Flathead Table of Formations

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Table 1: Table of Formations in the Flathead Area Part B: Devonian to Permian unconformity Johnson Canyon Formation phosphatic siltstones, chert, basal 0-30 m chert-phosphate conglomerate Ishbel Group p Permian unconformity rou n g er Kananaskis Formation silty and sandy dolomite, silstones and p 0-30m chert breccia Su Rocky Mountain Group Misty Formation sandstone with minor amounts of 60-625m Spray Lakes 75-200 m siltstone and dolomite Pennsylvania unconformity brightly coloured Todhunter Mbr siltstone, dolomite and calc. sandstone dolomite, crinoidal and oolitic Etherington Formation limestones, green and maroon shale, 70-170m anhydrite, sandstone, and siltstone micritic and skeletal Carnarvon Mbr limestone with lesser 23-90 m dark-grey amounts of calcareous Opal weathering shale Mbr skeletal, oolitic, 200-680 m 200- micritic and arg. silty dolomite and 240 m Marston Mbr limestones and anhydrite, lesser 18-68 m calc. shale amounts of limestone and shale Rundle Group Loomis Mbr oolitic, crinoidal, and micritic limestone, Mississippian 30 -100 m and fine to medium crystalline dolomite silty and sandy dolomite, anhydrite with Mount Head Formation Salter Mbr crinoidal grainstone and packstone 29-67 m increasing to west Baril Mbr 11-39 m oolitic, micritic and crinoidal limestone Wileman Mbr 8-25m silty dolomite and anhydrite fine to coarse crinoidal grainstones and Livingstone Formation packstones, and fine crystalline 200-400 m dolomite. Banff Formation 250-365 m dark cherty limestones and shales Exshaw Formation 2-10 m black organic shale, silstone, chert limestone, dolomite and anhydrite Palliser Formation 175-220 m (solution breccia in outcrop) sandstone, Sassenach silty carbonate and Alexo Formation siltstone, sandy Fm anhydrite (solution 5-30 m and silty 170 m breccia in outcrop) carbonate Nisku light grey coarse Arcs Mbr 0-45 m Formation dolomite Grotto Mbr 0-60 20-65 m dark grey dolomite "Ireton" "Ireton" 0-3m arg. carbonate grey Mount Hawk Fm Peechee Leduc light grey coarse argillaceous (basinal) Mbr Formation dolomite, dolomite and limestone, part Upper Devonian 0-150 m 0-200 m 200 m anhydrite Southesk Formation silty Borsato dark calc. shale dark limestone, Perdrix Cooking Lake Formation and shaly crystalline dolomite, Fairholme Group Formation Formation 15-60 m limestone dolomite anhydrite 50-60 m Hollebeke Formation limestone, dolomite, and anhydrite Beaverhill Lake 120-240 m (solution breccia in outcrop) Group 100 m Middle sandy and silty dolomite, dolomitic Yahatinda Formation 0-30 m Devonian siltstone and sandstone unconformity.

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