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OFR 2012-16

Surficial Geology and Quaternary History of the Southern Lesser Slave Lake Area (NTS 83O South)

Abstract: This report describes the distribution, character, and origin of surficial sediments south of Lesser Slave Lake in the Lesser Slave River (NTS 83O/SE) and Faust (NTS 83O/SW) map areas and outlines the Quaternary history of the region. This region consists of a narrow lowland that extends parallel to the lake and separates uplands rising to the north and south. Widespread deposits of till and associated streamlined glacial landforms document the southward advance of Laurentide ice across the southern Lesser Slave Lake area. A succession of up to three till facies, in places overlying preglacial fluvial deposits indicates that the Lesser Slave basin and the surrounding uplands of the Swan Hills and Pelican Mountains were inundated by the Laurentide Ice Sheet during late Wisconsinan glaciation.The Laurentide Ice Sheet retreated from the southern Lesser Slave Lake area at ca. 12 ka BP. This retreat is recorded by a widespread suite of ice-marginal and proglacial sediment-landform associations, including large areas of well-developed doughnut moraine. The association of doughnut moraine with glaciofluvial landforms supports the interpretation that deglaciation was characterized by widespread ice stagnation, in part associated with the melting of residual ice masses that persisted after regional deglaciation.Following regional retreat of the Laurentide Ice Sheet, the postglacial evolution of the Lesser Slave Lake area has been influenced by the accumulation of fine-grained alluvium, eolian sediment, and extensive peatlands, which mantle the glaciolacustrine deposits, particularly across the lowlands of the Lesser Slave Plain. Upland areas have been further influenced by slope failures and mass movements, with extensive colluvial deposits resulting from deep-seated landslides that fringe the steep slopes of the Pelican, Flat Top and House mountains, and Grizzly Ridge. Place Keywords 83o alberta canada faust house mountain area lesser slave lake pelican mountain slave lake swan hills Theme Keywords alluvium eolian geology glaciolacustrine glaciolacustrine deposits moraines peatland quaternary surficial geology surficial glacial deposits surficial mapping tertiary gravel till

Pawley, S.  Atkinson, N.  2012-11-06

OFR 2009-07

Surficial Geology and Quaternary History of the High Prairie Area, Alberta (NTS 83N/SE)

Surficial Geology and Quaternary History of the High Prairie Area, Alberta (NTS 83N/SE) The High Prairie map area is west of Lesser Slave Lake, and comprises the Swan Hills Upland in the south, and the broad lowlands of the Sturgeon, Falher and ... Show Abstract

Atkinson, N.  2009-04-16

OFR 2008-02

Surficial Geology of the McLennan Area, Alberta (NTS 83N/NE): Report to Complement Surficial Geology Map of the McLennan Area

The Heart River Upland is a wooded terrain with abundant wetlands and includes a broad area of moraine in the north central part and hummocky to flat glaciolacustrine sediment covers much of the remainder. Primary sediment cover is glaciolacustrine ... Show Abstract

Fenton, M.M.  2008-04-14

OFR 1985-18

Air Photo Interpretation of Surficial Geology, Lesser Slave Lake - Utikuma Lake Map Area

Air Photo Interpretation of Surficial Geology, Lesser Slave Lake - Utikuma Lake Map Area Air photo interpretation of surficial geology by Lesser Slave Lake and Utikuma Lake. Map areas N ½ 83O, S ½ 84B. Place Keywords 83o 84b alberta canada ... Show Abstract

Andriashek, L.D.  1985-01-01

OFR 1983-08

Soil Survey of Lesser Slave Lake Provincial Park and Interpretation for Recreational Use

The southern portion of the park, in the Lesser Slave River valley, is characterized mainly by sand dunes near the lakeshore and medium to fine-textured till further east. Some interpretations are made for each map unit indicating the possible use ... Show Abstract

Greenlee, G.M.  Howitt, R.W.  1983-01-01

OFR 1977-11

Soil Survey of Hilliard's Bay Area on the Northwest Shore of Lesser Slave Lake and Interpretation for Recreational Use

Soil Survey of Hilliard's Bay Area on the Northwest Shore of Lesser Slave Lake and Interpretation for Recreational Use The report is one of a series describing detailed and semi-detailed soil surveys, which were conducted in the following Alberta ... Show Abstract

MacMillan, R.A.  Greenlee, G.M.  1977-01-01

OFR 1973-12

Soil survey of Lesser Slave Lake Provincial Park and interpretation for recreational use

Soil survey of Lesser Slave Lake Provincial Park and interpretation for recreational use Soil surveys conducted in the following provincial parks during the summer of 1972: Little Bow, entrance, portion of Lesser Slave Lake, Bragg Creek, Police ... Show Abstract

Greenlee, G.M.  1973-01-01

DIG 2010-0030

Surficial Geology of the Lesser Slave River Area (NTS 83O/SE) (GIS data, polygon features)

Surficial Geology of the Lesser Slave River Area (NTS 83O/SE) (GIS data, polygon features) The data were created in geodatabase format and output for public distribution in shapefile format.These data comprise the polygon features of Alberta ... Show Abstract

Pawley, S.M.  2011-01-13

DIG 2010-0033

Surficial Geology of the Faust Area (NTS 83O/SW) (GIS data, polygon features)

Surficial Geology of the Faust Area (NTS 83O/SW) (GIS data, polygon features) The data were created in geodatabase format and output for public distribution in shapefile format.These data comprise the polygon features of Alberta Geological Survey ... Show Abstract

Atkinson, N.  2011-01-13

DIG 2010-0034

Surficial Geology of the Faust Area (NTS 83O/SW) (GIS data, line features)

Surficial Geology of the Faust Area (NTS 83O/SW) (GIS data, line features) The data were created in geodatabase format and output for public distribution in shapefile format.These data comprise the line features of Alberta Geological Survey Map ... Show Abstract

Atkinson, N.  2011-01-13