In both cases, modern exploration methods, especially improvements in the ability to trace and analyze kimberlite indicator minerals such as pyrope garnet, chromite and chrome-diopside, have led to significant discoveries.
The main reason Canada attracts more diamond exploration spending than any other part of the world is because the county is blessed with large cratons, ancient stable parts of the earth's crust that are prospective for kimberlites.
Uranium-lead dating techniques have also been applied to other minerals such as calcite/aragonite and other carbonate minerals.
These minerals often produce lower precision ages than igneous and metamorphic minerals traditionally used for age dating, but are more common in the geologic record.
Thus, if we start out with 1 gram of the parent isotope, after the passage of 1 half-life there will be 0.5 gram of the parent isotope left.
After the passage of two half-lives only 0.25 gram will remain, and after 3 half lives only 0.125 will remain etc.
Where this is not the case, a correction must be applied.
Radiometric dating, or radioactive dating as it is sometimes called, is a method used to date rocks and other objects based on the known decay rate of radioactive isotopes.
Different methods of radiometric dating can be used to estimate the age of a variety of natural and even man-made materials.
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