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Where is the oldest sea floor found?


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2011-11-12 10:03:39
2011-11-12 10:03:39

The oldest in-situ oceanic lithosphere is found at lithospheric subduction zones, where oceanic crust is being drawn into the mantle. These would normally be the point furthest away from its point of origin at the mid-ocean ridge.

However the oldest remnant of oceanic crust found on earth dates from the early Archean when the lithosphere began to develop and are a product of obduction (where slivers of oceanic crust are thrust onto a continental crustal plate rather than below them). An example would be the Jamestown Ophiolite Complex of the Barberton greenstone belt in South Africa which formed approximately 3.5 billion years ago.

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They found that the youngest rocks on the sea floor were at mid-ocean ridges and the oldest were further away from the ridges.

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No. The sea floor is much younger than the continents. The oldest sea floor is about 200 million years old. The continents are billions of years old.

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