Field
Value
Language
dc.contributor.author
Haiblen, Anna Macdonald
datacite.creator.affiliationIdentifier
https://ror.org/0213rcc28
en_US
datacite.creator.affiliation
Simon Fraser University
en_US
datacite.creator.nameIdentifier
https://orcid.org/0000-0002-9773-8030
en_US
dc.date.accessioned
2023-03-13T17:52:59Z
dc.date.available
2023-03-13T17:52:59Z
dc.date.issued
2023-03-13
dc.identifier.uri
https://www.frdr-dfdr.ca/repo/dataset/31e17ee6-4405-4ccd-a9ee-910ff6435750
dc.identifier.uri
https://doi.org/10.25314/bd59a8ee-6c74-4dc9-b541-3b9e08dc4490
dc.description
The Quaternary geology of the Lac de Gras area was studied by 1:20 000 surficial geology mapping of 770 km2 and investigating the genesis of enigmatic landforms. Three distinct flow directions of the Laurentide Ice Sheet are recorded: flow to the southwest, then west, and finally to the west northwest. Digital mapping with high-resolution orthoimagery and a 30 cm lidar DEM provides insight into the deglacial history. ‘Subglacial meltwater corridors’ are prominent in the area. These are tracts that roughly parallel the final ice-flow direction, where basal till has been eroded, bedrock is exposed, and glaciofluvial sediments have been deposited; enigmatic, glaciofluvial mounds composed of sandy diamicton are common. These mounds have highly variable morphologies and occur in groups. They are typically 50 m wide and rise up to 15 m above the surrounding topography. Subglacial meltwater corridors and enigmatic mounds likely formed when supraglacial lakes drained catastrophically during deglaciation.
This dataset was originally deposited in the Simon Fraser University institutional repository.
en_US
dc.publisher
Federated Research Data Repository / dépôt fédéré de données de recherche
dc.rights
Creative Commons Attribution 4.0 International (CC BY 4.0)
en_US
dc.rights.uri
https://creativecommons.org/licenses/by/4.0/
en_US
dc.subject
Quaternary Geology
en_US
dc.subject
Laurentide Ice Sheet
en_US
dc.subject
Surficial mapping
en_US
dc.subject
Glacial landform genesis
en_US
dc.subject
Subglacial meltwater flow
en_US
dc.subject
Lac de Gras
en_US
dc.title
Glacial History and Landform Genesis in the Lac de Gras Area, Northwest Territories
en_US
globus.shared_endpoint.name
f163c1b3-9c88-42f6-a7bb-5839ed6c4063
globus.shared_endpoint.path
/8/published/publication_683/
datacite.publicationyear
2023
datacite.resourcetype
Dataset
en_US
datacite.relatedidentifier.IsCitedBy
https://doi.org/10.48410/59dh-de19
datacite.geolocation.geolocationPlace
Lac de Gras;-;Northwest Territories;Canada
datacite.fundingReference.funderIdentifier
en_US
datacite.fundingReference.funderName
en_US
datacite.fundingReference.awardNumber
en_US
datacite.fundingReference.awardTitle
en_US
frdr.crdc.code
RDF1050802
en_US
frdr.crdc.group_en
Earth and related environmental sciences
en_US
frdr.crdc.class_en
Cryosphere processes
en_US
frdr.crdc.field_en
Glaciology
en_US
frdr.crdc.group_fr
Sciences de la Terre et sciences de l'environnement connexes
fr_CA
frdr.crdc.class_fr
Processus de la cryosphère
fr_CA
frdr.crdc.field_fr
Glaciologie
fr_CA
datacite.description.other
Rights remain with the creator; contact for details.
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