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04.03.2017, 13:50 - anyoshoes - Rank 6 - 1072 Posts
colleagues analyzed the times at which such mountains appeared and put together a detailed timeline of what happened as Rodinia began to break apart,
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.
They note that crustal plates began subducting around the edges of Rodinia right around the time of its breakup. That sucking down of crust caused the supercontinent to be pulled from all directions and eventually break apart,
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, Cawood and his colleagues wrote in Earth and Planetary Science Letters in September. “The timing of major breakup corresponds with this timing of opposing subduction zones,
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,” he says.
Story continues after graphic

Subduction's drag


Supercontinents assemble (top) as pieces of continental crust amass. Later they may break apart (bottom) when slabs of plunging oceanic crust (light blue) begin pulling the continent from either side,
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, creating tensional forces that rift it apart.

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The future is Amasia
That stressful situation is similar to what the Pacific Ocean finds itself in today. Because it is flanked by subduction zones around the Ring of Fire,
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, the Pacific Plate is shrinking over time. Some geologists predict that it will vanish

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