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dc.contributor.authorSletten, Hillary Rae
dc.date.accessioned2014-03-04T20:00:51Z
dc.date.available2014-03-04T20:00:51Z
dc.date.issued2011-05
dc.identifier.othersletten_hillary_r_201105_ms
dc.identifier.urihttp://purl.galileo.usg.edu/uga_etd/sletten_hillary_r_201105_ms
dc.identifier.urihttp://hdl.handle.net/10724/27304
dc.description.abstractMultiple lines of evidence from an aragonite and calcite stalagmite from northeastern Namibia combine to provide a 4600-yr record of climate change. U/Th-series dating indicates that three episodes of very slow deposition (S(n)), occurred at ca. 3000 to 2060 BP (S3), 1120 to 800 BP (S2), and 600 to 370 BP (S1). Each of these intervals of slower growth is coincident with greater δ13C and δ18O, a decrease in stalagmite width, deposition of aragonite, and variations in petrographic fabrics that indicate a positive correlation between greater δ13C and increased crystal widths. All three Sn periods show both in and out-of-phase relationships with other southern African paleoclimate records that suggest evidence of climate change within the Little Ice Age (AD 1300-1800) and before the Medieval Warm Period (AD 1000-1300), respectively. The synthesis is one the first high-resolution paleoclimate records for this region of Namibia.
dc.languageeng
dc.publisheruga
dc.rightspublic
dc.subjectHolocene
dc.subjectPaleoclimate
dc.subjectStalagmite
dc.subjectNamibia
dc.subjectPetrography
dc.subjectFabric
dc.subjectAragonite
dc.subjectCalcite
dc.titleA 4,600-year stalagmite high resolution geochemical and petrologic paleoclimate record for northeast Namibia
dc.typeThesis
dc.description.degreeMS
dc.description.departmentGeology
dc.description.majorGeology
dc.description.advisorBruce Railsback
dc.description.committeeBruce Railsback
dc.description.committeeDouglas Crowe
dc.description.committeeGeorge Brook


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