Figure 3. A cartoon diagram of how an exposure model represents the change in depth through time for a sample collected for cosmogenic nuclide analysis. The black lines represent different paths that a sample in an unconsolidated deposit could have traveled relative to the surface. Because the production rate of cosmogenic nuclides depends on the depth of a sample, we can integrate these depth through time curves to make unique predictions about the concentration of cosmogenic nuclides in the samples that we measure. In this manner, we can determine the stability, erosion rate, and potential for mixing and burial at the sample site.
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Uploaded: Dec8 09