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The formation of the Earth is something that most geologists now accept as being an event (or events) that took place 4.6 billion years ago. This age is met with some skepticism from others outside the discipline at times due to the application of the principles of radioactivity.

What other possible methods could geologists use to better support this age determination?

Assuming unlimited funds, what other techniques should geologists try to develop? Share your thoughts and experiment

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    1. Other possible methods that geologists could use to better support this age determination is Radiometric dating. Radiometric dating is " based upon the spontaneous breakdown or decay of atomic nuclei. Radioactive parent atoms decay to stable daughter atoms e.g. the carbon isotope decays to nitrogen and the uranium isotope decays to the lead isotope. The time required for half the original number of parent atoms to decay is called the half life. It follows that uranium-lead, potassium-argon, and Rubidium-Strontium decay can be used for very long time periods, whilst radiocarbon dating can only be used up to about 70,000 years. The K-Ar (potassium-argon) method is often used for rock dating. This uses a simple exponential decay formula linking the original number of parent atoms in rocks and minerals to the atoms now present, thereby enabling an estimate of geological age. Using radiometric techniques, the oldest dated minerals (4.0 - 4.2 billion years) are zircon crystals found in sedimentary rocks in western Australia" (The Age of the Earth, n.d.)

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School: New York University


To better support this age determination, the geologists could also use relative dating
which puts such an event in chronological order without requiring that some certain numerical
age is assigned to every single game. Numerical age of the earth can also be determined by the
use of radiometric dating methods, based on some of the natural radioactive decay of some
elements such as carbon and potassium, as a reliable...

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