Surficial geology of the Kasmere Lake map sheet (NTS 64N

Surficial geology of the Kasmere Lake map sheet (NTS 64N

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Nueltin
Litt
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Wolk
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Shannon
Dewart
SHORELINE SEDIMENTS: sand and gravel; 1–2 m thick; beaches; formed by waves at the margins
of modern lakes
E
EOLIAN: sand and minor silt; dunes, blowouts and undulating plains; generally overlies deltaic
sediments, coarse lacustrine sediments, or glaciofluvial deposits
A
ALLUVIAL SEDIMENTS: sand and gravel, sand, silt, clay, organic detritus; 1–20 m thick; channel
and overbank sediments; reworked by existing rivers and deposited primarily as bars
Ms
MARGINAL GLACIOMARINE SEDIMENTS: littoral sand and gravel; 1–10 m thick; beach ridges,
spits, bars; formed by waves at the margin of the glacial Tyrrell Sea and present-day Hudson Bay
M
OFFSHORE GLACIOMARINE SEDIMENTS: clay, silt, minor sand; 1–20 m thick; very low relief
massive and laminated deposits which are commonly overlain by peat; deposited from suspension
in the offshore, deep water of the glacial Tyrrell Sea and present-day Hudson Bay
Ls
MARGINAL GLACIOLACUSTRINE SEDIMENTS: sand and gravel; 1–20 m thick; beach ridges, spits,
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
Lc
OFFSHORE GLACIOLACUSTRINE SEDIMENTS: clay, silt, minor sand; 1–20 m thick; low relief
massive and laminated deposits; deposited from suspension in offshore, deep water of glacial Lake
Agassiz; commonly scoured and homogenized by icebergs
Gs
DISTAL GLACIOFLUVIAL SEDIMENTS: fine sand, minor gravel, thin silt and clay interbeds; 1–75 m
thick; subaqueous outwash fans; deposited in glacial Lake Agassiz by meltwater turbidity currents;
commonly reshaped by wave erosion and reworked by wind
G
PROXIMAL GLACIOFLUVIAL SEDIMENTS: sand and gravel; 1–20 m thick; complex deposits, belts
with single or multiple esker ridges and kames, as well as thin, low-relief deposits; deposited in
contact with glacial ice by meltwater
Tc
Silt diamicton; largely derived from Phanerozoic carbonate rocks from the Hudson Bay Lowland and
deposited by an ice stream emanating from Hudson Bay
Tp
Sand diamicton; commonly bouldery, predominantly composed of Precambrian crystalline rocks and
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)
Lake
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ORGANIC DEPOSITS: peat, muck; <1–5 m thick; very low relief wetland deposits; commonly
in low-lying areas; accumulated in fen, bog, swamp, and marsh settings; in permafrost areas
commonly includes permafrost features such as patterned ground and peat palsas.
O
TILL: diamicton; unsorted glacial debris; 1–75 m thick; generally low-relief, commonly streamlined deposits; in 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
Ar
m
Stillman
Lake
Quaternary
Lm
rt
Pa
Brandson
Southall
LEGEND
Lake
MacMillian
Lake
Rc
Paleozoic terrane; carbonate-dominated rocks in areas west of Lake Winnipeg, exposed typically as
glacially striated, low-relief surfaces, and along large river valleys in the Hudson Bay Lowland
Rp
Precambrian terrane; intrusive, metasedimentary, and metavolcanic rocks having a glacially scoured
irregular surface with high local relief
Uncoloured legend blocks indicate units that do not appear on this map.
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
ut
La
ke
Snyder
no
Lake
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].
Th
a
Published by: Manitoba Science, Technology, Energy and Mines
Manitoba Geological Survey, 2006
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Compiled by: G.L.D. Matile and G.R. Keller
Fo
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tH
al
lL
Modified from:
Dredge, L.A., Nixon, F.M. and Richardson, R.J. 1982: Surficial geology, Kasmere Lake, Manitoba; Geological Survey of Canada,
Preliminary Map, Map 19-1981, Scale 1:250 000.
Atimkameskak
Lake
SURFICIAL GEOLOGY COMPILATION MAP SERIES
Quellet
SG-64N
Lake
Surficial geology of the Kasmere Lake map sheet
Keehn
Lake
se
w
La
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(NTS 64N), Manitoba
Kin
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100°
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r
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Se
Wintoniw
Lake
102°
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Scale 1:250 000
0
er
Riv
Egenolf
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N
59°
325 000
6 550 000
La
Dumaine
Lake
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Sp
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en
10
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Riv
Lake
59°
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100°
58°
56°
54°
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64P
64K
64J
64I
54L
64F
64G
64H
54E
64C
64B
64A
54D
Phone: (204) 945-4154
Toll free: 1-800-223-5215
E-mail: [email protected]
This map is available to download
free of charge at
www.gov.mb.ca/minerals
Suggested reference:
Matile, G.L.D. and Keller, G.R. 2006: Surficial geology of the Kasmere Lake map sheet (NTS 64N),
Manitoba; Manitoba Science, Technology, Energy and Mines, Manitoba Geological Survey,
Surficial Geology Compilation Map Series, SG-64N, scale 1:250 000.
54K
58°
54F
54G
54C
63N
63O
63P
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53N
63K
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62N
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52M
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52L
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52E
50°
88°
Index Map
54M
64O
100°
The DVD containing the entire Surficial Geology Compilation Map Series can be obtained from:
Manitoba Science, Technology, Energy and Mines
Manitoba Geological Survey, Publication Sales
360-1395 Ellice Ave
Winnipeg, MB, R3G 3P2
Canada
92°
64N
52°
30
Kilometres
North American Datum 1983
Universal Transverse Mercator Projection, Zone 14
Shuttle Radar Topography Mission elevation data provided by NASA (2003)
100X vertical exaggeration
Approximate mean declination (2006) for centre of map is 7°26' E, decreasing 17.2' annually.
96°
60°
96°
54B
54A
56°
53O
54°
52°
Legend
Map extent
0
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Kilometres
92°
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50°