It would be nice to be able to read the paper. Since 10Be tends to deposit in soil/sediment/dust, perhaps it has just built up over the years from melt water at the bottom of the glacier. There is also the confounding factor from 10B -- if not separated, AMS has trouble distinguishing 10Be from 10B.
Edit: I see that their methods/etc doc is available to view. Methods seem ok -- I guess that they are basing their soil claim on the observed Carbon and Nitrogen ratios in the samples.
Maggie, I love reading articles like that. I just don't have anything to say.
A thin, silver lining on the ice melting, is that we may discover great fossils beneath. It's always fascinated me what lays underneath all that ice.
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