Moreover, a large number of physical processes, such as neutron capture and fluctuations in solar radiation, affect the rate of radioactive decay of elements in the Earth's crust and render radioactive dating measurements unreliable, depending upon the specific methods used.<ref>http://www.sciencedirect.com/science/article/pii/S0899536205000138#bib6</ref> | Moreover, a large number of physical processes, such as neutron capture and fluctuations in solar radiation, affect the rate of radioactive decay of elements in the Earth's crust and render radioactive dating measurements unreliable, depending upon the specific methods used.<ref>http://www.sciencedirect.com/science/article/pii/S0899536205000138#bib6</ref> |