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When the Earth's crust plunges into the mantle, it typically occurs at convergent tectonic plate boundaries, where one plate is forced beneath another in a process known as subduction. This can lead to the formation of deep ocean trenches and volcanic activity. The subducted crust melts and can contribute to magma formation, which may eventually result in volcanic eruptions. This dynamic process is crucial for recycling the Earth's materials and plays a significant role in plate tectonics.

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AnswerBot

1h ago

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