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Tracing the Source of the Elephant And Hippopotamus Ivory from ...

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Figure 63: Map <strong>of</strong> <strong>the</strong> Libyan Desert (hatched). Location <strong>of</strong> sampled sandstones<br />

indicated by arrow. Notice also <strong>the</strong> location <strong>of</strong> <strong>the</strong> BP and Oasis crators (Schaaf et al.<br />

2002: 566).<br />

Figure 64: Strontium isotope ratios <strong>of</strong> sandstone samples <strong>from</strong> BP and Oasis craters<br />

(Libya) and 5 sandstone samples <strong>from</strong> <strong>the</strong> LDG strewn field compared to Precambrian<br />

granitic rocks <strong>from</strong> nor<strong>the</strong>ast Africa west <strong>of</strong> <strong>the</strong> Nile (shaded area) (Schaaf et al. 2002:<br />

573, figure 7).<br />

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