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Lake Lake 102° R 29 W R 28 W R 27 W R 26 W R 25 W R 24 W R 23 W R 22 W R 21 W R 20 W R 19 W R 18 W 100° R 17 W 300 000 325 000 350 000 375 000 400 000 425 000 LEGEND 54° 54° Quaternary Talbot ORGANIC DEPOSITS: peat, muck; <1–5 m thick; very low relief wetland deposits; commonly The Pas Airport ! <=287 ! O in low-lying areas; accumulated in fen, bog, swamp, and marsh settings; in permafrost areas Reader Clearwater Lake ! commonly includes permafrost features such as patterned ground and peat palsas. Prospector ke SHORELINE SEDIMENTS: sand and gravel; 1–2 m thick; beaches; formed by waves at the margins La Lm of modern lakes Tp 57 Lake Tp 57 0 0 0
n e 5 a os 7 w 9 e Lake o EOLIAN: sand and minor silt; dunes, blowouts and undulating plains; generally overlies deltaic M 5 tch ka E sediments, coarse lacustrine sediments, or glaciofluvial deposits as 0
0 S 0
5 h 7 rt
9 10
o ALLUVIAL SEDIMENTS: sand and gravel, sand, silt, clay, organic detritus; 1–20 m thick; channel
5 YZ N A and overbank sediments; reworked by existing rivers and deposited primarily as bars
R MARGINAL GLACIOMARINE SEDIMENTS: littoral sand and gravel; 1–10 m thick; beach ridges, Tp 56 iv e Umpherville <=285 Tp 56 Ms r ! spits, bars; formed by waves at the margin of the glacial Tyrrell Sea and present-day Hudson Bay Ralls Island ! ! South Saskeram <=289 OFFSHORE GLACIOMARINE SEDIMENTS: clay, silt, minor sand; 1–20 m thick; very low relief Lake The Pas Landry M massive and laminated deposits which are commonly overlain by peat; deposited from suspension <=283 Lake in the offshore, deep water of the glacial Tyrrell Sea and present-day Hudson Bay MARGINAL GLACIOLACUSTRINE SEDIMENTS: sand and gravel; 1–20 m thick; beach ridges, spits, Moose Ls bars, littoral sand and gravel; formed by waves at the margin of glacial Lake Agassiz and other small proglacial lakes in the extreme northwestern portion of the province Tp 55 ! Driftwood Tp 55 Young Point <=283 <=384 OFFSHORE GLACIOLACUSTRINE SEDIMENTS: clay, silt, minor sand; 1–20 m thick; low relief Pasquia Settlement Lake Lc massive and laminated deposits; deposited from suspension in offshore, deep water of glacial Lake Agassiz; commonly scoured and homogenized by icebergs Lake DISTAL GLACIOFLUVIAL SEDIMENTS: fine sand, minor gravel, thin silt and clay interbeds; 1–75 m
Moose Lake 0 ! 0 Gs thick; subaqueous outwash fans; deposited in glacial Lake Agassiz by meltwater turbidity currents; 0
0
5 commonly reshaped by wave erosion and reworked by wind 9
YZ10 5 PROXIMAL GLACIOFLUVIAL SEDIMENTS: sand and gravel; 1–20 m thick; complex deposits, belts
0 Tp 54 Tp 54 0 G with single or multiple esker ridges and kames, as well as thin, low-relief deposits; deposited in 0
0
5 contact with glacial ice by meltwater 9
5 Kelsey Red <=282 Rock TILL: diamicton; unsorted glacial debris; 1–75 m thick; generally low-relief, commonly streamlined deposits; in Lake Lake Lake Agassiz basin areas, till can be wave-washed, covered discontinuously by a thin veneer of glaciolacustrine sediments and scoured by icebergs; thicker sequences, primarily in the Hudson Bay Lowland, consist of multiple units of varying texture and provenance
! Silt diamicton; largely derived from Phanerozoic carbonate rocks from the Hudson Bay Lowland and Westray Tp 53 Tc deposited by an ice stream emanating from Hudson Bay Tp 53
Sand diamicton; commonly bouldery, predominantly composed of Precambrian crystalline rocks and Tp deposited by ice emanating from Nunavut
Pre-Quaternary
ROCK: > 75% bedrock outcrop; generally subglacially eroded and unweathered; in areas of permafrost includes frost shattered, angular, monolithic boulder fields (Felsenmeer) Tp 52 Tp 52
Herrin0 g Paleozoic terrane; carbonate-dominated rocks in areas west of Lake Winnipeg, exposed typically as 0 0 Rc glacially striated, low-relief surfaces, and along large river valleys in the Hudson Bay Lowland 5 2 9
Lake 5 Precambrian terrane; intrusive, metasedimentary, and metavolcanic rocks having a glacially scoured 0
0 Rp 0 irregular surface with high local relief
5 ! Cedar 2 Turnberry 9
5 YZ10 Uncoloured legend blocks indicate units that do not appear on this map. Tp 51 Tp 51 Letter symbols on legend blocks (not shown on map face) are used to identify units in the map legend database included on the DVD. To aid the reader, a shadow effect has been added to exaggerate the topographic relief based on data from the Shuttle Radar Topography Mission Digital Elevation Model.1
1 United States Geological Survey 2002: Shuttle radar topography mission, digital elevation model, Manitoba; United States Geological Survey, URL
Published by: Manitoba Science, Technology, Energy and Mines N Manitoba Geological Survey, 2006
A Compiled by: G.L.D. Matile and G.R. Keller
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T C Modified from: I Clarke, M.D. 1990: Surficial Geology, The Pas, Manitoba-Saskatchewan; Geological Survey of Canada, "A" Series Map, Map 1698A, scale 1:250 000.
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S SURFICIAL GEOLOGY COMPILATION MAP SERIES 0 0 0
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Surficial geology of The Pas map sheet
Tp 48 Overflowing River Tp 48 (NTS 63F), Manitoba ! 60 YZ 100° 96° 92° 88°
60° Index Map ! 64N 64O 64P 54M
64K 64J 64I 54L 54K 58° 58° 54F 64F 64G 64H 54E 54G Tp 47 54A Tp 47 10 54B YZ 64C 64B 64A 54D 54C 56°
56° 53O 53N 63N 63O 63P 53M 0 0
WINNIPEGOSIS 0 LAKE 5
7 53K
8 53L 63K 63J 63I 54° 5 54° 53° R 53° 63F 63G 63H 53E ed 300 000 325 000 350 000 375 000 400 000 425 000 63C 53D 102° Dawson Bay 100° 63B 63A 52° D ! R 29 W e R 28 W R 27 W R 26 W R 25 W R 24 W R 23 W R 22 W R 21 W R 20 W R 19 W 52° er Scale 1:250 000 62N 62O 62P 52M Red Legend 0 10 20 30 62K 62I 52L Map extent 62J 50° Kilometres 50° 0 100 200 62F 62G 62H 52E Kilometres
100° 96° 92° ! North American Datum 1983 The DVD containing the entire Surficial Geology Compilation Map Series can be obtained from: Phone: (204) 945-4154 Suggested reference: Universal Transverse Mercator Projection, Zone 14 Manitoba Science, Technology, Energy and Mines Toll free: 1-800-223-5215 Matile, G.L.D. and Keller, G.R. 2006: Surficial geology of The Pas map sheet (NTS 63F), Shuttle Radar Topography Mission elevation data provided by NASA (2003) Manitoba Geological Survey, Publication Sales E-mail: [email protected] 100X vertical exaggeration 360-1395 Ellice Ave This map is available to download Manitoba; Manitoba Science, Technology, Energy and Mines, Manitoba Geological Survey, Approximate mean declination (2006) for centre of map is 7°49' E, decreasing 11.6' annually. Winnipeg, MB, R3G 3P2 free of charge at Surficial Geology Compilation Map Series, SG-63F, scale 1:250 000. Canada www.gov.mb.ca/minerals
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