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TitleReconnaissance surficial geology, Indin Lake, Northwest Territories, NTS 86-B
AuthorKerr, D E; O'Neill, H B; Wolfe, S A; Morse, P D
Source45th Annual Yellowknife Geoscience Forum: abstract volume; Northwest Territories Geological Survey, Yellowknife Geoscience Forum Abstracts Volume 2017, 2017.
LinksAbstract - Résumé
Year2017
Alt SeriesNatural Resources Canada, Contribution Series 20170249
PublisherNorthwest Territories Geological Survey
Meeting45th Annual Yellowknife Geoscience Forum; Yellowknife, NT; CA; November 14-16, 2017
Documentserial
Lang.English
Mediapaper; on-line; digital
File formatpdf
ProvinceNorthwest Territories
NTS86B
AreaIndin Lake; Mattberry Lake; Snare Lake; Grenville Lake
Lat/Long WENS-116.0000 -114.0000 65.0000 64.0000
Subjectssurficial geology/geomorphology; postglacial deposits; eolian deposits; dunes; paleowinds; glacial deposits; glacial landforms; glacial features; glaciolacustrine deposits; glacial lakes; deltaic deposits; glaciofluvial deposits; outwash plains; outwash fans; ice contact deposits; kettles; eskers; hummocks; tills; moraines; till ridges; crag and tail; drumlins; glacial scours; colluvial deposits; till plains; glacial flutings; glacial striations; ice flow; ice movement directions; thermokarst; meltwater channels; flow trajectories; drumlinoids; kames; raised beaches; terraces; scarps; escarpments; sands; gravels; silts; glacial history; glaciation; deglaciation; shoreline changes; Glacial Lake McConnell; diamicton; Phanerozoic; Cenozoic; Quaternary
ProgramMackenzie Corridor, North Bear Surficial Mapping, GEM2: Geo-mapping for Energy and Minerals
AbstractThe glaciated landscape exhibits large-scale ice flow features such as drumlinoids, crag-and-tails, fluted bedrock, andh striations, which record westward to southwestward ice flow during the last glaciation. Glacially scoured bedrock dominates the map area. Discontinuous till veneer may occur throughout the map area. Glaciofluvial sediments, including eskers, kames and outwash plains, may be part of meltwater corridors, and generally trend westward and southwestward. During deglaciation which began about 10.5 ka BP, a small number of recessional moraines were formed, and glaciolacustrine sediments, associated with Glacial Lake McConnell, were deposited in the southwestern regions. Associated glaciolacustrine deltas and beaches, marking the retreating position of the receding ice front over time, occur between 290-330 m elevation. Other unrelated isolated deltas have also been observed at 370 m and 390 m. Postglacial eolian sediments exhibit dunes recording both north-northwestward and south-southeastward paleowind directions.
Summary(Plain Language Summary, not published)
The Indin Lake map (NTS 86-B) identifies surficial materials and associated landforms left by the retreat of the last glaciers. The surficial geology is based on aerial photograph interpretation, with striations from previous publications. This work provides new geological knowledge and improves our understanding of the distribution, nature and glacial history of surficial materials. It contributes to resource assessments and effective land use management.
GEOSCAN ID306145