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How old is the oldest rock?

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Anonymous

9y ago
Updated: 4/6/2022

The oldest rock of terrestrial origin (i.e. the whole rock was formed here on Earth at the same time) is the Nuvvuagittuq greenstone in Canada. It has been dates as 4.28 billion years old.

The oldest single thing yet found that is known to have been formed on Earth is a zircon crystal which was located in Western Australia within a metamorphic gneiss which was part of the Narryer Gneiss Terrane. It has been dated at 4.404 Ga (4.404 billion years old) however the rock it is in is younger than this.

The oldest rock ever found on Earth is actually a meteorite so was not formed here. It is estimated to have an age of around 4.56 billion years so is roughly the same age as the Earth.

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Eino Rolfson

Lvl 13
3y ago

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