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The Hawaiian Island-Emperor Seamount chain

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The Hawaiian Island-Emperor Seamount chain

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Before the formation of any islands, the Hawaiian Island-Emperor Seamount chain existed and it would serve as the beginning to the Hawaiian island chains.

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Magma made up of Alkalic basalt erupts and solidifies on the Sea Floor

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As the volcano reaches the ocean surface, it begins to let out gasses that are made from the magma. These gasses contain Carbon Dioxide, Oxygen, and Hydrogen Sulfide.

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The magma goes through a change in chemistry in which basalt begins to be formed. The mixing of the magma causes for summit of the volcano to collapse.

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As the volcano moves from the center of the hot spot, the chemical composition of the magma and its eruptions change. They become composed of Alkalic Basalt, which is commonly found in many volcanoes today.

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As soon as a volcano rises above the ocean surface, it begins to erode. Volcanoes that have gone through all other phases don't change much outside of erosion. Things like mega-landslides are what shape these islands the most.

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Land around the islands begin to form reefs for sea life to live in. However, after the most intensive erosive phase, the volcano will start to erupt. It will typically produce cinder cones and volcanic ash that rejuvenates the volcanoes.

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After the final eruption, the lithosphere cools down and becomes denser, causing the island to start sinking. This will drag down coral reefs and drown them, marking the finale of a Hawaiian volcano's life cycle.

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Kauai is the oldest Hawaiian island. It was formed 5.1 Million Years ago and resides North of all Hawaiian islands.

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This Hawaiian island is west of Kauai and is 4.9 Million years old. This makes it the second oldest island.

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Oahu was formed 3 Million years ago and is the middle Hawaiian island.

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Molokai was formed 1.5 Million years ago while Maui was formed 1 Million years ago. Molokai lies north of Maui and is smaller than Maui.

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Hawaii is the biggest of the Hawaiian islands. However, it is also the youngest Hawaiian island since it was formed 500 thousand years ago. It is also the island that lays South of all other Hawaiian islands.

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