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Geography, 26.09.2019 19:10 jhaveen8335

The oldest material found on earth is a zircon grain that is 4.12 ga. how come there are no rocks that are the same age as earth (4.54 ga)?

(a) no rocks formed during that time.
(b) all rocks from that age have been recycled.
(c) earth is not that old.
(d) we just have not found them yet.

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