Beryllium-10 in a manganese nodule.
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.
Somayajulu
B L
BL