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Horn River Group

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Journal Article
Journal: GSA Bulletin
Published: 24 December 2021
GSA Bulletin (2022) 134 (7-8): 2130–2144.
... ). Figure 3. Core log of the Horn River Group from this study includes stratigraphic units, gamma ray log, bulk-rock geochemical analyses, and systems tracts (based on Ayranci et al., 2018b ). Locations of examples in Figure 5 are indicated. Red spots in total organic carbon (TOC) profile...
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First thumbnail for: New insights into organic matter accumulation from...
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Journal Article
Published: 20 December 2019
Journal of the Geological Society (2020) 177 (1): 231.
... Society of London. All rights reserved 2019 © 2019 The Author(s) * Correspondence: [email protected] Figure 3. (a) Geographical spread of the Horn River Group (on NWT side) and Canol Formation (on Yukon side) between 64 and 68°N; crosses are outcrops: (1, Trail River (TR in ( b )); 2...
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First thumbnail for: Erratum for ‘Devonian ( c. 388–375 Ma) <span class...
Journal Article
Published: 02 November 2018
Journal of the Geological Society (2019) 176 (1): 29–45.
... by the Richardson and Selwyn basins is referred to as the Mackenzie Shelf ( Fig. 2 ; Gabrielse & Yorath 1991 ; Cecile & Norford 1993) . It consists of the Early Paleozoic–Middle Devonian (Eifelian) platform dominated by shallow-water carbonates, the Horn River Group, and the foreland basin fill...
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Journal Article
Published: 02 January 2018
Journal of Sedimentary Research (2018) 88 (1): 1–23.
...Korhan Ayranci; Nicholas B. Harris; Tian Dong ABSTRACT The Middle and Upper Devonian Horn River Group in northeastern British Columbia, Canada, consists predominantly of organic-rich mudstones that are typically described as black shales. This stratigraphic unit has seen substantial exploration...
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Journal Article
Journal: GSA Bulletin
Published: 22 November 2017
GSA Bulletin (2018) 130 (5-6): 859–880.
... insights into the effects of relative sea-level changes on redox conditions, productivity, detrital flux, and organic matter enrichment patterns and their geographic variation. Sequence stratigraphic analysis documents three third-order transgressive-regressive cycles within the Horn River Group. Organic...
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Journal Article
Journal: AAPG Bulletin
Published: 01 February 2017
AAPG Bulletin (2017) 101 (2): 177–204.
... and Upper Devonian Horn River Group shale, including the Evie and Otter Park Members and the Muskwa Formation, applying core hardness measurements and log-derived Young’s modulus, Poisson’s ratio, and brittleness and relating these to shale composition and texture. Clay content is the most significant...
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Journal Article
Published: 01 December 2016
Canadian Journal of Earth Sciences (2017) 54 (4): 409–429.
...Pavel Kabanov; Sofie A. Gouwy Abstract This study proposes six new lithostratigraphic units and redefines two others within the Horn River Group (HRG), a shale-dominated succession recently prospected for shale hydrocarbons. Its lower Hare Indian Formation rests on a drowning unconformity...
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Journal Article
Published: 01 March 2016
Bulletin of Canadian Petroleum Geology (2016) 64 (1): 67–98.
...Leanne J. Pyle; Len P. Gal Abstract A stratigraphically complete section, exposed along a tributary to the Mountain River in the Northwest Territories, provides a reference section for the Devonian Horn River Group (Hare Indian, Ramparts, and Canol formations). Detailed whole rock geochemical data...
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Journal Article
Journal: AAPG Bulletin
Published: 01 May 1951
AAPG Bulletin (1951) 35 (5): 1107.
...M. E Denson, Jr.; S. Morrisey Norman Abstract Studies of both surface and subsurface sections of the Madison group in the Big Horn and Wind River basins, Wyoming, indicate that persistent units can be recognized by means of field data and insoluble residue analysis. From top to base the major units...
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Core log of the Horn River Group from this study includes stratigraphic units, gamma ray log, bulk-rock geochemical analyses, and systems tracts (based on Ayranci et al., 2018b). Locations of examples in Figure 5 are indicated. Red spots in total organic carbon (TOC) profile are the samples analyzed by energy-dispersive X-ray fluorescence (EDXRF) and hyperspectral imagery. HST—highstand systems tract; TST—transgressive systems tract; LST—lowstand systems tract; FSST—falling stage systems tract; Sibio—biogenic silica.
Published: 24 December 2021
Figure 3. Core log of the Horn River Group from this study includes stratigraphic units, gamma ray log, bulk-rock geochemical analyses, and systems tracts (based on Ayranci et al., 2018b ). Locations of examples in Figure 5 are indicated. Red spots in total organic carbon (TOC) profile
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Schematic stratigraphic column of the Horn River Group and formations stratigraphically above and below, spanning the Givetian and Frasnian of the Devonian in the study area of the Central Mackenzie Valley and the Mackenzie Mountains in Northwest Territories, Canada. Modified from Pyle and Gal (2016), Kabanov and Gouwy (2017).
Published: 12 November 2021
Fig. 1. Schematic stratigraphic column of the Horn River Group and formations stratigraphically above and below, spanning the Givetian and Frasnian of the Devonian in the study area of the Central Mackenzie Valley and the Mackenzie Mountains in Northwest Territories, Canada. Modified from Pyle
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Geographic spread of the Horn River Group between 64°N and 68°N (A) and the cross-section illustrating lateral facies changes (B); modified from Kabanov (2019). The cross-section is traced on (A) with bold black line. Position of the Powell Creek section (PC) relative to the carbonate bank is indicated by vertical line on (B). Supplementary reference sections of the Canol Formation on (A): (1) Mountain River west tributary and (2) Prohibition Creek. Sections used in the cross-section (B), from W to E: (TR) is Trail River outcrop; other sections are wells: Cranswick YT A-42, Cranswick A-22, S. Ramparts I-77, N. Ramparts A-59, Ramparts River F-46, Hume River I-66, Hume River D-53, Carcajou L-24, Maida Creek F-57, Hoosier F-27, NWB is Norman Wells bank with hundreds of wells, Little Bear N-09, Bluefish A-49, and Bracket Lake C-21. Givetian-Frasnian paleogeographic zones: SOB – southern off-bank; BAT – bank and through; WOB – western off-bank; ERT – east Richardsons – western Peel. Lithostratigraphic members: (KSM) Kee Scarp Member; (lrm) lower Ramparts informal member; (fc) Francis Creek, (pc) Prohibition Creek, (vc) Vermillion Creek, (dc) Dodo Canyon, (ml) Mirror Lake, and (lc) Loon Creek. NRTF is Norman Range thrust fault (other tectonic elements are not shown).
Published: 01 December 2020
Figure 2. Geographic spread of the Horn River Group between 64°N and 68°N (A) and the cross-section illustrating lateral facies changes (B); modified from Kabanov ( 2019 ). The cross-section is traced on (A) with bold black line. Position of the Powell Creek section (PC) relative to the carbonate
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Al/K cross-plot for mudrocks of the Horn River Group and basal Imperial Formation, ICP elemental data in wt.% (data access through doi:10.6084/m9.figshare.c.4212428).
Published: 01 December 2020
Figure 3. Al/K cross-plot for mudrocks of the Horn River Group and basal Imperial Formation, ICP elemental data in wt.% (data access through doi:10.6084/m9.figshare.c.4212428).
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(a) Geographical spread of the Horn River Group (on NWT side) and Canol Formation (on Yukon side) between 64 and 68°N; crosses are outcrops: (1, Trail River (TR in (b)); 2, Rumbly Creek; 3, Turnabout Creek; 4, Powell Creek, and 5, Prohibition Creek); palaeogeographic areas: WOB, Western off-bank area; BAT, bank-and-trough area; SOB, southern off-bank area. (b) Cross-section (black line (a)) levelled at the top of Hume Formation; wells from west to east: Cranswick YT A-42, Cranswick A-22, S. Ramparts I-77, N. Ramparts A-59, Ramparts River F-46, Hume River I-66, Hume River D-53, Carcajou L-24, Maida Creek F-57, Hoosier F-27, NWB is Norman Wells oilfield, Little Bear N-09, Bluefish A-49, and Bracket Lake C-21. Stratigraphic members in SOB: (fc) Francis Creek, (ps) Prohibition Creek, (vc) Vermillion Creek; (dc) Dodo Canyon, (ml) Mirror Lake, and (lc) Loon Creek. NRTF is Norman Range thrust fault (other tectonic elements are not shown). The Canol Formation in WOB area is provisionally subdivided into (1) lower, (2) middle, and (3) lower traceable units or information members (Cross-section B-B’ in supplementary material). (PC) on (b) is projection of the Powell Creek outcrop (stratotype of Canol Formation).
Published: 20 December 2019
Figure 3. (a) Geographical spread of the Horn River Group (on NWT side) and Canol Formation (on Yukon side) between 64 and 68°N; crosses are outcrops: (1, Trail River (TR in ( b )); 2, Rumbly Creek; 3, Turnabout Creek; 4, Powell Creek, and 5, Prohibition Creek); palaeogeographic areas: WOB
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(a) Geographical spread of the Horn River Group (on NWT side) and Canol Formation (on Yukon side) between 64 and 68°N; crosses are outcrops (1, Trail River (TR); 2, Rumbly Creek; 3, Powell Creek); diamonds are wells (O06 is Loon Creek O-06; N09 is Little Bear N-09). Palaeogeographical areas: WOB, western off-bank area; BAT, bank-and-trough area; SOB, southern off-bank area. (b) Cross-section (black line in (a)); top of Hume Formation as datum; wells from west to east: Cranswick YT A-42, Cranswick A-22, S. Ramparts I-77, N. Ramparts A-59, Ramparts River F-46, Hume River I-66, Hume River D-53, Carcajou L-24, Maida Creek F-57, Hoosier F-27, NWB is Norman Wells oilfield, Little Bear N-09, Bluefish A-49, and Bracket Lake C-21. Stratigraphic members in SOB: (fc) Francis Creek, (pc) Prohibition Creek, (vc) Vermillion Creek; (dc) Dodo Canyon, (ml) Mirror Lake, and (lc) Loon Creek. NRTF is Norman Range thrust fault (other tectonic elements are not shown). The Canol Formation in WOB area is provisionally subdivided into (1) lower, (2) middle and (3) upper traceable units or information members (cross-section B–B' in supplementary material).
Published: 02 November 2018
Fig. 3. ( a ) Geographical spread of the Horn River Group (on NWT side) and Canol Formation (on Yukon side) between 64 and 68°N; crosses are outcrops (1, Trail River (TR); 2, Rumbly Creek; 3, Powell Creek); diamonds are wells (O06 is Loon Creek O-06; N09 is Little Bear N-09). Palaeogeographical
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P–TOC stratigraphy of Horn River Group in three sections shown as LOESS regression curves with α-tension 4%. The Trail River lithology is interpreted from Fraser &amp; Hutchison (2017); subdivision is retained from the same source. RCTZ (here and in Figs. 7 &amp; 8), Road River - Canol transitional zone (Fraser &amp; Hutchison, 2017). (See Fig. 4 for colour-coded lithology, and supplementary material for data scatterplots.)
Published: 02 November 2018
Fig. 6. P–TOC stratigraphy of Horn River Group in three sections shown as LOESS regression curves with α -tension 4%. The Trail River lithology is interpreted from Fraser & Hutchison (2017) ; subdivision is retained from the same source. RCTZ (here and in Figs. 7 & 8 ), Road River
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Isopach map of the preserved Horn River Group across the northern mainland. In the south, grey shales and argillaceous limestones of the Horn River Group (formation) form a northward and westward extending, irregular sediment wedge, 40 to over 200 metres thick, and which encases Horn Plateau reefs in front of the Presqu’ile Barrier. Farther north, age-equivalent shales and argillaceous slope-deposited limestones of the Hare Indian Formation form a westward-thinning wedge beneath the Ramparts Formation reefal limestones. Hare Indian thicknesses range from less than 60 metres to over 200 metres near Fort Good Hope and Tulita.
Published: 01 September 2018
Figure 21. Isopach map of the preserved Horn River Group across the northern mainland. In the south, grey shales and argillaceous limestones of the Horn River Group (formation) form a northward and westward extending, irregular sediment wedge, 40 to over 200 metres thick, and which encases Horn
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Published: 02 January 2018
Table 2.— Summary of mudstone lithofacies in the Horn River Group.
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A generalized depositional model for the Horn River Group showing six-stage hypothetical relative sea-level fluctuations and depositional conditions and processes. A) This stage mainly characterizes the Evie Member. Depositional conditions were mainly anoxic to dysoxic with low to moderate energy conditions. The dominant depositional process was interpreted as suspension settling of mud and hyperpycnal deposits. B–E) These four stages represent the variations in the Otter Park Member. With the exception of the deepest part of the basin (e.g., C4), depositional conditions were dominantly oxygenated, as indicated by intense biogenic activity. In Stage C, the depositional conditions became anoxic to dysoxic mainly because of the dominant anoxic lithofacies. Stage D is probably the most energetic stage. The depositional conditions were likely to be oxygenated to dysoxic, but the deepest part of the basin was characterized by anoxic conditions. The dominant depositional processes were controlled by deep-water currents, including contour currents, hyperpycnal flows, and possible tidal currents. The final stage of the Otter Park Member (Stage E) shows abundant event beds; therefore, it is interpreted to be characterized by oxygenated to dysoxic and high energy conditions. The main depositional processes were probably hyperconcentrated flow, such as hyperpycnal flows and turbidites. Stage F, representing the Muskwa Formation, shows characteristics similar to those of Stage A. Depositional conditions were dominantly anoxic to dysoxic. The main depositional process for mud was suspension settling under very calm conditions. The sketches are not drawn in scale. Sl, sea level.
Published: 02 January 2018
Fig. 14.— A generalized depositional model for the Horn River Group showing six-stage hypothetical relative sea-level fluctuations and depositional conditions and processes. A) This stage mainly characterizes the Evie Member. Depositional conditions were mainly anoxic to dysoxic with low
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Published: 22 November 2017
TABLE 2. MINERALOGICAL COMPOSITION OF 10 SAMPLES FROM HORN RIVER GROUP SHALE