Definition of mid-ocean ridge
: an elevated region with a central valley on an ocean floor at the boundary between two diverging tectonic plates where new crust forms from upwelling magma
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The mid-ocean ridges on the seafloor, however, keep records.
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The mid-ocean ridges erupt large volumes of magma, while the Deccan Traps eruptions flood lava across much of the Indian subcontinent.
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However, this is only true for the faster-spreading mid-ocean ridges of the Pacific and Indian Oceans.
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This phenomenon may have resulted from repeating pulses of volcanism along mid-ocean ridges, which previous research has linked to cycles of ice ages and warming.
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This new magma percolates its way to the surface and fuels nearly continuous volcanic activity along what are known as mid-ocean ridges.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'mid-ocean ridge.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use of mid-ocean ridge
1961
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