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Variability in timing and transport of Pleistocene meltwater recharge to regional aquifers

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dc.contributor.authorMowat, Aidan
dc.contributor.authorFrancis, Daniel
dc.contributor.authorMcIntosh, Jennifer
dc.contributor.authorLindsay, Matthew B. J.
dc.contributor.authorFerguson, Grant
dc.date.accessioned2022-09-27T21:49:04Z
dc.date.available2022-09-27T21:49:04Z
dc.date.issued2021-10-07
dc.description© 2021. American Geophysical Union. All Rights Reserved.en_US
dc.description.abstractThe impacts of Pleistocene glaciation on groundwater flow systems in sedimentary basins are widely recognized, but the timing and distribution of subglacial recharge events remain poorly constrained. We investigate the spatial and temporal variability of recharge events from glaciations over the last 2 million years in the Williston Basin, Canada. Integration of fluid chemistry, stable isotope data, and transport modeling indicate that meltwater arrived at depths of ∼600–1000 m in the northcentral region of the Williston Basin at two separate time periods, 75–150 and 300 ka, which we attribute to permeability differences between stacked aquifer systems. Our findings indicate that meltwater recharge extended along the northern margin of the Williston Basin as well as previously identified recharge areas to the east. Given the distance of measurements from recharge areas, evidence of recharge from the early to mid-Pleistocene appears to be preserved in the Williston Basin.en_US
dc.description.sponsorshipGlobal Water Futures and NSERC (Grant No. CRDPJ 500161-16); NSERC (Grant No. RGPIN-2020-05172); NSERC CGS-M; NSERC PGS-D Program (PGSD3-546592-2020); University of Saskatchewan Dean's Scholarship; Saskatchewan Queen Elizabeth II Centennial Aboriginal Scholarship.en_US
dc.description.versionPeer Revieweden_US
dc.identifier.citationMowat, A.C., Francis, D. J., McIntosh, J. C., Lindsay, M. B. J., & Ferguson, G. A. G. (2021). Variability in timing and transport of Pleistocene meltwater recharge to regional aquifers. Geophysical Research Letters, 48(20), e2021GL094285. https://doi.org/10.1029/2021GL094285en_US
dc.identifier.doi10.1029/2021GL094285
dc.identifier.urihttps://hdl.handle.net/10388/14235
dc.language.isoenen_US
dc.publisherAmerican Geophysical Union (AGU)en_US
dc.subjectPleistocene glacial meltwater rechargeen_US
dc.subjectPaleozoic deep stacked carbonate aquifersen_US
dc.subjectpermeability differencesen_US
dc.subjectWilliston Basinen_US
dc.titleVariability in timing and transport of Pleistocene meltwater recharge to regional aquifersen_US
dc.typeArticleen_US

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