Beryllium-10 in a Manganese Nodule

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Science  02 Jun 1967:
Vol. 156, Issue 3779, pp. 1219-1220
DOI: 10.1126/science.156.3779.1219


Analyses of beryllium-10 activity in two sections of a manganese nodule indicate an accumulation rate that compares well with such rates measured by other methods on different nodules. The observed specific activity of beryllium-10 in the nodule is in accord with the calculations based on the production of beryllium-10 by cosmic rays in the atmosphere and with the geochnemistry of beryllium in the ocean.