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Kootenay Group

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Journal Article
Published: 01 September 1987
The Canadian Mineralogist (1987) 25 (3): 555–565.
Journal Article
Published: 01 June 1979
Bulletin of Canadian Petroleum Geology (1979) 27 (2): 183–208.
... be subdivided into three formations, which in ascending order are Morrissey (new), Mist Mountain (new), and Elk. Accordingly, it is proposed to elevate the former Kootenay Formation to group status, and at the same time re-establish the original definition and recognition of the Kootenay by including some older...
Journal Article
Published: 01 June 1992
Canadian Journal of Earth Sciences (1992) 29 (6): 1305–1319.
...Moira T. Smith; George E. Gehrels Abstract The Lardeau Group is a heterogeneous assemblage of lower Paleozoic eugeoclinal strata present in the Kootenay Arc in southeastern British Columbia. It is in fault contact with lower Paleozoic miogeoclinal strata for all or some of its length along...
Journal Article
Journal: GSA Bulletin
Published: 01 May 2005
GSA Bulletin (2005) 117 (5-6): 747–763.
... comprise three major pulses of sediment delivery: (1) upper Fernie Formation–Kootenay Group (154–142 Ma), (2) Blairmore Group (115–103 Ma), and (3) Milk River Group–Porcupine Hills Formation (78–58 Ma). Nd isotope data are dominated by ϵ Nd values of −7 to −12, interpreted to represent a well-mixed...
FIGURES | View All (14)
Journal Article
Journal: AAPG Bulletin
Published: 01 May 1982
AAPG Bulletin (1982) 66 (5): 579–580.
... of the southern Alberta plains. This name is now restricted to strata occurring north and east of the Sweetgrass arch area which resemble the type Mannville. The Kootenai Formation (Group?) nomenclature, formerly used in Montana, is discarded because of continued confusion with the older, formally defined...
Journal Article
Published: 01 March 1999
Bulletin of Canadian Petroleum Geology (1999) 47 (1): 1–18.
...Douglas J. Cant; Glen S. Stockmal RÉSUMÉ La coupe du Jurassique, de la partie supérieure de la Formation de Fernie et de la partie inférieure du Groupe de Kootenay, exposée le long de coupes de route près de Banff en Alberta, jadis connue sous le nom de la coupe “Banff Traffic Circle”, est...
Series: AAPG Memoir
Published: 01 January 1992
DOI: 10.1306/M55563C5
EISBN: 9781629811093
.... The ages of the six clastic wedges recognized (Fernie and Kootenay groups; Mannville Group; upper Fort St. John Group and Dunvegan Formation; Smoky Group and Belly River Formation; Edmonton Group; Paskapoo Formation—and their lateral equivalents) are compared with the times of accretion of Cordilleran...
Journal Article
Published: 01 June 1982
Bulletin of Canadian Petroleum Geology (1982) 30 (2): 112–139.
... of the Kootenay Group, whereas coals of the Peace River Coalfield were obtained from the Gorman Creek and Bickford Formations of the Minnes Group and from the Gething Formation of the Bullhead Group. Rank, determined by vitrinite reflectance measurements, ranges from subbituminous C in the Crowsnest Coalfield...
Journal Article
Published: 01 June 1991
Bulletin of Canadian Petroleum Geology (1991) 39 (2): 215.
... in the front ranges of the Rocky Mountains and have been mined since the 19th century. Rock bursts, methane explosions and gas production have been a problem to the point of closing down some collieries. The Jurassic–Cretaceous Kootenay Group contains the continental/deltaic coal-bearing sequences...
Image
Situation and geological settings of the Frank Slide area. (A) View of the scar and surface deposit of the 1903 event. (B) Stereographic projection of the main discontinuity sets observed in the western limb of the Turtle Mountain anticline in lower-hemisphere, equal-area (for data, see Table 1). (C) Cross section through the Frank Slide scar (modified after Pedrazzini et al., 2011): 1, 2—Palliser and Banff Formation; 3—Livingstone Formation; 4—Mount Head Formation; 6—Fernie Formation; 7—Kootenay Group; 8—Blairmore group; 8—Kootenay Group; 9—Blairmore group. (D) Histogram of the GSI (Geological Strength Index) estimates (Hoek and Brown, 1997; Cai et al., 2004) for the different geological formations affected by the Frank Slide (modified after Humair, 2011; Pedrazzini et al., 2011).
Published: 01 January 2016
Table 1 ). (C) Cross section through the Frank Slide scar (modified after Pedrazzini et al., 2011 ): 1, 2—Palliser and Banff Formation; 3—Livingstone Formation; 4—Mount Head Formation; 6—Fernie Formation; 7—Kootenay Group; 8—Blairmore group; 8—Kootenay Group; 9—Blairmore group. (D) Histogram of the GSI
Image
—A panoramic view looking southeast at the ridge along which cross section CC′ (Figure 6) was drawn. The geology, from northeast to southwest, includes the Central thrust (CT); the Highwood syncline (HS), visible in the Cretaceous Blairmore and Jurassic-Cretaceous Kootenay groups, with shallow dipping thrust faults (t) in its northeast limb and megascopic folds (outlined) developed in its southwest limb; the steep northeast-dipping Back thrust (BT) that places strata of the Kootenay Group onto folded rocks of the Blairmore Group [the BT truncates the folds (outlined) in its footwall]; and the anticline (in the direct footwall of the Misty thrust) that is outlined by the relatively competent Morrissey Formation sandstone with a faulted (t) northeast limb. Field of view is about 2 km across.
Published: 01 June 1992
Figure 5 —A panoramic view looking southeast at the ridge along which cross section CC′ ( Figure 6 ) was drawn. The geology, from northeast to southwest, includes the Central thrust (CT); the Highwood syncline (HS), visible in the Cretaceous Blairmore and Jurassic-Cretaceous Kootenay groups
Image
—View of the Central thrust (CT), looking southwest, with a relatively homoclinal succession of the Mist Mountain Formation (Kootenay Group) in its hanging wall, and cutting off an overturned fold of the Mist Mountain Formation in its footwall. Note the minor folds in the west limb (white arrows). Field of view is about 600 m across.
Published: 01 June 1992
Figure 12 —View of the Central thrust (CT), looking southwest, with a relatively homoclinal succession of the Mist Mountain Formation (Kootenay Group) in its hanging wall, and cutting off an overturned fold of the Mist Mountain Formation in its footwall. Note the minor folds in the west limb
Image
Figure 3. Values of ϵNd at time of sedimentation plotted against stratigraphic age. The evolution of possible sources for sedimentary materials are from Boghossian et al. (1996), Frost and Winston (1987), and the references cited in the text for Cordilleran Coast Belt isotope geochemistry. Vertical fields distinguish the three main pulses of coarser clastic sediment in the proximal foreland that are highlighted in this paper and elsewhere: 1—Fernie Formation-Kootenay Group; 2—Blairmore Group; 3—Milk River Group through Porcupine Hills Formation.
Published: 01 May 2005
. Vertical fields distinguish the three main pulses of coarser clastic sediment in the proximal foreland that are highlighted in this paper and elsewhere: 1—Fernie Formation-Kootenay Group; 2—Blairmore Group; 3—Milk River Group through Porcupine Hills Formation.
Image
Figure 2. Stratigraphic column for foreland strata in southwestern Alberta. Modified from Stockmal et al. (2001) with local modifications of the Kootenay Group (Gibson, 1985), Blairmore Group (D. Leckie, 2001, personal commun.), and Milk River and Belly River groups (Stockmal, 1995). LCM and BCM are Lynx Creek and Bruin Creek members, respectively, of the Mill Creek Formation. Pulse 3 includes coarse clastic strata above the Belly River Group. The Alberta Group, which is dominated by shales and mudstones, is considered part of pulse 3. Crk.—Creek; Fm.—Formation; Mbr.—Member; Gp.—Group.
Published: 01 May 2005
Figure 2. Stratigraphic column for foreland strata in southwestern Alberta. Modified from Stockmal et al. (2001) with local modifications of the Kootenay Group ( Gibson, 1985 ), Blairmore Group (D. Leckie, 2001 , personal commun.), and Milk River and Belly River groups ( Stockmal, 1995 ). LCM
Image
—Dip-separation diagram for the Highwood-Elbow area, illustrating the inverse relationship in displacement between the Misty (MT) and Coleman (CT) thrusts indicative of displacement transfer. Decreasing displacement on the Central (CtT) and Back (BT) thrusts toward the southeast is balanced by increased amounts of folding apparent in the Blairmore and Kootenay Group strata, shown by cross hatched area (also see Figure 6).
Published: 01 June 1992
is balanced by increased amounts of folding apparent in the Blairmore and Kootenay Group strata, shown by cross hatched area (also see Figure 6 ).
Journal Article
Published: 01 June 1992
Canadian Journal of Earth Sciences (1992) 29 (6): 1320–1329.
...Moira T. Smith; George E. Gehrels Abstract The Lardeau Group is a heterogeneous assemblage of lower Paleozoic, outer continental margin strata present in the Kootenay Arc in southeastern British Columbia. From east to west, structurally lowest to highest, and what has been previously interpreted...
Image
Structural cross-sections illustrating changes in structural style from south (Maycroft section, bottom) to north (Turner Valley section, top) Cross-sections are aligned along structural strike. locations of lines indicated in Figures 5, 8, 14, and 22. Mississippian and Milk River Group strata are shown shared in brick pattern and uniform gray, respectively, to serve as visual markers. The Longview Deformation Zone is shown by the inclined, short-dashed pattern in the Turner Valley cross-sections only. Abbreviations: OT – Outwest Thrust, C – Cambrian, D – Devonian, M – Mississippian, JKk+jf – Juro-Cretaceous kootenay Group and Jurassic Fernie Formation, kbl – Cretaceous Blairmore Group, kbk – Cretaceous Blackstone Formation, Kca – Cretaceous Cardium Formation, kwp – Cretaceous Wapiabi Fromation, Kmr – Cretaceous Milk River Group, kbr – Cretaceous Belly River Group, kbp – Cretaceous Bearpaw Formation, ksmr – Cretaceous St. Mary River Formation, KTwc – Cretaceous-Tertiary Willow Creek Formation, Tph – Tertiary Porcupine Hills Formation, Tpa – Tertiary Paskapoo Formation, see text for discussion.
Published: 01 December 2001
– Mississippian, JKk+jf – Juro-Cretaceous kootenay Group and Jurassic Fernie Formation, kbl – Cretaceous Blairmore Group, kbk – Cretaceous Blackstone Formation, Kca – Cretaceous Cardium Formation, kwp – Cretaceous Wapiabi Fromation, Kmr – Cretaceous Milk River Group, kbr – Cretaceous Belly River Group, kbp
Image
Comparison between the shale-cored anticlines as seen in seismic (a) with two field examples (b and c). The example in (a) is simplified from Figure 9. Seismic data are proprietary to PGS. (b) Example of a shale core fold with some preserved competent layers showing disharmonic parasitic folds. Image of the northern slope of the Midterhukfjellet peak (Midterhuken Mountains, southwest Spitsbergen, in Svalbard, Norway), kindly provided by Ó. Ingólfsson (image taken in 2004). A more detailed interpretation of this structure, involving a Permian-to-Jurassic thrusted and folded sequence and shale detachment across the fold core, can be found in Maher et al. (1986) and Horota et al. (2023). Abbreviations: 1 = the Midterhukbreen detachment fault zone; J = the Middle Jurassic to the Lower Cretaceous sequences (the Agardhfjellet Formation); MTr = the Middle Triassic (the Bravaisberget Formation); UTr = the Upper Triassic (the Kapp Toscana Group). (c) Detached lift-off anticline cored by bituminous coal (Mist Mountain Formation, MM) and congruently folding an alternating sequence of sandstones and shales (the Elk Formation equivalent rocks, ME) in the Grassy Mountain (the Big Show, near Crowsnest Pass, Alberta, Canada). Image taken by Keith McClary (in 2008). Our interpretation takes into account additional information provided by Willem Langenberg. ME and MM are part of the Kootenay Group (the latest Jurassic to the earliest Lower Cretaceous).
Published: 22 October 2024
Show, near Crowsnest Pass, Alberta, Canada). Image taken by Keith McClary (in 2008). Our interpretation takes into account additional information provided by Willem Langenberg. ME and MM are part of the Kootenay Group (the latest Jurassic to the earliest Lower Cretaceous).
Series: GSA Special Papers
Published: 01 January 1968
DOI: 10.1130/SPE99-p1
... the Kootenay arc with some confidence on a lithologic basis. The overlying Lardeau Group is somewhat more heterogeneous, and regional correlation less certain as the result of: (1) structural complications unresolved by present incomplete regional mapping, (2) possible sedimentary facies changes across...
Journal Article
Journal: AAPG Bulletin
Published: 01 June 1992
AAPG Bulletin (1992) 76 (6): 828–839.
...Figure 5 —A panoramic view looking southeast at the ridge along which cross section CC′ ( Figure 6 ) was drawn. The geology, from northeast to southwest, includes the Central thrust (CT); the Highwood syncline (HS), visible in the Cretaceous Blairmore and Jurassic-Cretaceous Kootenay groups...
FIGURES | View All (13)