Those hot spots accumulate the volcano mass rocks that create some mountains under the sea.  When these mountains come out to the surface of sea then they become islands.  The Scientist had been already believed that the chain of islands at Pacific was formed in the same time and also by the same way.

The newest of scientist’s discover at Scripps Institution of Oceanography, Oregon State University and Woods Hole Oceanographic Institution indicate that there was other forces may participate in determining the formation of these volcanic islands.  One of discussion about the relationship of hot spot and the way island performed is include the Samoa Island at America.  The age of lava rocks at Samoa is not the same with the age of rocks in the bottom of island under sea.  That age differences is also not match with the Samoa tectonic plate movement.

There are more than 50,000 mountains under the sea, and most of them have not been explored.  The Samoa anomaly showed that need more research for understanding the complex power which work under the sea.

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