Age of the Earth - Wikipedia Age of the Earth - Wikipedia

Relative age dating rocks, a response to “scientific” creationism

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Nonetheless, stratigraphy and radiometric dating of Precambrian rocks have clearly demonstrated that the history of the Earth extends billions of years into the past. It happens in all sciences.

Because the Bible indicates the earth is young about 6, years oldthis large Relative age dating rocks of nuclear decay must have occurred at much faster rates than those measured today. The assumption that there has been no loss or gain of the isotopes in the rock assumption 2 does not take into account the impact of weathering by surface and ground waters and the diffusion of gases.

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The starting isotope is called the parent and the end-product is called the daughter. Since Free dating for 50+ magma generally has old radiometric ages, I don't see how we could have magma without Pb or Sr.

The isochron dating method theoretically overcomes the need to know the initial ratio of parent and daughter isotopes.

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Stratigraphic position is an obvious one, but there are many others. Bulletin of Canadian Petroleum Geology, v.

Dating Methods | Answers in Genesis

In general, when lava cools, various minerals crystallize out at different temperatures, and these minerals preferentially include and exclude various elements in their crystal structures. John Wiley and Sons: Then any lava under water would appear older because its enclosed Ar40 would have more trouble escaping.

Geochronologists use the branching ratio as a semi-emperical, adjustable constant which they manipulate instead of using an accurate half-life for K Possible other sources of correlation Note that if there are small pockets in crystals where both parent and daughter product can accumulate from the lava, then one can inherit correlated ages from the lava into minerals.

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The relationship between the data obtained and a specific event must be known. If a rock has been partially melted, or otherwise metamorphosed, that causes complications for radiometric absolute age dating as well. Let's also only include rocks which are considered datable by at least one method, since some rocks I believe limestone are considered not to hold argon, for example.

Circular Reasoning or Reliable Tools?

Comparing the amount of a parent isotope to the amount of its daughter isotope and knowing the rate of change from parent into daughter known as the half-lifethe age of the rock can be determined. A Geologic Time Scale, edition.

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So magma should have at least 20 times as much argon as a rock million years old by K-Ar dating. Literally many tens of thousands of radiometric age measurements are documented in the scientific literature.

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Stratigraphy, sedimentology, and vertebrate paleontology of the Judith River Formation Campanian near Muddy Lake, west-central Saskatchewan.