Intercomparison of 10Be measurements by decay and Accelerator mass spectrometry (AMS) techniques for layers inside ferromanganese crusts of the Pacific Ocean (ANTP-058D and ARIES-039D)

Cosmogenic beryllium-10 activities have been measured in marine accumulations of up to about 6 m.y age by conventional beta counting technique and by accelerator mass spectrometry. The two sets of data at 10Be levels of 109-1010 atoms/g agree within the absolute errors of the two methods. The detection limit for 10Be by the accelerator mass spectrometry is about five orders of magnitude lower than that with the beta counting method.