Glacial Sediments Greased the Gears of Plate Tectonics

ENN
Jun 5, 2019, 3:47 pm247 pts
Earth’s outer layer is composed of giant plates that grind together, sliding past or dipping beneath one another, giving rise to earthquakes and volcanoes. These plates also separate at undersea mountain ridges, where molten rock spreads from the centers of ocean basins.

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