Plate Tectonics

What is the Earth's oldest rock?

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2010-05-13 12:43:50

Currently the oldest insitu rock layers of terrestrial origin

were discovered by Dr. Jonathan O'Neil and his colleagues, whose

work published in September of 2008, revealed rocks as old as

4.28 billion years of age in Northern Quebec, along the

Hudson's Bay coast, 40 km south of Inukjuak. This area is known as

the Nuvvuagittuq greenstone belt. They were dated by measuring the

decay of the element neodymium-142 which was present in the


However this is either the oldest rock material of Earth origin

or the oldest rock material found on Earth.

For further information, please see the related links below.

For information on the oldest material of terrestrial origin and

the oldest material found on Earth please see the related


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