Holocene paleohydrology from Lake of the Woods and Shoal Lake cores using ostracodes, thecamoebians and sediment properties

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dc.contributor.supervisor Teller, James (Geological Sciences) en
dc.contributor.author Mellors, Trevor
dc.date.accessioned 2010-09-07T16:37:34Z
dc.date.available 2010-09-07T16:37:34Z
dc.date.issued 2010-09-07T16:37:34Z
dc.identifier.uri http://hdl.handle.net/1993/4098
dc.description.abstract Ten sediment cores (2.0-8.5 m long) from various locations in Lake of the Woods (LOTWs) and Shoal Lake (SL) were recovered in August 2006, using a Kullenberg piston corer. From the study of the macrofossils (primarily ostracodes and thecamoebians) and the sediments in six processed cores, variations in paleoconditions were observed both spatially and temporally, and the timing of these changes were identified in over 10,000 years of postglacial history. Ostracodes disappeared from the LOTWs record from about 9000 to 7600 calendar years before present (BP) (about 5800 in SL), after LOTWs became isolated from glacial Lake Agassiz. Thecamoebians appeared in many cores around 2000 calendar years BP, with the earliest appearance at 9200. Buried paleosols in three cores indicate portions of the lake dried on several occasions during the Hypsithermal, perhaps indicating the region’s future climate response. One core contained a pink clay bed indicative of the Marquette readvance about 11,300 years (BP), and the subsequent input of water from the Superior basin. en
dc.format.extent 21503539 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US
dc.rights info:eu-repo/semantics/openAccess
dc.subject Ostracodes en
dc.subject Thecamoebians en
dc.subject Isostatic Rebound en
dc.subject Climate Instability en
dc.subject Lake of the Woods en
dc.subject Shoal Lake en
dc.subject Holocene en
dc.subject Hypsithermal en
dc.subject Laurentide Ice Sheet en
dc.subject Lake Agassiz en
dc.subject Marquette Readvance en
dc.subject Charcoal en
dc.subject Paleohydrology en
dc.subject Sediments en
dc.title Holocene paleohydrology from Lake of the Woods and Shoal Lake cores using ostracodes, thecamoebians and sediment properties en
dc.type info:eu-repo/semantics/masterThesis
dc.type master thesis en_US
dc.degree.discipline Geological Sciences en
dc.contributor.examiningcommittee Last, William (Geological Sciences) Buhay, William (University of Winnipeg) en
dc.degree.level Master of Science (M.Sc.) en
dc.description.note October 2010 en

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