10
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 102° Dropmore 83 100° 300,000 325,000 350,000 375,000 400,000 425,000 0 0 0 ,
51° 0 51° SURFICIAL GEOLOGY COMPILATION MAP SERIES 5 6 , 5 Tp 23 The Surficial Geology Compilation Map Series (SGCMS) addresses an increasing demand for Tp 23 0 consistent surficial geology information for applications such as groundwater protection, 0 0 ,
0 industrial mineral management, protected lands, basic research, mineral exploration, 5 6 ,
5 engineering, and environmental assessment. The SGCMS will provide province-wide coverage Inglis at scales of 1:500 000, 1:250 000 and a final compilation at 1:1 000 000. Shellmouth The unit polygons were digitized from paper maps originally published by the Geological Edwards Survey of Canada and Manitoba Geological Survey (MGS). In several areas, digital polygons derived from soils mapping were used to fill gaps in the geological mapping. The 1:250 000 Tp 22 L Tp 22 scale maps provide a bibliography for the original geological mapping. 10 Edge-matching of adjoining 1:250 000 scale map sheets is based on data from the Shuttle Radar Topography Mission Digital Elevation Model (SRTM DEM1) as interpreted by the MGS. Gunn Other polygon inconsistencies were modified in a similar manner. Geology (colour) is draped Cracknell Lake over a shaded topographic relief map (grey tones) derived from the SRTM DEM.
1 United States Geological Survey 2002: Shuttle radar topography mission, digital elevation model, Manitoba; United 83 States Geological Survey, URL
0 Quaternary
Russell 0 0 , 5 2 6
Silverton Lake , 16 5 ORGANIC DEPOSITS: peat, muck; <1–5 m thick; very low Harrowby Audy O relief wetland deposits; accumulated in fen, bog, swamp, and 0 0
0 marsh settings , 45 5
2 Angusville 6 , Tp 20 5 Tp 20 SHORELINE SEDIMENTS: sand and gravel; 1–2 m thick; Lm beaches; formed by waves at the margins of modern lakes
Millwood 10 16 Clear COLLUVIUM: landslide debris, eroded slopes, sheet flood Clear C deposits associated with steep slopes Lake Waywayseecappo Rossburn Lake
Wasagaming EOLIAN: sand and minor silt; dunes, blowouts and undulating E plains; generally overlies deltaic sediments, coarse lacustrine 45 Tp 19 Tp 19 sediments, or glaciofluvial deposits Binscarth Onanole Vista
L
i t ALLUVIAL SEDIMENTS: sand and gravel, sand, silt, clay, t
l e A organic detritus; 1–20 m thick; channel and overbank The Corners Gambler sediments; reworked by existing rivers and deposited primarily as bars
l i a t Oakburn MARGINAL GLACIOLACUSTRINE SEDIMENTS: sand and d r i 0 Ls
0 gravel; 1–20 m thick; beach ridges, spits, bars, littoral sand and B
Sandy 0 , Tp 18 Tp 18 0 gravel; formed by waves at the margin of glacial Lake Agassiz Keeseekoowenin 0 6 ,
Rackham 5 Menzie Elphinstone Lake
0 OFFSHORE GLACIOLACUSTRINE SEDIMENTS: clay, silt, minor 0 45 45 0 45 , Foxwarren 16 0 Lc sand; 1–20 m thick; very low relief massive and laminated deposits; 0 6 ,
5 deposited from suspension in offshore, deep water of glacial Lake Agassiz; commonly scoured and homogenized by icebergs Solsgirth
16 Kelloe DISTAL GLACIOFLUVIAL SEDIMENTS: fine sand, minor gravel, S a Gs thin silt and clay interbeds; 1–75 m thick; subaqueous outwash fans; 21 sk R Tp 17 Tp 17 at deposited in glacial Lake Agassiz by meltwater turbidity currents; ch o e l l St-Lazare w i a n commonly reshaped by wave erosion and reworked by wind
n g 41 A Shoal Lake s 42 42 PROXIMAL GLACIOFLUVIAL SEDIMENTS: sand and gravel; s Birtle Shoal G in 1–20 m thick; complex deposits, belts with single or multiple esker ib ridges and kames, as well as thin, low-relief deposits; deposited in Strathclair R o Lake iv contact with glacial ice by meltwater i er n 16 R e iv er Tp 16 TILL: diamicton; 1–75 m thick; low-relief, commonly streamlined deposits; subglacial Tp 16 deposits; largely derived from shale above the Manitoba Escarpment, carbonate rocks Salt in the central lowlands, and crystalline rocks in areas of Precambrian terrane; Raven Newdale Lake thicker sequences consist of multiple units of varying texture; commonly scoured by icebergs; Lake covered discontinuously by thin veneers (<1 m) of glaciolacustrine and glaciofluvial sediments 0 0 0 , 5 7 5 , 5 Basswood Calcareous clay diamicton, predominantly derived from Mesozoic 0
0 Tm 0 shale , 5 7
5 16 Tp 15 ,
Tp 15 5 Lavinia Decker Calcareous silt diamicton, predominantly derived from Paleozoic Birdtail Sioux Isabella McConnell McAuley Beulah Tc dolomite and limestone R iv Uno e Cardale Non-calcareous sand diamicton, predominantly derived from r O a Tp Pre-cambrian crystalline rock k
83 21 Tp 14 Tp 14 Pre-Quaternary
Hamiota Moline ROCK: > 75% bedrock outcrop; Cretaceous shales above the Willen R Manitoba Escarpment, Paleozoic carbonate-dominated rocks in areas west and south of Lake Winnipeg, exposed typically as 41 Crandall glacially striated, low-relief surfaces; in Precambrian terrane, generally Miniota Arrow River Manson Oak River 10 unweathered intrusive, metasedimentary, and metavolcanic rocks Quadra 24 24 24 Rapid City having a glacially scoured irregular surface with high local relief 24 R
Pope i v Reeder e 0
0 Tp 13 Uncoloured legend blocks indicate units that do not appear on this map. Tp 13 r
Pettapiece 0 ,
0 To aid the reader a shadow effect has been added to exaggerate the topographic relief. 5 5 ,
Oakner 5 Published by: Manitoba Industry, Economic Development and Mines 0 0 0 , Manitoba Geological Survey, 2004 0 5 5 , 5 Compiled by: G.L.D. Matile and G.R. Keller
Rivers Modifed from: Chimo Resort Tp 12 Tp 12 1Kirkella Two Creeks Klassen, R.W. 1978. Surficial geology of Riding Mountain, west of principle meridian Manitoba- Wheatland 25 25 Saskatchewan; Geological Survey of Canada, "A" Series Map, Map 1479A, 1 map. Scale 1:250 000. 50° 50° Kenton Geology polygons in the Riding Mountain National Park area are based on data from the Shuttle 300,000 325,000 350,000 375,000 Bradwardine 400,000 425,000 102° 83 Harding 100° Radar Topography Mission Digital Elevation Model as interpreted by the MGS. R 29 W R 2E8l kWhorn R 27 W R 26 W R 25 W R 24 W R 23 W R 22 W R 21 W R 20 W Printed 2004 Scale 1:250 000
U p 0 10 20 30 p e r e C
Kilometres n
i a
a m r p o b e M ll a b Major landforms: southern Manitoba Major landforms:r NTS 62K ea A brief description of the Quaternary landscape of southern Manitoba u c l h 100° 98° 96° 102° t 100° e
P G 53° Eastward-facing bedrock escarpments culminating in cuestas which form the Manitoba Escarpment provide a foundation for the 53° e 51° 51° The Pas Moraine or M ge present-day landscape of southern Manitoba. To the east, the landscape is dominated by Precambrian rocks and bedrock structure, o Is SURFICIAL GEOLOGY COMPILATION MAP SERIES ra l i an such as faulting, is commonly visible. ne d Dead-ice SG-62K Above the Manitoba Escarpment, the landscape is dominated by hummocky moraine or dead-ice topography, streamlined topography Streamlined landforms topography and glacial spillways. Many areas are covered by thick sequences of glacial till representing numerous glacial episodes Dead-ice Precambrian topography dating back more than 100,000 years. The most recent glacial advances were from the northwest. Glacial till tends to be clay rich. shield 52° Dead-ice The Interlake is dominated by streamlined landforms and in lower areas, glaciolacustrine depositional basins. Quaternary sediments 52° topography Surficial geology of the Riding Mountain map sheet tend to be relatively thin and the preservation of older sediments is uncommon, limited to bedrock protected areas such as Dead-ice B e escarpments. Bedrock outcrops are common. Glacial advance was generally from the northwest, parallel to the streamlined topography d (NTS 62K), Manitoba r o
c A landforms. Glacial till is typically silt rich. Glacial retreat occurred in a series of steps marked by moraines: the Darlingford Moraine k f s y a u s a l 100° 96° 92° 88° (~11,000 years old); the Sandilands Moraine, which represents the interlobate position of the Rainy lobe from the northeast and the t i w s n l l i i b Red River lobe from the northwest; the Birds Hill–Belair Moraine; the Teulon Moraine; and The Pas Moraine (~9000 years old). p 60° o s U i l p M n i Index Map pe 51° 64N 64P 54M George Island Moraine, contemporaneous with and to the east of The Pas Moraine, is another ice margin of the retreating Rainy 51° r e a 64O C Precambrian t i a G Saskatchewan s n A m la d n c shield p r lobe. s p ia i e s b l f il d
e e o i lu l
n l w B
l te n s 54L 54K
Dead-ice i a 64K 64J 64I 58° i w s a b
a s y topography a r M In the Precambrian shield, rock outcrops dominate the landscape. Quaternary sediments are commonly thick, but discontinuous, o p v i i o llwa n 58° i l y n n e im e e - M d e c i rarely completely infilling the bedrock lows. Older sediments, including saprolites, are often preserved in the bedrock lows where n r t o u i i 54F s o s 64F 64G 64H 54E t a p a f a 54G r l i s o c l e a they are protected from glacial erosion. Glacial advance was generally from the northeast. Glacial till is typically sand rich. l c N s w r a M B o p 54A b r a r n – o t p l i y o l n h l l i a e l 54B u a w 54C Te H te 64C 64B 64A 54D
s 56°
As the glaciers retreated, glacial lakes Souris and Hind formed and drained, and glacial Lake Agassiz expanded northward, NTS 62K s g t a d la 50° y 50° Portage la Prairie ir c 56° B ia 53O progressively covering the entire area below the Manitoba Escarpment. Major Lake Agassiz landforms include the Assiniboine alluvial fan l d 53N e 63O 53M Assiniboine Delta b 63N 63P Delta, which formed as glacial meltwater flowed from the Assiniboine spillway, and clay plains composed of tens of metres of clay ri Glacial Glacial Lake Agassiz s and silt. The Herman beaches indicate the highest level attained by Lake Agassiz in southern Manitoba. The Upper Campbell beach Lake Hind Sand dunes P clay plain 53K em 63K 63J 63I 53L b d M H 54° is the best developed of the Lake Agassiz beaches and is evident along the base of the Manitoba Escarpment. in r o e a o r r Alluvial fans S Bogs and fens sp f a m a 54° i g i n ll lin n a M d w r e n o il a a a Holocene modifications to the landscape include eolian activity (sand dunes) primarily in the Assiniboine Delta and the Sandilands y D b ra n 63F 63G 63H 53E e in d a e s Glacial c Moraine; the Portage la Prairie alluvial fan, from which fluctuating Assiniboine River flow directions over the last 7000 years have Dead-ice h Lake Souris e Alluvial fans 49° 49° topography s 50° 50° 63C 53D been documented; smaller alluvial fans that have developed along the Manitoba Escarpment; large landslide areas (colluvium) that 63B 63A 52° are active along the northern part of the Manitoba Escarpment; and organic accumulations (bogs and fens) with basal radiocarbon 100° 98° 96° 102° Arrow Hills esker 100° 52° Scale 1:4 000 000 landforms indicating Scale 1:1 000 000 landforms indicating dates of approximately 6000 years, that occur in the northeast and extend westward into the northern and eastern Interlake and 62N 62O 62P 52M 800 500 200 0 20 40 80 120 160 direction of ice flow 0 5 10 20 30 40 direction of ice flow Legend southward into southeastern Manitoba. striations indicating Kilometres Kilometres m asl direction of ice flow 62K 62I 52L Map extent 62J 50° 50° 0 90 180 62F 62G 62H 52E Kilometres North American Datum 1983 Copies of this map can be obtained from: Phone: (204) 945-4154 Suggested reference: Universal Transverse Mercator Projection, Zone 14 Manitoba Industry, Economic Development and Mines Toll free: 1-800-223-5215 Matile, G.L.D. and Keller, G.R. 2004: Surficial geology of the Riding Mountain map sheet (NTS 62K), Manitoba; Shuttle Radar Topography Mission elevation data provided by NASA (2003) Manitoba Geological Survey, Publication Sales E-mail: [email protected] 100° 96° 92° 100X Vertical Exaggeration 360-1395 Ellice Ave This map is available to download Manitoba Industry, Economic Development and Mines, Manitoba Geological Survey, Approximate mean declination (2004) for centre of map is 8°18' E, decreasing 7.4' annually. Winnipeg, MB, R3G 3P2 free of charge at Surficial Geology Compilation Map Series, SG-62K, scale 1:250 000. Canada www.gov.mb.ca/itm/mrd