Browsing by Author "Cage, Alix"
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Item Atlantic water inflow in the early Holocene Northwest Passage marked by planktonic foraminifera (Neogloboquadrina pachyderma)(2015) Pieńkowski, Anna J.; Cage, Alix; Furze, Mark F.A.; Figueiredo Martins, Ana Sílvia de; England, John H.; McLean, Brian; Blasco, SteveFour marine piston cores from the central Canadian Arctic Archipelago (CAA), investigated for sedimentology, micropalaeontology, and biogeochemistry (52 AMS radiocarbon dates), uniformly show the prominent early Holocene (˜10 cal ka BP) appearance of planktonic foraminifera immediately following deglaciation.Item Foraminifera: a tool for elucidating past and recent climate change in marine Arctic Canada(2017) Thiessen, Rabecca; Pieńkowski, Anna J.; Furze, Mark F.A.; Cage, Alix; Caouette, Alexandre; Coates, SinaOver the past five decades, polar regions such as the Canadian Arctic Archipelago (CAA) have experienced pronounced changes associated with recent climate warming, such as sea ice decline (ACIA, 2005; IPCC, 2007). Such relatively recent and open-ended environmental shifts have motivated research regarding past climate variability to understand how polar marine environments responded to previous high-magnitude changes such as glacial to interglacial transitions. MacEwan University's RAPIDE (Researching Arctic Palaeoceanographic Indicators of Deglacial Environments) program seeks to apply multiple sedimentological, stratigraphic, and micropalaeontological approaches to elucidate the timing and style of marine-based deglaciation and subsequent oceanographic evolution through the CAA.Item The marine signal of a collapsing ice margin: the catastrophic advance and collapse of the end Pleistocene Viscount Melville Sound Ice Shelf, Canadian Arctic Archipelago(2015) Furze, Mark F.A.; Pieńkowski, Anna J.; Nichols, Keir; Reedman, Amy; Esteves, Mariana da Silveira Ramos; Cage, Alix; Bennett, RobbieThis detailed study contributes towards an improved understanding of the constraints placed on the streaming of ice from M’Clintock Channel and the resulting draw-down and destabilization of the NW sector of the Laurentide Ice Sheet. Emerging foraminiferal, diatom, and biogeochemical data provide valuable insights into the deglacial and postglacial history of the western Northwest Passage.