Sedimentary dating

The discoveries from Yellowstone park could affect how certain sequences of sedimentary rock are dated, and and also provide a means by which scientists can search for evidence of life on other planets.

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This can not only be done with sedimentary rocks collected from the Earth's surface but also with rocks from other planets.Carbon-14 is a method used for young (less than 50,000 year old) sedimentary rocks.This method relies on the uptake of a naturally occurring radioactive isotope of carbon, carbon-14 by all living things.So abundant, in fact, that it accounts for about 4% by weight of the Earth's crust.Calcium carbonate takes several different geological forms.

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