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Fraser River valley

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Journal Article
Published: 04 June 2001
Canadian Journal of Earth Sciences (2001) 38 (5): 839–850.
...Olav B. Lian; Stephen R. Hicock Abstract The Fraser River valley near Clinton contains a thick sediment fill that is presently incised down to bedrock. The sequence, approximately 500 m thick, is generally upward fining and consists of up to 100 m of glacigenic debris flow diamicton...
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Journal Article
Published: 01 May 1994
Canadian Journal of Earth Sciences (1994) 31 (5): 798–807.
...David H. Huntley; Bruce E. Broster Abstract In the Gang Ranch area, British Columbia, interaction between the regional physiography and ice flow during the Late Wisconsinan Fraser Glaciation resulted in the formation of a proglacial lake confined to valleys of the Fraser River and its tributaries...
Image
Double‐difference relocations for the Fraser River Valley region shown in Figure 5. The upper row shows standard catalog locations, and the bottom row shows events relocated using hypoDD. Uncertainties are not shown because the LSQR method was used. Dashed lines indicate the profiles of the cross sections, where zero is the point at which the profiles cross. The boxes outline the subset of events selected for more detailed analysis. The thin black lines indicate mapped surface faults.
Published: 01 April 2012
Figure 6. Double‐difference relocations for the Fraser River Valley region shown in Figure  5 . The upper row shows standard catalog locations, and the bottom row shows events relocated using hypoDD. Uncertainties are not shown because the LSQR method was used. Dashed lines indicate the profiles
Image
Seismicity for the Fraser River Valley in southwest British Columbia, 1992–2006. Hypocenters (black dots) were determined using hypoDD. Stations are shaded according to their contribution: black indicates a large number of phases used (>100), white indicates a moderate number (20–100), and gray indicates a small number (<20). Note that some stations used to relocate earthquakes are not shown as they are located outside the region of this map and only contribute a few arrivals.
Published: 01 April 2012
Figure 5. Seismicity for the Fraser River Valley in southwest British Columbia, 1992–2006. Hypocenters (black dots) were determined using hypoDD. Stations are shaded according to their contribution: black indicates a large number of phases used (>100), white indicates a moderate number (20–100
Journal Article
Published: 14 March 2005
Canadian Journal of Earth Sciences (2005) 42 (2): 215–230.
... to the Fraser River valley, contained north-flowing streams from Eocene to early Quaternary time. Other valleys dating back at least to Middle Eocene time include the North Thompson valley south of Clearwater, Thompson valley from Kamloops to Spences Bridge, the valley containing Nicola Lake, Bridge River...
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Journal Article
Published: 01 January 1995
Canadian Journal of Earth Sciences (1995) 32 (1): 65–78.
...Joseph R. Desloges; Robert Gilbert Abstract The postglacial sedimentary environment of Moose Lake was investigated using 3.5 kHz subbottom profiles and cores from the sediment surface. A late phase in the deglaciation of the upper Fraser River valley involved a valley glacier that flowed east...
Journal Article
Journal: Geology
Published: 01 August 1979
Geology (1979) 7 (8): 410–414.
...A. R. Nelson; A. C. Millington; J. T. Andrews; H. Nichols Abstract Moraine and terrace sequences in the upper Fraser River valley indicate four periods of major glacier expansion during Quaternary time. A well-developed soil on the west Tabernash terrace suggests a long period between the two most...
Journal Article
Published: 01 May 1983
Canadian Journal of Earth Sciences (1983) 20 (5): 873–885.
... sediments of Saanich Inlet compare favorably with changes inferred from correlative pollen assemblages previously described from adjacent parts of Vancouver Island and the Fraser River valley. Des limons argileux noirs, varvés, sédimentés dans les eaux marines du bras de mer de Saanich, fournissent...
Image
Detailed map showing Paleocene to Eocene outcrops of the Chuckanut Formation near Bellingham in Washington (bright yellow) and smaller, scattered outcrops of the Canadian Huntingdon Formation in the Fraser River Valley in British Columbia (pale yellow). The small orange-coloured patch north of the Chuckanut Formation is the U.S. “Huntingdon Formation” in the legend (with an American flag) and is considered to be late Eocene or possibly Oligocene (Mustard and Rouse 1994) and should not be confused with the Huntingdon Formation in Canada. Red circled areas in the Fraser River Valley denote the Kanaka Creek fossil plant site (right) in Kanaka Creek Regional Park and other para-contemporaneous fossil plant and palynological sites around English Bay (left); the latter area also includes small Upper Cretaceous outcrops of the Nanaimo Group (brown). Arabic numbers refer to degrees of dip for the bedding at each location. Map created with CorelDraw version X3; original figure by Peter Mustard, used with permission. [Colour online.]
Published: 24 July 2019
Fig. 2. Detailed map showing Paleocene to Eocene outcrops of the Chuckanut Formation near Bellingham in Washington (bright yellow) and smaller, scattered outcrops of the Canadian Huntingdon Formation in the Fraser River Valley in British Columbia (pale yellow). The small orange-coloured patch
Image
Diagrammatic representation of structural and stratigraphic relationships of major rock units along the Fraser River Valley near Quesnel. Dashed lines represent minor faults associated with surface slumping of the Miocene Fraser Bend Formation. Dotted lines indicate uncertain relationships. Redrawn from Hora and Hancock (1994). Not to scale. s.s., sandstone.
Published: 29 May 2017
Fig. 3. Diagrammatic representation of structural and stratigraphic relationships of major rock units along the Fraser River Valley near Quesnel. Dashed lines represent minor faults associated with surface slumping of the Miocene Fraser Bend Formation. Dotted lines indicate uncertain
Image
3D model of the paleo-land surface in the Fraser Valley and Fraser River Delta region prior to delta progradation (i.e., pre-Holocene) based on the thickness of modern sediments. Modified from Ayranci (2022) with data from Hunter and Christian (2001).
Published: 05 July 2024
Fig. 7. 3D model of the paleo-land surface in the Fraser Valley and Fraser River Delta region prior to delta progradation (i.e., pre-Holocene) based on the thickness of modern sediments. Modified from Ayranci (2022) with data from Hunter and Christian (2001) .
Image
CNSN catalog seismicity from 1970–2011, M>1.5, depth <40  km (dots) and mapped faults (thin black lines) (Journeay and Williams 1995) in southwest British Columbia and northwest Washington state. Boxes 1 and 2, respectively, outline the Fraser River Valley and the San Juan Islands regions that are discussed in this study.
Published: 01 April 2012
Figure 2. CNSN catalog seismicity from 1970–2011, M >1.5, depth <40  km (dots) and mapped faults (thin black lines) ( Journeay and Williams 1995 ) in southwest British Columbia and northwest Washington state. Boxes 1 and 2, respectively, outline the Fraser River Valley and the San Juan
Image
P‐wave velocity models used for earthquake relocations in southwest British Columbia and the San Juan Islands. The original model for southwest British Columbia is shown as a dot‐dashed line (Vel03). The Ramachandran model (Ramachandran et al., 2005), shown as a dotted line, is used for the San Juan Islands. The layered Community model used for the streak of seismicity in the Fraser River Valley, shown as a solid line, is based on a gradational model by Molnar (2011), which is shown as a smooth dashed line.
Published: 01 April 2012
, is used for the San Juan Islands. The layered Community model used for the streak of seismicity in the Fraser River Valley, shown as a solid line, is based on a gradational model by Molnar (2011) , which is shown as a smooth dashed line.
Image
Southwest British Columbia and northwest Washington state. The Fraser River Valley (upper) and San Juan Islands (lower) study regions are outlined by boxes. Stations (triangles) include stations from the Canadian National Seismograph Network (CNSN), Portable Observatories for Lithospheric Analysis and Research Investigating Seismicity (POLARIS), and the Pacific Northwest Seismic Network (PNSN). The approximate location of the Cascadia subduction zone plate boundary and depth contours of the Juan de Fuca plate (McCrory et al. 2004) are shown. The Juan de Fuca plate subducts beneath the North American Plate at ∼45  mm/yr (Riddihough, 1984).
Published: 01 April 2012
Figure 1. Southwest British Columbia and northwest Washington state. The Fraser River Valley (upper) and San Juan Islands (lower) study regions are outlined by boxes. Stations (triangles) include stations from the Canadian National Seismograph Network (CNSN), Portable Observatories
Journal Article
Published: 01 May 2001
Canadian Journal of Earth Sciences (2001) 38 (4): 719–731.
... in the glaciation, the drainage was free in easterly draining valleys. Subsequently, the easterly drainage was blocked either locally by sediments and ice or as a result of impoundment of the Fraser River and its tributaries east of the study area. Ice generally moved east and northeast from accumulation zones...
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Series: GSA Field Guide
Published: 01 January 2014
DOI: 10.1130/2014.0038(06)
EISBN: 9780813756387
..., such as the Fraser River ( Andrews et al., 2012 ), forming deep valleys that are filled with thick sequences of glacial sediments (e.g., Eyles and Clague, 1991 ; Huntley and Broster, 1994 ; Lian and Hicock, 2001 ). In some places, bedrock is overlain by glacial sediments with reversed magnetization, or by glacial...
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Journal Article
Journal: Geology
Published: 01 February 2012
Geology (2012) 40 (2): 111–114.
... by the 270-km-long and ≤1000-m-deep bedrock Fraser Canyon between Macalister and Hope ( Fig. 1 ), where it is incised into the southern interior plateaus and oblique to the Coast Mountains. North and south of the Fraser Canyon the river meanders within a broad valley. Hanging tributaries are associated...
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Image
—Showing small valleys in nearshore area directly off mouth of Fraser River. Basin depressions are not clearly established by survey.
Published: 01 August 1962
Fig. 3. —Showing small valleys in nearshore area directly off mouth of Fraser River. Basin depressions are not clearly established by survey.
Journal Article
Published: 01 November 1997
Canadian Journal of Earth Sciences (1997) 34 (11): 1509–1520.
... Sheet occupied much of the study area, blocking southward drainage of Fraser River. Phase II was marked by the deglaciation of uplands and plateaux. Meltwater drainage patterns were controlled by stagnating glaciers confined to valleys. Phase III commenced as remnant ice in the Fraser Valley downwasted...
Journal Article
Published: 27 June 2023
Canadian Journal of Earth Sciences (2023) 60 (11): 1544–1572.
.... , Roberts , N.J. , Miller , B. , Menounos , B. , and Goehring , B. 2020 . A huge flood in the Fraser River valley, British Columbia, near the Pleistocene Termination . Geomorphology , 374 : 107 – 473 . Easterbrook , D.J. , Briggs , N.D. , Westgate , J.A. , and Gorton...
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