Can radioactive dating used metamorphic rocks


24-Jul-2020 11:19

Sedimentary rock on the other hand consists of sedimentary particles which were removed and deposited somewhere else by some sort of fluid (generally wind and water).The sedimentary particles predate the rock which they form.It is not affected by external factors such as temperature, pressure, chemical environment, or presence of a magnetic or electric field.

In these cases, usually the half-life of interest in radiometric dating is the longest one in the chain, which is the rate-limiting factor in the ultimate transformation of the radioactive nuclide into its stable daughter.Dating the particles which make up the rock wouldn’t give you the age of the rock itself.In addition, the redeposition process upsets the conditions necessary to achieve accurate results through radiometric dating.The basic equation of radiometric dating requires that neither the parent nuclide nor the daughter product can enter or leave the material after its formation.

The possible confounding effects of contamination of parent and daughter isotopes have to be considered, as do the effects of any loss or gain of such isotopes since the sample was created.

While the moment in time at which a particular nucleus decays is unpredictable, a collection of atoms of a radioactive nuclide decays exponentially at a rate described by a parameter known as the half-life, usually given in units of years when discussing dating techniques.