Tuesday, April 7, 2009
Pangea
Many people didn't believe that there was a supercontinent called Pangea a long time ago. Now archaeologists and scientists found evidence that supports this idea. Fossils of the same living being were found on different continents separated by miles of ocean. They could not have swam the distance. The continents must have moved due to continental drift causing Pangea to break apart. What's causing these lithospheric plates to move? The convection currents inside the mantle are. Hot substances rise and cooler substances sink. The plates move about 1 cm per year! Also, when you study a map, you might have noticed that some of the continents fit together perfectly like a giant jigsaw puzzle. Lastly, the same natural resources such as coal were found on where the continents used to fit together.
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This is an awesome blog! It has a lot of information on plate tectonics!
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