The most widely known form of radiometric dating is carbon14 dating this is what archaeologists use to determine the age of humanmade artifacts but carbon14 dating wont work on dinosaur bones the halflife of carbon14 is only 5730 years so carbon14 dating is only effective on samples that are less than 50000 years old.
carbon dating sedimentary rock fossils cant form in the igneous rock that usually crochet piggy booties does contain the isotopesthe extreme temperatures of the magma would just destroy the bonesso to determine the age of sedimentary rock layers researchers first have to find neighboring layers of earth that include igneous rock.
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.
Carbon14 is a method used for young less than 50000 year old sedimentary rocks this method relies on the uptake of a naturally occurring radioactive isotope of carbon carbon14 by all living things.
If a layer of igneous rock forms on top of the sedimentary rock scientists determine an age bracket for the rock sample but not an absolute age the us geological survey states that it is possible to use carbon14 radiometric dating for sedimentary rock younger than 50000 years by dating once living material from the sediment.
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Sedimentary layers of rock found all over the world are attributed by evolutionists to the melting of a glacier at the end of the ice age my bias tells me that these sedimentary layers are the result of flood waters scouring across the land.