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Challis-Kamloops volcanic belt

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Journal Article
Published: 01 August 1998
Canadian Journal of Earth Sciences (1998) 35 (8): 951–963.
...J Dostal; D A Robichaud; B N Church; P H Reynolds Abstract Eocene volcanic rocks of the Buck Creek basin in central British Columbia are part of the Challis-Kamloops volcanic belt extending from the United States across British Columbia to central Yukon. The volcanic rocks include two units...
Journal Article
Journal: Geosphere
Published: 15 April 2019
Geosphere (2019) 15 (3): 659–681.
.... In this PISI hypothesis, a newly formed, ∼1200-km-diameter Yellowstone mantle plume head rose at ca. 55 Ma beneath western North America, generating Siletzia in situ on the North American margin, as well as generating the ∼1700-km-long Challis-Kamloops volcanic belt ∼600 km to the east of Siletzia...
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Journal Article
Journal: Geology
Published: 01 April 2003
Geology (2003) 31 (4): 351–354.
... for lavas of the Eocene Challis-Kamloops volcanic belt demonstrates a southward trend toward enriched geochemical character. This trend is consistent with a Pacific Northwest position for the slab window; this is supported by the presence of adakites (slab melts) near the Canada–United States border...
FIGURES
Journal Article
Published: 07 February 2005
Canadian Journal of Earth Sciences (2005) 42 (1): 11–24.
... and geochemical data. The Monashee Complex is situated in a former orogenic zone where subduction of oceanic crust below the North American Plate has been inferred to have resulted in uplift and eventual collapse of the complex ( Carr 1995 ). The Eocene ChallisKamloops Volcanic Belt is extensive...
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Series: GSA Field Guides, GSA Field Guides
Published: 01 January 2017
DOI: 10.1130/2017.0049(07)
EISBN: 9780813756493
... Ma exhumation ( Whitney, 1992 ; Gordon et al., 2008 , 2010 ; Kruckenberg et al., 2008 ; Miller et al., 2016 ), and Eocene magmatism in the Challis-Kamloops belt far from the plate boundary. In most areas where flat slab subduction occurs the forearc is uplifted and eroded ( Finzel et al., 2011...
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Journal Article
Published: 05 January 2007
Canadian Journal of Earth Sciences (2006) 43 (11): 1621–1637.
... in southeastern British Columbia and southwestern Alberta (Fig.  1 ) are genetically related ( Goble et al. 1993 ; Peterson et al. 1997 ; Goble et al. 1999 ; Barnes 2002 ). Of these suites, the best known and most studied are the volcanic rocks of the Crowsnest Formation, which are exposed in thrust fault...
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Journal Article
Journal: GSA Bulletin
Published: 01 July 2003
GSA Bulletin (2003) 115 (7): 867–880.
...–Nixon Fork fault; DF—Denali fault; LC-CMF—Lake Clark–Castle Mountain fault; SRF—Shames River fault. Other abbreviations: K—Ketchikan; PR—Prince Rupert; S—Seward; T—Terrace; AV—Absaroka Volcanics; CV—Challis Volcanics; MAP—Montana alkali province; CIC—Colville Igneous Complex; PG—Penticton Group volcanic...
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Image
Figure 1. A: Slab window model and geochemical trends of magmatism in Eocen...
in > Geology
Published: 01 April 2003
Figure 1. A: Slab window model and geochemical trends of magmatism in Eocene Challis-Kamloops volcanic belt. Geometry of Kula-Farallon slab window at 50 and 49 Ma as shown is based on slab dips of 27°, applied to both plates to simplify modeling process. Farallon margin of slab window may have been
Journal Article
Journal: Geosphere
Published: 01 December 2012
Geosphere (2012) 8 (6): 1429–1466.
... and regional geologic context of sedimentary and volcanic rocks flanking the complex. Initial volcanism and plutonism was Eocene age (42–34 Ma), related to a regional southward-younging magmatic event. The development of high-temperature (sillimanite grade) metamorphic fabrics and mineral assemblages...
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Journal Article
Published: 19 December 2003
Canadian Journal of Earth Sciences (2003) 40 (12): 1805–1821.
...George A. Morris; Robert A. Creaser Abstract The early Eocene (57.3–55.4 Ma) Bennett Lake and Mount Skukum Volcanic Complexes lie on the Coast Plutonic Complex and Intermontane Belt boundary of the Canadian Cordillera at the British Columbia – Yukon border, some 200 km east of the current...
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Journal Article
Journal: Geosphere
Published: 01 February 2006
Geosphere (2006) 2 (1): 11–34.
... model, we modified the middle Eocene slab window shape and position from Breitsprecher et al. (2003) to be consistent with the plate motion vectors calculated for this study. This slab window was positioned underneath the Challis-Kamloops volcanic belt to account for anomalous arc, within-plate...
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Journal Article
Published: 08 February 2008
Canadian Journal of Earth Sciences (2008) 45 (1): 69–82.
... . Dostal J. Breitsprecher K. Church B.N. Thorkelson D. Hamilton T.S. 2003 . Eocene melting of Precambrian lithospheric mantle: analcime-bearing volcanic rocks from the ChallisKamloops belt of south central British Columbia . Journal of Volcanology and Geothermal Research , 126...
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Journal Article
Published: 07 May 2001
Canadian Journal of Earth Sciences (2001) 38 (4): 679–696.
... to the Kamloops Group, located to the south, are believed to have a similar origin ( Ewing 1981 a ; Smith 1986 ). However, extensional tectonics are well documented throughout central and south-central British Columbia ( Struik 1993 ), and volcanism of the Penticton Group has also been linked to crustal...
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Journal Article
Published: 24 April 2018
Canadian Journal of Earth Sciences (2018) 55 (8): 923–934.
...–A) volcanic belt, stretching ∼1500 km from central British Columbia southwards to Idaho and Wyoming ( Mathews 1991 ; Breitsprecher 2002 ; Ickert et al. 2009 ). Regional volcanic fields of British Columbia within the K–C–A belt include the Kamloops field, where the McAbee fossil beds are located...
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Journal Article
Journal: Lithosphere
Publisher: GSW
Published: 17 October 2018
Lithosphere (2018) 10 (6): 792–805.
... been proposed to account for the Eocene structural and magmatic evolution of the region. Ewing (1980) attributed the width of the Challis-Kamloops belt to changes in the dip of the subducting Farallon slab. Noting the crustal character of Eocene volcanic rocks in eastern Washington...
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Journal Article
Journal: Geology
Published: 01 April 2009
Geology (2009) 37 (4): 303–306.
...-Kamloops belt, which spans from Wyoming to the Yukon Territory, as well as volcanism in south-central Alaska ( Cole et al., 2006 ), both of which have been linked to Kula-Resurrection ( Cole et al., 2006 ) or Kula-Farallon ( Breitsprecher et al., 2003 ) slab window magmatism. All of these events occurred...
FIGURES
Journal Article
Journal: GSA Bulletin
Published: 01 September 2011
GSA Bulletin (2011) 123 (9-10): 2069–2082.
... , doi: 110.1130/0016-7606(1988)100<1023:PAPSOL>2.3.CO;2 . Dostal J. Breitsprecher K. Church B.N. Thorkelson D. Hamilton T.S. , 2003 , Eocene melting of Precambrian lithospheric mantle: Analcime-bearing volcanic rocks from the ChallisKamloops belt of south central...
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Series: GSA Field Guide
Published: 01 January 2010
DOI: 10.1130/2010.0018(01)
EISBN: 9780813756189
... MP 88.5 Frenchtown pond on right. Excavated in Pleistocene alluvium. View ahead of Ninemile Valley, the continuation of the Missoula graben along the LCL. The ridge to the left is the Ninemile Divide, the hanging wall, tilted NE toward the fault. It is mostly underlain by Belt Supergroup...
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Journal Article
Journal: GSA Bulletin
Published: 17 March 2021
GSA Bulletin (2021)
... in the Kishenehn Basin drainage, likely due to the regional effect of Neogene Basin and Range extension. This study, along with the previous investigation of the Kishenehn Basin by Fan et al. (2017), are the first studies that systematically investigate paleorelief of the orogenic belt by reconstructing...
Image
Figure 1. Paleocene to Oligocene forearc, arc, and backarc magmatism of the...
in > Geosphere
Published: 01 February 2006
and the Challis-Kamloops Belt and other Eocene extended-arc to backarc magmatism in the light-green fields. Within these fields, the intrusions are pink and volcanic rocks are green. Shown in light gray are selected metamorphic core complexes exhumed during Eocene time. MCC—metamorphic core complex. Where plutons