Holocene glacial history of the Bowser River Watershed, Northern Coast Mountains, British Columbia

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dc.contributor.authorSt-Hilaire, Vikki Maria
dc.contributor.supervisorSmith, Daniel J.
dc.date.accessioned2014-12-24T17:39:03Z
dc.date.available2014-12-24T17:39:03Z
dc.date.copyright2014en_US
dc.date.issued2014-12-24
dc.degree.departmentDepartment of Geographyen_US
dc.degree.levelMaster of Science M.Sc.en_US
dc.description.abstractAccelerated glacial recession and downwasting of glaciers in the Bowser River Watershed of the northern British Columbia Coast Mountains have exposed subfossil wood remains and laterally contiguous wood mat layers. To develop an understanding of Holocene glacial fluctuations in this region, field investigations were conducted in 2005, 2006 and 2013 at Frank Mackie, Charlie, Salmon and Canoe glaciers. These wood remains represent periods of Holocene glacier advance, when glaciers expanded and overwhelmed downvalley forests. Dendroglaciology and radiocarbon analyses revealed five intervals of glacial expansion: (1) a mid-Holocene advance at 5.7-5.1 ka cal. yr BP; (2) an early Tiedemann advance at 3.6-3.4 ka cal. yr BP; (3) a late Tiedemann advance at 2.7-2.4 ka cal. yr BP; (4) a First Millennium AD Advance at 1.8-1.6 ka cal. yr BP; and, (5) three advances during the Little Ice Age at 0.9-0.7, 0.5 and 0.2-0.1 ka cal. yr BP. These results provide new evidence for mid-Holocene glacier activity in northern British Columbia, as well as supporting previous research that Holocene glacier advances were episodic and regionally synchronous.en_US
dc.description.proquestcode0368en_US
dc.description.scholarlevelGraduateen_US
dc.identifier.urihttp://hdl.handle.net/1828/5817
dc.languageEnglisheng
dc.language.isoenen_US
dc.rights.tempAvailable to the World Wide Weben_US
dc.subjectHoloceneen_US
dc.subjectGlacieren_US
dc.subjectDendroglaciologyen_US
dc.subjectDendrochronologyen_US
dc.subjectBowser River Watersheden_US
dc.subjectCoast Mountainsen_US
dc.titleHolocene glacial history of the Bowser River Watershed, Northern Coast Mountains, British Columbiaen_US
dc.typeThesisen_US

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