26al10be dating

It then explores to what extent this information can be used to learn about past ice sheet change.

Normally sediment above 5 meters in depth encounters is not acceptable for this type of technique.The 26Al nuclide produces six times faster than 10Be nuclide which makes calculating decay rates less tenuous.The results of the cosmogenic testing resulted in a sequential set of dates.They are most easily explained by a scenario in which: i) sites more than , and ii) sites near the present ice margin experienced similar erosion rates when ice-free, but have been covered by cold-based, non-erosive glacier ice as much as half of the time during the past several million years.Nuclide concentrations in granite bedrock at a site in the Quartz Hills near 85°S, on the other hand, have not reached production-erosion equilibrium, thus retaining evidence of the time they were first exposed to the cosmic ray flux.

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