Oil sands in glacial till as a driver of fast flow and instability in the former Laurentide Ice Sheet: Alberta, Canada Article Swipe
Rebecca McCerery
,
John Woodward
,
Kate Winter
,
Onoriode Esegbue
,
Martin Jones
,
Glen McHale
·
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.1002/esp.5700
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.1002/esp.5700
Reconstructions of the southwestern Laurentide Ice Sheet (LIS) from geomorphology have revealed complex cross‐cutting ice streams, indicative of surging and flow switching. This flow pattern and behaviour is distinct from the rest of the ice sheet where ice streams flowed radially to the ice sheet margin. Many ice streams in the southwestern sector originate around the Alberta Oil Sands (AOS). Previous reports have detected oil sands material in surficial and glacial sediments south of the AOS, demonstrating potential glacial mobilisation of the oil sands. In this study, we use geochemical fingerprinting to systematically investigate surficial sediments from the former Central Alberta Ice Stream (CAIS) flow track. We compare the geochemical signatures of 82 sediments from within and outside the CAIS limits with those of the AOS (from mines and natural exposures), using gas chromatography–mass spectrometry oil–oil correlation techniques. Our results provide geochemical evidence of glacial erosion and long‐distance mobilisation of AOS producing contamination signatures in sediments throughout the CAIS flow track. The strength of the AOS signature is particularly strong in sediments along the terminating margins, to the east of Calgary and in the Cooking Lake area to the southeast of Edmonton. These results inform theoretical models of enhanced slipperiness, inspired by slippery liquid infused porous surfaces (SLIPS), whereby oil lubrication of the basal sediment influences the degree of sliding and basal deformation in the ice stream. We hypothesise that naturally occurring hydrocarbons at the basal interface exerted control on the location of the onset zone of the CAIS and surrounding ice streams in Alberta. The enhanced slipperiness caused by oil contamination may also explain ice streaming and surging in other ice sheets, such as the Barents Sea Ice Sheet, where hydrocarbons are known to have been driven to the sedimentary interface during glaciation.
Related Topics
Concepts
Geology
Ice sheet
Ice stream
Glacial period
Seabed gouging by ice
Glacier
Geomorphology
Sediment
Oil sands
STREAMS
Erosion
Geochemistry
Oceanography
Sea ice
Cryosphere
Archaeology
History
Computer science
Asphalt
Computer network
Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1002/esp.5700
- https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/esp.5700
- OA Status
- hybrid
- Cited By
- 3
- References
- 60
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4386569343
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4386569343Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.1002/esp.5700Digital Object Identifier
- Title
-
Oil sands in glacial till as a driver of fast flow and instability in the former Laurentide Ice Sheet: Alberta, CanadaWork title
- Type
-
articleOpenAlex work type
- Language
-
enPrimary language
- Publication year
-
2023Year of publication
- Publication date
-
2023-09-09Full publication date if available
- Authors
-
Rebecca McCerery, John Woodward, Kate Winter, Onoriode Esegbue, Martin Jones, Glen McHaleList of authors in order
- Landing page
-
https://doi.org/10.1002/esp.5700Publisher landing page
- PDF URL
-
https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/esp.5700Direct link to full text PDF
- Open access
-
YesWhether a free full text is available
- OA status
-
hybridOpen access status per OpenAlex
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https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/esp.5700Direct OA link when available
- Concepts
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Geology, Ice sheet, Ice stream, Glacial period, Seabed gouging by ice, Glacier, Geomorphology, Sediment, Oil sands, STREAMS, Erosion, Geochemistry, Oceanography, Sea ice, Cryosphere, Archaeology, History, Computer science, Asphalt, Computer networkTop concepts (fields/topics) attached by OpenAlex
- Cited by
-
3Total citation count in OpenAlex
- Citations by year (recent)
-
2025: 2, 2024: 1Per-year citation counts (last 5 years)
- References (count)
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60Number of works referenced by this work
- Related works (count)
-
10Other works algorithmically related by OpenAlex
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