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8 November, 23:53

6.

Which theory explains why rocks found on the ocean floor are younger than those found on continents?

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  1. 9 November, 02:55
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    It's a process called subduction; oceanic crust tends to get colder and denser with age as it spreads off the mid-ocean ridges. It gets so dense, that it sinks in the upper mantle (subduction). This is like a giant recycling system for the oceanic lithosphere.
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