Research Papers On Pangea

Research Papers On Pangea-17
"Australia is moving north, and is already colliding with the southern islands of Southeast Asia," he continued."If we project that motion, the left shoulder of Australia gets caught, and then Australia rotates and collides against Borneo and south China -- sort of like India collided 50 million years ago -- and gets added to Asia." Meanwhile, the Americas will be moving further away from Africa and Europe as the Atlantic Ocean steadily grows.

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[more information] That part of the prediction is fairly certain, because it is just the continuation of existing motions.

Beyond about 50 million years into the future, prediction becomes more difficult.

This "slab pull" theory for the mechanism driving the motion of the plates stands in opposition to the older "river raft" theory.

"For a long time, geologists had this model that there were 'conveyer belts' of mantle convection, and the continents were riding passively on these conveyer belts, sort of like a raft on a river," Scotese said.

At a subduction zone, the ocean floor dives under the edge of a continent and down into the interior of the Earth.

"The subduction zone turns out to be the most important part of the system if you want to understand what causes the plates to move," Scotese said.

And we have to try to understand what causes those changes.

That's where we have to make some guesses about the far future -- 150 to 250 million years from now." In the case of the widening Atlantic, geologists think that a "subduction zone" will eventually form on either the east or west edges of the ocean.

Plus, get practice tests, quizzes, and personalized coaching to help you succeed.

Try it risk-free The continents you know have existed for a long time, but not in their current locations.

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