I don know
igneous rock
Molten rock at mid-ocean ridges is the result of sea-floor spreading. WRONG
Paleomagnetism :)
The mid-ocean ridges are made almost entirely of basalt, because this is where new oceanic lithosphere is being formed. In fact, oceanic plates in there entirety are made up almost entirely of basalt.(igneous rock)
Sorry for this late response,but basically, as the plates move farther away from the mid-ocean ridges, the older it gets..! Hope this helps! ^^
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