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Table 4.6 – OSL age calculations<br />

Sample Site Sample Subsurface No. <strong>of</strong> U Th k Cosmic Radiation Paleodose Water Content (%) Dose Rate Age<br />

Depth (m) Aliquots (ppm) (ppm) (%) Dose (Gy/ka) (Gy) Measured Assumed Mean (Gy/ka) (ka)<br />

SVI002 072304-04B 3.46 13 0.26+/-0.04 0.39+/-0.14 0.06 0.13 0.88+/-0.07 21.6 20+/-5 0.25+/-0.01 3.5+/-0.3<br />

SVI003 072304-05 1.93 14 0.27+/-0.03 0.30+/-0.12 0.05 0.16 0.62+/-0.06 19.9 20+/-5 0.27+/-0.01 2.3+/-0.2<br />

SVI003 072304-06 1.37 20 0.23+/-0.02 0.42+/-0.10 0.01 0.17 0.65+/-0.10 2.3 20+/-5 0.25+/-0.01 2.6+/-0.4<br />

SVI003 072304-07 0.82 15 0.61+/-0.07 0.96+/-0.27 0.02 0.19 0.95+/-0.08 5.6 20+/-5 0.37+/-0.02 2.6+/-0.3<br />

SVI004 072304-08 2.75 13 0.33+/-0.04 0.36+/-0.15 0.04 0.14 0.63+/-0.07 17.0 20+/-5 0.26+/-0.01 2.5+/-0.3<br />

SVI015 050605-01 2.04 19 0.80+/-0.04 0.39+/-0.19 0.08 0.159 1.59+/-0.09 8.05 20+/-5 0.4+/-0 4.1+/-0.3<br />

SVI023 011006-16 1.426 17 0.58+/-0.05 0.63+/-0.22 0.02 0.197 0.43+/-0.02 4.4 20+/-5 0.4+/-0 1.2+/-0.1<br />

SVI024 011006-19 1.722 18 0.34+/-0.02 0.34+/-0.11 0.04 0.1661 0.11+/-0.01 26.2 20+/-5 0.3+/-0 0.4+/-0.0<br />

SVI025 011106-02 1.389 18 0.33+/-0.03 0.48+/-0.13 0.05 0.1736 0.23+/-0.02 27.8 20+/-5 0.3+/-0 0.8+/-0.1<br />

SVI019 010906-02 beach surface 7 - - - - 0 - 20+/-5 - 0<br />

77<br />

* OSL age includes two-sigma uncertainty due to systematic errors such as inhomogeneous bleaching, disc to disc variations in<br />

paleodose, errors due to counting statistics in alpha counters, errors due to curve fitting <strong>and</strong> water content.<br />

* All OSL measurements <strong>and</strong> age calculations were done at <strong>the</strong> University <strong>of</strong> Georgia Luminescence Laboratory

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