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Auxiliary material for this article contains noble gas elemental concentrations, inverse fitting noble gas temperatures and calibrated calendar ages for all groundwater samples, statistical discussion of climatic events, percent snow contribution using stable isotopic data, impact of dispersion on preservation of climatic signals from the Younger Dryas and Mid-Holocene, and plots of calendar age vs. recharge distance.

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Additional file information is provided in the readme.txt.

FilenameFormatSizeDescription
grl29594-sup-0001-readme.txtplain text document12Kreadme.txt
grl29594-sup-0002-txts01.docWord document71KText S1. Discussion of NGT model results for all Saginaw samples and compatibility between Saginaw and Marshall NGT records.
grl29594-sup-0003-txts02.docWord document31KText S2. Determining calibrated calendar groundwater ages for all Saginaw samples.
grl29594-sup-0004-txts03.docWord document34KText S3. Statistical analysis of abrupt climatic events.
grl29594-sup-0005-txts04.docWord document34KText S4. Impact of dispersion on preservation of climatic signals from the Younger Dryas and Mid-Holocene in the Saginaw aquifer.
grl29594-sup-0006-ts01.xlsExcel spreadsheet28KTable S1. Sample numbers, location, distance from recharge area and measured Ne, Ar, Kr and Xe elemental concentrations.
grl29594-sup-0007-ts02.xlsExcel spreadsheet33KTable S2. Measured stable isotopic composition of Saginaw and Marshall aquifer samples from all sampling sites along with measured carbon isotopic data.
grl29594-sup-0008-ts03.pdfExcel spreadsheet50KTable S3. Measured major ion data along with calculated aqueous carbonate speciation.
grl29594-sup-0009-ts04.xlsExcel spreadsheet53KTable S4. Results of inverse fitting measured noble gas concentrations for all Saginaw samples using the unfractionated air and oxygen depletion models assuming a recharge altitude of 275m, 0g/l salinity.
grl29594-sup-0010-ts05.pdfExcel spreadsheet50KTable S5. Percent contribution of snow vs. precipitation for all Saginaw and Glacial Drift aquifer samples based on stable isotope data.
grl29594-sup-0011-fs01.epsPS document633KFigure S1. Comparison of CE and UA model NGTs for all Saginaw and Marshall aquifer samples younger than the LGM.
grl29594-sup-0012-fs02.epsPS document563KFigure S2. Chi squared fits to entire suite of groundwater samples with ages less than LGM for varying OD model factor, POD.
grl29594-sup-0013-fs03.epsPS document588KFigure S3. Calendar age as a function of distance from recharge area for all Saginaw samples used in the paleoclimatic reconstruction in this study.
grl29594-sup-0014-fs04.epsPS document598KFigure S4. Calendar age as a function of distance from recharge area for all Marshall samples used in the paleoclimatic reconstruction in this study.

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