Abstract
The combined application of fission track analysis and neutron activation‐induced β‐autoradiography to map the trace element distributions of scandium, cobalt, uranium and rare earth elements in fossil bone samples from East Africa is described. Both uranium and the rare earth elements are incorporated into bone apatite during fossilisation, whereas scandium and cobalt occur additionally in any iron‐manganese minerals precipitated in pore spaces within the bone cortex. The distribution of uranium is different from that of the rare earth elements in the fossil bone cortices; it enters fossil bone more rapidly and is sensitive to changes in the redox potential of the palaeogroundwater.
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