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Schematic Cross Sections Beaufort Sea - Mackenzie Delta: Subsiding Basin West Sverdrup Basin: Anticlinal/Stratigraphic Play - Hecla

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Schematic Cross Sections Beaufort Sea - Mackenzie Delta: Subsiding Basin West Sverdrup Basin: Anticlinal/Stratigraphic Play - Hecla Schematic Cross Sections Beaufort Sea - Mackenzie Delta: Subsiding Basin West Sverdrup Basin: Anticlinal/Stratigraphic Play - Hecla NW (Beaufort Sea) (Tuktoyaktuk Peninsula) SE S0 N 0 Iperk Sequence lower Cretaceous strata Tarsiut - Amauligak 1 Fault Zone Mackenzie Bay Sequence lower Cretaceous unconformity Akpak Sequence Eskimo Lakes Fault Zone Amerk Richards Sequence Depth (km) Play 2 Kugmallit Sequence 1 Amauligak upper King Christian Mackenzie Bay Play Sequence Mayogiak Water 3 Play lower King Christian Richards Sequence Richards Kugmallit Sequence Depth (km) 4 pre-Mesozoic unconformity Triassic strata Reindeer Supersequence & Fish River Sequence Paleozoic & older strata 2 Paleozoic & older strata 5 In response to extension, normal faults initiated onshore and propagated out to the Beaufort Sea. Rapid rates of Beach bar sandstones of the upper King Christian Formation are gently folded and surrounded by shales that provide a trap- sedimentation led to increasingly large displacements basinward. Tilted listric fault blocks provide the primary trapping ping seal. The structure results from a combination of early extensional tectonics followed by late Cretaceous compression. structure for hydrocarbons. (After Dixon, J. et al., 1992. AAPG Bull., v. 76, n. 6.) (After Meneley, R.A., 1986. Canada, East Coast and Arctic Basins, in: Future Petroleum Provinces of the World, Halbouty, M.T. (ed.), AAPG Memoir 40.) Peel Plateau & Plain: Conceptual Stratigraphic Plays Minto Colville Hills: Reactivated Fault Play - Cambrian Strata W E Arch W E Grandview Hills Peel Early Cretaceous strata (Arctic Red & Trevor) Mackenzie 0 River River 0 0 Ramparts Tuttle Arnica / Imperial Landry / Franklin Mountain Bear Rock and younger 1 Franklin Mountain Canol / Hare Indian 0.5 and younger Brock Inlier Franklin Saline River Depth (km) Mountain Depth (km) Mount Kindle Hume Depth (km) 2 Mount Clark & Saline River Arnica / Landry Delorme Gp. Mount Cap 1.0 Mount Cap Mount Kindle / Saline River Mount Cap Mount Cap Franklin Mountain 1.5 Saline Saline River 3 River ? 1.5 Mount Clark Mount Clark ? Precambrian Proterozoic sedimentaryProterozoic Mount Clark Mount Clark conceptual oil play stratasedimentary 4 strata conceptual gas play A westward thickening wedge of platformal carbonate and siliciclastic rocks may host economic oil and gas. Conceptual Readjustments of deep-seated Proterozoic faults during the Laramide Orogeny locally created anticlines and fault- plays occur throughout the section. Several gas shows have been found, including a major show in fractured Canol bounded traps within overlying Cambrian strata. (After Price, P.R., and Enachescu, M.E., 2009. Yellowknife Geoscience Forum Formation shale in the northeastern Peel Plain. (After Morrell, G.R. (ed.), 1995. Petroleum Exploration in Northern Canada, INAC.) Abstracts.) Norman Wells: Reefal Oil Play - Kee Scarp Cameron Hills: Horst & Graben Play NW SE NW Mackenzie River SE 0 0 W post - Muskwa Muskwa E 1.3 Imperial Slave Point Slave Point Canol Canadian .5 Shield Depth (km) Watt Mountain Muskeg Kee Scarp Reef Depth (km) Sulphur Point allochthonous Sulphur Point reef debris Ramparts 1 1.4 Keg River reef platform Keg River ‘Keg River Platform’ Hare Indian Bluefish Member ‘Keg River Platform’ Chinchaga Chinchaga Basal Clastics Basal Clastics Hume Precambrian The Kee Scarp Reef of Middle Devonian age grew in response to rising sea level and rests on a widespread limestone Reactivated horsts and grabens provide trapping structures for natural gas. Faults through the Middle Devonian section platform. Shales of the Canol Formation are source rocks capped by Imperial Formation sandstones and shales. Regional Map of Basins and Physiographic Regions provide conduits for porosity-enhancing formation waters. Some drape above the Slave Point Formation is suggested by dip is four degrees to the west. (After Yose, L.A. et al., 2001. Bull. CPG, v. 49, n. 3.) seismic data. (Janicki, E.P., 2002. pers. comm.; Gal, L.P. and Jones, A.L., 2003. NWT Open File 2003-03.) Liard Plateau: Thrust Fault Play - Pointed Mountain Trout Lake Area: Slave Point Edge W E NW SE Pointed Mountain 0 Anticline 0 Fort Simpson Kotaneelee Syncline Liard Muskwa 2 Mattson Syncline Fort St. John Group Depth (km) Presqu’ile dolomite Fort St. John Group Slave Point Fantasque Cross-section lithologies Horn River (chert) Watt Mountain Flett shale sandstone & shale gas Sulphur Point Depth (km) salt/anhydrite/ 1 Mattson organic-rich shale anhydritic dolostone oil Horn sandstone limestone water 2.25 Plateau Keg River & Besa River/ conglomerate dolostone unconformity reef Upper Chinchaga Ft. Simpson equivalent Cross sections are not to scale; formation names are used unless otherwise noted. 3 Recommended citation: Rocheleau, J. and Fiess, K.M., 2014. Northwest Territories Oil and Gas Poster Series: Basins & Petroleum Resources, Table of Formations, Schematic Cross Sections; Northwest Territories Geoscience Office, NWT Open File 2014-03. 3 posters (supersedes NWT Open File 2007-03). Nahanni (Lonely Bay) Water Horn River Horn River Nahanni (altered to Nahanni (altered to Lower Chinchaga Manetoe dolomite) Manetoe dolomite) equivalent Arnica - Precambrian Pointed Landry / Arnica Bear Rock Mountain (altered to transition Thrust Manetoe dolomite) Middle Devonian Nahanni Formation, altered to sparry Manetoe dolomite, forms the reservoir rock. The trapping structure Slave Point Formation at the Middle Devonian carbonate barrier reef edge, draped by shales of the Horn River and Muskwa is a thrust fault anticline modified by secondary fault splays. (After Douglas, R.J.W. and Norris, D.K., 1974. GSC Map 1379A; Meding, formations, hosts natural gas. Reefs basinward (northwestward) also contain several gas shows. (After Williams, G.K., 1981. GSC M.G., 1994. Analysis of selected NWT hydrocarbon pool data, for GNWT-EMPR; Morrow, D.W. and Aulstead, K.L., 1995. Bull. CPG., v. 43, n. 3; Gal, Open File 761; Gal, L.P. and Jones, A.L., 2003. NWT Open File 2003-03.) L.P. and Jones, A.L., 2003. NWT Open File 2003-03.) N O R T H W E S T T E R R I T O R I E S GEOSCIENCE Aboriginal Affairs and Affaires autochtones et Northern Development Canada Développement du Nord Canada OFFICE RESEARCH • ANALYSIS • INFORMATION Oil & Gas ¹ Northwest Territories >>> www.nwtgeoscience.ca.
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