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Line 20: − − 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>
→Outside influences: Remove claim supported by a bigoted reference.
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.
==Some major methods of radiometric dating==
==Some major methods of radiometric dating==