Radiometric dating technology dating burundi sites
During the alpha decay steps, the zircon crystal experiences radiation damage, associated with each alpha decay.
This damage is most concentrated around the parent isotope (U and Th), expelling the daughter isotope (Pb) from its original position in the zircon lattice.
This effect is referred to as discordance and is demonstrated in Figure 1.
If a series of zircon samples has lost different amounts of lead, the samples generate a discordant line.
Most people think that radioactive dating has proven the earth is billions of years old.
After all, textbooks, media, and museums glibly present ages of millions of years as fact.
Fission tracks and micro-cracks within the crystal will further extend this radiation damage network.
Fossils are generally found in sedimentary rock not igneous rock.
Sedimentary rocks can be dated using radioactive carbon, but because carbon decays relatively quickly, this only works for rocks younger than about 50 thousand years.
These fission tracks act as conduits deep within the crystal, providing a method of transport to facilitate the leaching of lead isotopes from the zircon crystal.
Loss (leakage) of lead from the sample will result in a discrepancy in the ages determined by each decay scheme.