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![Map of south-central Trutch study area, northeastern British Columbia, showing distribution of Triassic strata and locations of outcrop sections discussed in this and previous reports. Geological data obtained from a variety of sources (Cecile 1997, 1999; Currie and Cecile, 1999; Lane, 1999; Lane et al., 1999; Legun, 1999a, b). Inset maps at top right show the location of the Trutch (94-G) 1:250,000 map area in northeastern British Columbia and the study area in the south-central portion of the map area. Detailed sections were measured at Pink Mountain, Mount Wright, Mount Wooliever, Sikanni Chief River and Duffield Creek. Other sections where Upper Triassic strata were observed although not described in detail are also shown. Sections of Pelletier (1963; 1964) are denoted by initials and numbers (i.e., P-7). Measured sections are listed in Table 1.]()
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![FIGURE 14. Comparison of trace fossil sizes, Triassic of northeastern British Columbia. Black lines with stars denote traces measured from the Lowermost Triassic (lower Induan–Griesbachian) Montney Formation in the Pedigree-Ring-Kahntah study area. Grey lines with hexagons denote traces from the uppermost Middle Triassic (upper Ladinian) Toad and Liard Formations in the Williston Lake and Trutch regions.]()
![FIGURE 1—Location of study areas, northeastern British Columbia. (A) Map of Canada with location of Williston Lake and Trutch area in northeastern British Columbia. (B) Enlargement of Peace Reach (eastern branch) of Williston Lake with location of Beattie Ledge. The lake was created in 1967 by construction of the W.A.C. Bennett Dam on the Peace River. Seasonal fluctuations in water level along the lake keep outcrop sections clear of debris and vegetation, greatly facilitating ichnological studies. Asterisks show the locations of other Middle Triassic Cruziana sites. (C) Triassic outcrop map of the Trutch area. Asterisks denote locations of Middle Triassic Cruziana sites. (D) Outcrop map of Beattie Ledge showing the former path of the Peace River (black) and the present location of the shore of Williston Lake (gray) at maximum low water (early Spring). Asterisks denote the locations of the Cruziana layer at Beattie Ledge. (E) Structural cross-section (x-z) of the Beattie Ledge outcrop. Figs. 1D and 1E are redrawn after McLearn (1940). Although the Spiriferina-Lingula Zone (McLearn, 1940) is non-diagnostic, the Nathorstites Zone is indicative of Upper Ladinian deposition (Tozer, 1994). Conodonts (Budurovignathus mungoensis) recovered from the Cruziana horizon as part of this study confirm this age assignment (Zonneveld et al., 1997b; Zonneveld and Gingras, 2001)]()
![FIGURE 4—Cruziana seilacheri from the Middle Triassic Toad-Liard interval at Beattie Ledge on Williston Lake (56° 09′ 22” N, 122° 34′ 51” W) and from the NW Besa River locality in the Trutch area (57° 28′ 26” N, 123° 39′ 33” W), northeastern British Columbia, Canada. All scale bars are 1 cm in length. (A) Specimen of Cruziana seilacheri characterized by prominent transverse scratchmarks (RTMP 97.122.04). Specimen collected at Beattie Ledge, Williston Lake, British Columbia. (B) Cruziana seilacheri (C) showing rusophyciform development (widening; R) in the trail (RTMP 97.122.03). This specimen is characterized by both transverse and obliquely-oriented scratchmarks. Specimen collected at Beattie Ledge, Williston Lake, British Columbia. (C) Cruziana seilacheri showing transition from transverse to oblique scratchmarks where the trace fossil passed vertically between bedding planes (RTMP 97.122.05). Specimen collected at Beattie Ledge, Williston Lake, British Columbia. (D) Large specimen of C. seilacheri from the NW Besa River locality showing asymmetrical obliquely oriented scratchmarks (GSC-C416006–01). (E) Cruziana seilacheri from the NW Besa River locality showing transverse scratchmarks (GSC-C416006–02)]()
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![Depositional model for Upper Triassic strata (Charlie Lake, Baldonnel and Pardonet formations) in the Trutch area, northeastern British Columbia, showing standard terminology for siliciclastic shorelines (Reading and Collinson, 1996) and carbonate ramp successions (Burchette and Wright, 1992; Wright and Burchette, 1996; 1998). Bioclastic material in the Charlie Lake, Baldonnel and Pardonet formations originated in three main depositional subenvironments: 1) proximal to distal offshore, 2) offshore transition to lower shoreface, and 3) intertidal mudflats/ sandflats. Adapted in part from Wignall (1993). Note: although illustrated with a barrier separating the shore zone from the lagoon and intertidal/supratidal flats, evidence for a significant barrier system is ambiguous.]()
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![FIGURE 6—Cruziana seilacheri from the Middle Triassic Toad-Liard interval, Beattie Ledge on Williston Lake (56° 09′ 22” N, 122° 52′ 12” W), and NW Besa River (57° 28′ 26” N, 123° 39′ 33” W) in the Trutch area, northeastern British Columbia, Canada. All scale bars are 0.5 cm in length. Scale bars are 1 cm in length. (A, B) Cross-sections through Cruziana seilacheri from Beattie Ledge, northeastern British Columbia. Scale bars are 1 cm in length. Polished vertical cut surfaces through the specimen illustrated in Figure 5D (GSC-C416492–01). Due to similarity between the passive burrow fill and sediment in the overlying sandstone bed, as well as biogenic overprinting by Phycosiphon, the interstratal nature of these specimens is not apparent in some cut sections (A), but is clear in others (B). (C, D) Several specimens of C. seilacheri were observed to connect to vertical shafts, many of which also are characterized by scratch-marked walls. Bottom (C) and top (D) surfaces of the same specimen (GSC-C416006–03) from NW Besa River locality are illustrated. This specimen is 40–50 mm in diameter and comprises a fragment of a vertical shaft ∼35 cm in length]()
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1-20 OF 58 RESULTS FOR
Trutch British Columbia
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1
Journal Article
Stratigraphy, structure and tectonic history of the Pink Mountain Anticline, Trutch (94G) and Halfway River (94B) map areas, northeastern British Columbia Available to Purchase
Publisher: Canadian Society of Petroleum Geologists
Published: 01 March 2005
Bulletin of Canadian Petroleum Geology (2005) 53 (1): 84–98.
... 2005 Stratigraphy, structure and tectonic history of the Pink Mountain Anticline, Trutch (94G) and Halfway River (94B) map areas, northeastern British Columbia, L’anticlinal de Pink Mountain émerge en façade des avant-monts, au nord-est de la Colombie Britannique (57°N, 123°W). La cartographie...
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Journal Article
Sedimentology of the Upper Triassic Charlie Lake, Baldonnel and Pardonet formations from outcrop exposures in the southern Trutch region, northeastern British Columbia Available to Purchase
Publisher: Canadian Society of Petroleum Geologists
Published: 01 December 2004
Bulletin of Canadian Petroleum Geology (2004) 52 (4): 343–375.
... Sedimentology of the Upper Triassic Charlie Lake, Baldonnel and Pardonet formations from outcrop exposures in the southern Trutch region, northeastern British Columbia, Les strates du Triasique supérieur, dans la zone (94 G) NTS de la carte de Trutch, sont présentes dans les formations de Charlie Lake, de...
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Map of south-central Trutch study area, northeastern British Columbia, show... Available to Purchase
in Sedimentology of the Upper Triassic Charlie Lake, Baldonnel and Pardonet formations from outcrop exposures in the southern Trutch region, northeastern British Columbia
> Bulletin of Canadian Petroleum Geology
Published: 01 December 2004
Fig. 2. Map of south-central Trutch study area, northeastern British Columbia, showing distribution of Triassic strata and locations of outcrop sections discussed in this and previous reports. Geological data obtained from a variety of sources ( Cecile 1997 , 1999 ; Currie and Cecile, 1999
Journal Article
Laurentide and montane glaciation along the Rocky Mountain Foothills of northeastern British Columbia Available to Purchase
Journal: Canadian Journal of Earth Sciences
Publisher: Canadian Science Publishing
Published: 18 May 2007
Canadian Journal of Earth Sciences (2007) 44 (4): 445–457.
...Jan M. Bednarski; I. Rod Smith Abstract Mapping the surficial geology of the Trutch map area (NTS 94G) provides new data on the timing of continental and montane glaciations along the Foothills of northeastern British Columbia. Striated surfaces on mountain crests were dated to the Late Wisconsinan...
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Journal Article
Regional subsurface correlations of Albian sequences north of the Peace River in NE British Columbia: northward extent of sandstones of the Falher and Notikewin members along the eastern flank of the foredeep Available to Purchase
Publisher: Canadian Society of Petroleum Geologists
Published: 01 June 2005
Bulletin of Canadian Petroleum Geology (2005) 53 (2): 165–188.
... region and the Trutch region of northwestern Alberta and northeastern British Columbia (Fig. 1 ). Regional stratigraphic correlations, from a grid of over 30 well cross-sections, are based on a total of 3500 wells and were constructed using the iDc Canadian petroleum database. In order to understand...
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Journal Article
MISSISSIPPIAN CORRELATIONS, NORTHEASTERN BRITISH COLUMBIA, AND IMPLICATIONS FOR OIL AND GAS EXPLORATION Available to Purchase
Publisher: Canadian Society of Petroleum Geologists
Published: 01 September 1981
Bulletin of Canadian Petroleum Geology (1981) 29 (3): 378–398.
...James Law ABSTRACT In northeastern British Columbia, the Mississippian carbonate-shale sequence consists, in descending order, of the Debolt, Shunda, Pekisko and Banff Formations. The Debolt is here divided into five members: upper carbonate, upper argillaceous, middle carbonate, lower argillaceous...
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Summary of sedimentary facies characteristics in the upper Charlie Lake, Ba... Available to Purchase
in Sedimentology of the Upper Triassic Charlie Lake, Baldonnel and Pardonet formations from outcrop exposures in the southern Trutch region, northeastern British Columbia
> Bulletin of Canadian Petroleum Geology
Published: 01 December 2004
Table 2. Summary of sedimentary facies characteristics in the upper Charlie Lake, Baldonnel and Pardonet formations in the southwestern Trutch area, northeastern British Columbia.
Image
Summary of sedimentary facies characteristics in the upper Charlie Lake, Ba... Available to Purchase
in Sedimentology of the Upper Triassic Charlie Lake, Baldonnel and Pardonet formations from outcrop exposures in the southern Trutch region, northeastern British Columbia
> Bulletin of Canadian Petroleum Geology
Published: 01 December 2004
Table 2. Summary of sedimentary facies characteristics in the upper Charlie Lake, Baldonnel and Pardonet formations in the southwestern Trutch area, northeastern British Columbia.
Image
FIGURE 14. Comparison of trace fossil sizes, Triassic of northeastern Briti... Available to Purchase
in DIVERSE ICHNOFOSSIL ASSEMBLAGES FOLLOWING THE P-T MASS EXTINCTION, LOWER TRIASSIC, ALBERTA AND BRITISH COLUMBIA, CANADA: EVIDENCE FOR SHALLOW MARINE REFUGIA ON THE NORTHWESTERN COAST OF PANGAEA
> PALAIOS
Published: 01 January 2010
FIGURE 14. Comparison of trace fossil sizes, Triassic of northeastern British Columbia. Black lines with stars denote traces measured from the Lowermost Triassic (lower Induan–Griesbachian) Montney Formation in the Pedigree-Ring-Kahntah study area. Grey lines with hexagons denote traces from
Image
FIGURE 1 —Location of study areas, northeastern British Columbia. (A) Map o... Available to Purchase
in Large, Robust Cruziana from the Middle Triassic of Northeastern British Columbia: Ethologic, Biostratigraphic, and Paleobiologic Significance
> PALAIOS
Published: 01 October 2002
FIGURE 1 —Location of study areas, northeastern British Columbia. (A) Map of Canada with location of Williston Lake and Trutch area in northeastern British Columbia. (B) Enlargement of Peace Reach (eastern branch) of Williston Lake with location of Beattie Ledge. The lake was created in 1967
Image
FIGURE 4 — Cruziana seilacheri from the Middle Triassic Toad-Liard interva... Available to Purchase
in Large, Robust Cruziana from the Middle Triassic of Northeastern British Columbia: Ethologic, Biostratigraphic, and Paleobiologic Significance
> PALAIOS
Published: 01 October 2002
FIGURE 4 — Cruziana seilacheri from the Middle Triassic Toad-Liard interval at Beattie Ledge on Williston Lake (56° 09′ 22” N, 122° 34′ 51” W) and from the NW Besa River locality in the Trutch area (57° 28′ 26” N, 123° 39′ 33” W), northeastern British Columbia, Canada. All scale bars are 1 cm
Journal Article
Quaternary stratigraphy of the Prophet River, northeastern British Columbia This article is one of a selection of papers published in this Special Issue on the theme Geology of northeastern British Columbia and northwestern Alberta: diamonds, shallow gas, gravel, and glaciers . Available to Purchase
Journal: Canadian Journal of Earth Sciences
Publisher: Canadian Science Publishing
Published: 17 June 2008
Canadian Journal of Earth Sciences (2008) 45 (5): 565–575.
... in the Trutch map area, which suggest the CIS extended east onto the Interior Plains of northeast British Columbia in the Late Wisconsinan and by diverted glacial landforms ( Bednarski 2003 a , 2003 b ). During surficial mapping in 2004 ( Trommelen 2006 ), abundant stratigraphic sections were discovered...
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Image
Depositional model for Upper Triassic strata (Charlie Lake, Baldonnel and P... Available to Purchase
in Sedimentology of the Upper Triassic Charlie Lake, Baldonnel and Pardonet formations from outcrop exposures in the southern Trutch region, northeastern British Columbia
> Bulletin of Canadian Petroleum Geology
Published: 01 December 2004
Fig. 16. Depositional model for Upper Triassic strata (Charlie Lake, Baldonnel and Pardonet formations) in the Trutch area, northeastern British Columbia, showing standard terminology for siliciclastic shorelines ( Reading and Collinson, 1996 ) and carbonate ramp successions ( Burchette
Journal Article
Ordovician-Silurian stratigraphic framework, Macdonald Platform to Ospika Embayment transect, northeastern British Columbia Available to Purchase
Publisher: Canadian Society of Petroleum Geologists
Published: 01 December 2001
Bulletin of Canadian Petroleum Geology (2001) 49 (4): 513–535.
... . Basin to platform transition, Lower Paleozoic strata of Ware and Trutch map areas, northeastern British Columbia , Current Research, Part A, Geological Survey of Canada, Paper 79-1A , p. 219 – 226 . Cecile , M.P. and Norford , B.S. 1993 . Ordovician and Silurian . In : Chapter 4...
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Journal Article
Abrupt changes in structural style and associated stratigraphic thickness across cross-strike lineaments, Rocky Mountain Foothills, northeastern British Columbia Available to Purchase
Publisher: Canadian Society of Petroleum Geologists
Published: 01 December 2001
Bulletin of Canadian Petroleum Geology (2001) 49 (4): 497–512.
... . Central Foreland NATMAP: Summary of 1998 fieldwork in Trutch and Toad River map areas, northeastern British Columbia . In : Current Research 1999-E, Geological Survey of Canada , p. 1 – 8 . McMechan , M.E. and Thompson , R.I. 1989 . Structural style and history of the Rocky Mountain...
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Journal Article
Litho- and biofacies analyses of the Buckinghorse Formation: the Albian Western Interior Sea in northeastern British Columbia (Canada) Available to Purchase
Publisher: Canadian Society of Petroleum Geologists
Published: 01 September 2003
Bulletin of Canadian Petroleum Geology (2003) 51 (3): 234–252.
... diagram of major transgressive/regressive sequences of northeastern British Columbia illustrating the cyclicity seen in the Buckinghorse Formation correlated to the Peace River region. West–east subsurface correlations in the Trutch area show relatively even thicknesses of various lower...
FIGURES
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FIGURE 6 — Cruziana seilacheri from the Middle Triassic Toad-Liard interva... Available to Purchase
in Large, Robust Cruziana from the Middle Triassic of Northeastern British Columbia: Ethologic, Biostratigraphic, and Paleobiologic Significance
> PALAIOS
Published: 01 October 2002
FIGURE 6 — Cruziana seilacheri from the Middle Triassic Toad-Liard interval, Beattie Ledge on Williston Lake (56° 09′ 22” N, 122° 52′ 12” W), and NW Besa River (57° 28′ 26” N, 123° 39′ 33” W) in the Trutch area, northeastern British Columbia, Canada. All scale bars are 0.5 cm in length. Scale bars
Journal Article
Large, Robust Cruziana from the Middle Triassic of Northeastern British Columbia: Ethologic, Biostratigraphic, and Paleobiologic Significance Available to Purchase
Journal: PALAIOS
Publisher: SEPM Society for Sedimentary Geology
Published: 01 October 2002
PALAIOS (2002) 17 (5): 435–448.
...FIGURE 1 —Location of study areas, northeastern British Columbia. (A) Map of Canada with location of Williston Lake and Trutch area in northeastern British Columbia. (B) Enlargement of Peace Reach (eastern branch) of Williston Lake with location of Beattie Ledge. The lake was created in 1967...
FIGURES
Journal Article
Upper Cambrian to Lower Silurian stratigraphic framework of platform-to-basin fades, northeastern British Columbia Available to Purchase
Publisher: Canadian Society of Petroleum Geologists
Published: 01 June 2000
Bulletin of Canadian Petroleum Geology (2000) 48 (2): 123–149.
.... The Driftpile and Gataga areas have also been mapped by the British Columbia Geological Survey ( Ferri et al, 1995 , 1996 ). Recently, detailed local mapping has been carried out in the Trutch (94G) map area in conjunction with the Geological Survey of Canada National Mapping Program (NATMAP) Central...
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Journal Article
Cretaceous and Some Triassic Beds of Northeastern British Columbia, Canada Available to Purchase
Journal: AAPG Bulletin
Publisher: American Association of Petroleum Geologists
Published: 01 November 1954
AAPG Bulletin (1954) 38 (11): 2269–2289.
... reconnaissance. The first known occurrence in northeastern British Columbia of the fossil Halilucites sp. is reported from Triassic beds. Identification of fossils was made either by F. H. McLearn of the Geological Survey of Canada, or by C. R. Stelck of the University of Alberta. All figures...
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