Archive > Volume 35 Issue 2 > 1998,35(2):266-275. DOI:10.11766/trxb199608130216 CSTR:[cstr] Prev Next
DISTRIBUTION OF COSMOGENIC 7Be IN SURFACE SOILS OF MOUNTAIN REGION AND THE PRINCIPLES FOR EROSION TRACE
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Abstract:
Beryllium-7, a cosmogenic nuclide, has stable sources in origin and half-life of 53.3 days, which provide essential conditions as a geochemical tracer for seasonal particle transport in the environment. A major portion of 7Be (about 95%) in the soils is bound to organic, Fe-Mn oxides and residual fractions. It can be removed with soil particle transport and be used to trace suil erosion. The characteristics of 7Be vertical distribution in the soil profiles provide sufficient evidence for trace of seasonal particle transport. 7Be inventory, apparent activity and maximum penetrative depth in soil cores as well as relative erosion or accumulation rate can be taken as trace parameters for sail ernsion.
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