1 ) and southern distribution of Chilcotin Group. The data set for basaltic rocks in south central British Columbia excludes the Anahim volcanic belt (hachured units) and Pleistocene–Recent valley
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Structural and stratigraphic interpretation of a seismic reflection section...
Published: 30 June 2011
, Chilcotin Group; Qal, Quaternary cover. White boxed letters mark features discussed in text. Seismic stratigraphy: yellow, Eocene Endako Group or Ootsa Lake Group; light green, Eocene Ootsa Lake Group volcaniclastic rocks; orange, sedimentary reflections of unknown affinity. Heavy line at the top