Changes

For example, with [[Uranium-lead dating]] with the crystallization of magma, this remains a closed system until the uranium decays.  As it decays, it disrupts the crystal and allows the lead atom to move.  Likewise, heating the rock such as [[granite]] forms [[gneiss]] or [[basalt]] forms [[schist]].  This can also disrupt the ratios of lead and uranium in the sample.

For example, with [[Uranium-lead dating]] with the crystallization of magma, this remains a closed system until the uranium decays.  As it decays, it disrupts the crystal and allows the lead atom to move.  Likewise, heating the rock such as [[granite]] forms [[gneiss]] or [[basalt]] forms [[schist]].  This can also disrupt the ratios of lead and uranium in the sample.

Dating metamorphic rocks has lead to incorrect dating of the Grand Canyon by the RATE Project (Radioisotopes and the Age of the Earth).<ref>[http://www.icr.org/index.php?module=articles&action=view&ID=42 Radioisotope Dating of Grand Canyon Rocks: Another Devastating Failure for Long-Age Geology] (Note: be sure to make note of the first sentence of the second paragraph)</ref><ref>[http://www.answersincreation.org/ratedeception.htm Critique of RATE's methods] Answers in Creation</ref>

Dating metamorphic rocks has led to incorrect dating of the Grand Canyon by the RATE Project (Radioisotopes and the Age of the Earth).<ref>[http://www.icr.org/index.php?module=articles&action=view&ID=42 Radioisotope Dating of Grand Canyon Rocks: Another Devastating Failure for Long-Age Geology] (Note: be sure to make note of the first sentence of the second paragraph)</ref><ref>[http://www.answersincreation.org/ratedeception.htm Critique of RATE's methods] Answers in Creation</ref>

==Some major methods of radiometric dating==

==Some major methods of radiometric dating==