SG-62J -- Surficial Geology of the Neepawa Map Sheet
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R 18 W R 17 W R 16 W R 15 W R 14 W R 13 W R 12 W R 11 W R 10 W R 9 W R 8 W R 7 W R 6 W R 5 W 100° R 98° 450,000 i 475,000 500,000 525,000 550,000 v e 0 0 0 r Bacon Ridge 0 0 0 , , 51° 0 0 51° SURFICIAL GEOLOGY COMPILATION MAP SERIES 5 5 6 6 , , 5 Birch 5 Makinak Ste. Amelie The Surficial Geology Compilation Map Series (SGCMS) addresses an increasing demand for Tp 23 Lake Tp 23 r consistent surficial geology information for applications such as groundwater protection, e Mulvihill v i industrial mineral management, protected lands, basic research, mineral exploration, R 6 Vogar engineering, and environmental assessment. The SGCMS will provide province-wide coverage 68 at scales of 1:500 000, 1:250 000 and a final compilation at 1:1 000 000. Edwards The unit polygons were digitized from paper maps originally published by the Geological 5 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 Dog Creek Tp 22 scale maps provide a bibliography for the original geological mapping. 10 Laurier 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. re Other polygon inconsistencies were modified in a similar manner. Geology (colour) is draped ch O Manitoba House Settlement Eriksdale over a shaded topographic relief map (grey tones) derived from the SRTM DEM. 68 68 1 United States Geological Survey 2002: Shuttle radar topography mission, digital elevation model, Manitoba; United States Geological Survey, URL <ftp://edcsgs9.cr.usgs.gov/pub/data/srtm/>, portions of files N48W88W.hgt.zip through N60W102.hgt.zip, 1.5 Mb (variable), 90 m cell, zipped hgt format [Mar 2003]. Tp 21 Tp 21 Alonsa 50 LEGEND Deerhorn 0 0 Quaternary 0 0 0 0 , , 5 McCreary 5 2 2 6 6 , 50 , 5 5 ORGANIC DEPOSITS: peat, muck; <1–5 m thick; very low O relief wetland deposits; accumulated in fen, bog, swamp, and marsh settings 5 Tp 20 Tp 20 6 SHORELINE SEDIMENTS: sand and gravel; 1–2 m thick; Lm beaches; formed by waves at the margins of modern lakes 10 Lundar Clear COLLUVIUM: landslide debris, eroded slopes, sheet flood Clear C deposits associated with steep slopes Lake 19 Lake Glencairn EOLIAN: sand and minor silt; dunes, blowouts and undulating Wasagaming E Tp 19 LAKE Tp 19 plains; generally overlies deltaic sediments, coarse lacustrine sediments, or glaciofluvial deposits Onanole Kelwood ALLUVIAL SEDIMENTS: sand and gravel, sand, silt, clay, A organic detritus; 1–20 m thick; channel and overbank Amaranth sediments; reworked by existing rivers and deposited primarily as bars MARGINAL GLACIOLACUSTRINE SEDIMENTS: sand and Waldersee 0 Glenella 0 Ls gravel; 1–20 m thick; beach ridges, spits, bars, littoral sand and 0 0 0 0 Tp 18 , Sandy Bay , Tp 18 0 0 gravel; formed by waves at the margin of glacial Lake Agassiz 0 0 6 6 Rack, ham , 5 50 5 Riding Mountain OFFSHORE GLACIOLACUSTRINE SEDIMENTS: clay, silt, minor 45 Lc Oak Point sand; 1–20 m thick; very low relief massive and laminated deposits; deposited from suspension in offshore, deep water of glacial Lake Erickson Kerrs L Tenby Agassiz; commonly scoured and homogenized by icebergs DISTAL GLACIOFLUVIAL SEDIMENTS: fine sand, minor gravel, 5 Gs thin silt and clay interbeds; 1–75 m thick; subaqueous outwash fans; 6 Tp 17 Tp 17 R Jackfish deposited in glacial Lake Agassiz by meltwater turbidity currents; o l l i n Birnie commonly reshaped by wave erosion and reworked by wind g Lake 10 MANITOBA PROXIMAL GLACIOFLUVIAL SEDIMENTS: sand and gravel; G 1–20 m thick; complex deposits, belts with single or multiple esker a ridges and kames, as well as thin, low-relief deposits; deposited in b o contact with glacial ice by meltwater t R i i Polonia n ve r Plumas Langruth a Eden M TILL: diamicton; 1–75 m thick; low-relief, commonly streamlined deposits; subglacial Tp 16 Tp 16 e deposits; largely derived from shale above the Manitoba Escarpment, carbonate rocks Clanwilliam k a in the central lowlands, and crystalline rocks in areas of Precambrian terrane; L thicker sequences consist of multiple units of varying texture; commonly scoured by icebergs; 5 covered discontinuously by thin veneers (<1 m) of glaciolacustrine and glaciofluvial sediments 0 0 0 0 0 0 , , 5 5 7 7 5 5 , , 5 Bethany Lak5 e Basswood Calcareous clay diamicton, predominantly derived from Mesozoic cis 50 Fran Tm shale Tp 15 16 Tp 15 Arden Calcareous silt diamicton, predominantly derived from Paleozoic St. Ambroise Tc dolomite and limestone W h Minnedosa i Franklin te m Keyes Non-calcareous sand diamicton, predominantly derived from u d Neepawa Tp Pre-cambrian crystalline rock Gladstone 16 16 Tp 14 16 St. Marks Tp 14 Pre-Quaternary Delta Beach River Woodside ROCK: > 75% bedrock outcrop; Cretaceous shales above the R Manitoba Escarpment, Paleozoic carbonate-dominated rocks in areas west and south of Lake Winnipeg, exposed typically as Hallboro glacially striated, low-relief surfaces; in Precambrian terrane, generally Cordova unweathered intrusive, metasedimentary, and metavolcanic rocks 10 Helston Westbourne having a glacially scoured irregular surface with high local relief 24 Mayfeld r 5 e Tp 13 0 v Oakland 0 Tp 13 Uncoloured legend blocks indicate units that do not appear on this map. 0 i 0 0 0 , R , 0 34 0 To aid the reader a shadow effect has been added to exaggerate the topographic relief. 5 5 5 5 , , 5 5 16 Katrime Published by: Manitoba Industry, Economic Development and Mines Moore Park Manitoba Geological Survey, 2004 Poplar Point Macdonald Edrans Brookdale e Compiled by: G.L.D. Matile and G.R. Keller e oin in 26 ib Wellwood P sin River As Modifed from: Tp 12 Tp 12 e RMSID vers. 2.0. 2002. Rural Municipality Soil Information Database for Manitoba version 2.0. in 25 High Bluff o ib Standardized GIS maps and databases of soil information for 117 municipalities in Manitoba in s s and the area of the City of Winnipeg, Land Resource Group - Manitoba; Research Branch, A 50° 50° Agriculture and Agri-Food Canada. Publication CD ROM. Ingelow Justice 450,000 Harte 475,000 500,000 525,000 550,000 100° 98° Geology polygons in the Riding Mountain National Park area are based on data from the Shuttle R 19 W R 18 W R 17 W R 16 W R 15 W R 14 W R 13 W R 12 W R 11 W R 10 W R 9 W R 8 W R 7 W R 6 W R 5 W Printed 2004 Radar Topography Mission Digital Elevation Model as interpreted by the MGS. Scale 1:250 000 0 10 20 30 Kilometres A brief description of the Quaternary landscape of southern Manitoba Major landforms: southern Manitoba Major landforms: NTS 62J 100° 98° 96° 100° 98° 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-62J Above the Manitoba Escarpment, the landscape is dominated by hummocky moraine or dead-ice topography, streamlined topography H Streamlined landforms e r topography and glacial spillways. Many areas are covered by thick sequences of glacial till representing numerous glacial episodes m Precambrian a n dating back more than 100,000 years. The most recent glacial advances were from the northwest. Glacial till tends to be clay rich. shield b 52° Dead-ice e 52° a Surficial geology of the Neepawa map sheet topography c The Interlake is dominated by streamlined landforms and in lower areas, glaciolacustrine depositional basins. Quaternary sediments h e tend to be relatively thin and the preservation of older sediments is uncommon, limited to bedrock protected areas such as s Dead-ice B e escarpments. Bedrock outcrops are common. Glacial advance was generally from the northwest, parallel to the streamlined topography d (NTS 62J), Manitoba r o c landforms. Glacial till is typically silt rich. Glacial retreat occurred in a series of steps marked by moraines: the Darlingford Moraine k f a u 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 ts Spill Red River lobe from the northwest; the Birds Hill–Belair Moraine; the Teulon Moraine; and The Pas Moraine (~9000 years old). w 60° a U M p y p 51° Index Map George Island Moraine, contemporaneous with and to the east of The Pas Moraine, is another ice margin of the retreating Rainy 51° e i 64N 64O 64P 54M r C Precambrian n a NTS 62J G n A m l ac shield e lobe. s p ia do s b l f e e s i lu U n l a l te n 54L 54K Dead-ice i 64K 64J 64I 58° i w s s p b a p M topography a r i p In the Precambrian shield, rock outcrops dominate the landscape.