Radiometric dating volcanic rock

Sedimentary rocks may have radioactive elements in them, but they have been re-worked from other rocks, so essentially, there radiometric clock has not been re-set back to zero.However, sedimentary rocks can be age dated if a volcanic ash horizon or a diabase sill or dyke can be found within the sequence.For example, if you find a dinosaur bone in a sedimentary sequence and you find an ash layer 10 meter above the bone and another ash layer 20 meters below it, you can determine the age of the two ash layers.

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For example, creationist writer Henry Morris [Morris2000, pg.In a related article on geologic ages (Ages), we presented a chart with the various geologic eras and their ages.In a separate article (Radiometric dating), we sketched in some technical detail how these dates are calculated using radiometric dating techniques.If igneous or metamorphic ( though metamorphic rock is hard to do ) radiometric dating can be used.The radioactive substance that may be in igneous rock devolves into a daughter substance and the rate of this change, coupled with…

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