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TitleSulphuric acid speleogenesis associated with a glacial driven groundwater system - paleo-spring "pipes" at Borup Fiord Pass, Nunavut
AuthorGrasby, S EORCID logo; Beauchamp, B; Bense, V
SourceAstrobiology vol. 12, no. 1, 2012 p. 1-10,
Alt SeriesEarth Sciences Sector, Contribution Series 20110208
PublisherMary Ann Liebert Inc
Mediapaper; on-line; digital
File formatpdf
NTS340B/16; 340C/01
AreaBorup Fiord Pass; Ellesmere Island
Lat/Long WENS-82.0000 -81.4167 81.2500 80.9167
Subjectsgeochemistry; hydrogeology; gypsum; mineral springs; springs; hot springs geochemistry; sulphur; sulphur water; stable isotope studies
Illustrationslocation maps; plots; photographs; models
ProgramGEM: Geo-mapping for Energy and Minerals, Sverdrup Sedimentary Basin
AbstractGypsum filled "pipe" features were discovered in the proglacial area of the Borup Fiord Pass supraglacial sulfur spring. Stable isotope data suggest that gypsum is formed through oxidation of sulfides and are consistent with models of sulfuric acid speleogenesis. These results suggest that gypsum pipes are paleo-spring discharge channels analogous to those that feed the modern sulfur spring at Borup Fiord. A conceptual model is proposed whereby retreat of the glacial front and associated growth of permafrost in ground exposed now to low arctic temperatures leads to "freezing-in" of the spring system and abandonment of old channels in favor of more open flow systems in the subglacial region. Results provide a model for glacially driven groundwater systems that may form in association with Mars' polar icecaps and potential geological signatures for paleo-groundwater discharge.

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