Explain the hypothesis know as the …
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Yogita Ingle 5 years, 1 month ago
Sea-floor spreading — In the early 1960s, Princeton geologist Harry Hess proposed the hypothesis of sea-floor spreading, in which basaltic magma from the mantle rises to create new ocean floor at mid-ocean ridges. On each side of the ridge, sea floor moves from the ridge towards the deep-sea trenches, where it is subducted and recycled back into the mantle . A test of the hypothesis of sea-floor spreading was provided by studies of the Earth's magnetism.
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