Coral dating uranium thorium
NUPEX also aims to explain why many of the applications of nuclear physics seem to be a little controversial, such as the growing use of nuclear power plants and explain whether or not the sceptics' fears can be validated.
Thus, the lead isotopic composition of any mineral or rock depends upon its age and the environment from which it was formed; that is, it would depend upon the ratio of uranium plus thorium to lead in the parent material.As noted above, the variable uranium isotope fractionations observed in fresh-water systems preclude its application there.In addition, pelagic sediments are ruled out by open-system behaviour of uranium after deposition (Ku, 1965), while mollusc shells also tend to take up uranium after deposition (Kaufman et al., 1971).The information on this site is interesting and easy to understand, with helpful visual aids and explanations at every step of the way.Plus, the site is extremely easy to use, to encourage pupils to explore the information here on their own.NUPEX provides a free database of knowledge, created and maintained by expert nuclear physicists from all over Europe.
NUPEX aims to provide teachers and students with reliable, up-to-date information on nuclear science in several major European languages.
Thus all the lead in the zircon can be assumed to be radiogenic.
Nuclear Physics is the study of the properties and behaviour of nuclei and particles, ranging from tiny quarks to giant explosions deep in space.
Uranium 238 decays through a series of steps to Lead 206.
Uranium 235 decays to lead 207, and Thorium 232 decays to lead 208.
The Earth can be assumed to be a very large sample containing lead evolving from primordial lead by radiogenic increments.