Atmospheric 10Be in an Antarctic soil: Implications for climate change
Schiller, M.; Dickinson, W.; Ditchburn, R. G. ; Graham, I. J. ; Zondervan, A.
(2009)
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.
114:
F01033.
Abstract:
Link to Publication:
Abstract:
Concentrations of 10Be, 9Be, and salt in a soil profile from the lower Wright Valley reveal two distinct climatic regimes. In the upper horizon of the soil profile, a thin gravel lag overlies the Hart ash (3.9 ± 0.3 Ma), and this sits on the surface of a well-developed paleosol, which makes up the lower horizon of the profile. The surface lag has a smaller inventory of 10Be than predicted from the fallout rate at nearby Taylor Dome. Below the gravel, the Hart ash is virtually devoid of 10Be and the calculated erosion rate for the gravel-ash horizon is 2.8 m Ma
