Dating billion year old rocks

23-Feb-2017 17:09

Greenland boasts the Isua Supracrustal rocks (3.7 to 3.8 billion years old), while rocks in Swaziland are 3.4 to 3.5 billion years.Samples in Western Australia run 3.4 to 3.6 billion years old.In an effort to further refine the age of Earth, scientists began to look outward.

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cfm dating

Shards of that asteroid have been collected from the crater rim and named for the nearby Canyon Diablo.Although no rocks have been deliberately returned from Mars, samples exist in the form of meteorites that fell to Earth long ago, allowing scientists to make approximations about the age of rocks on the red planet.Some of these samples have been dated to 4.5 billion years old, supporting other calculations of the date of early planetary formation.Samples returned from the Apollo and Luna missions revealed ages between 4.4 and 4.5 billion years, helping to constrain the age of Earth.