The majority of the landmass in the world sits on continental crust, but the Hawaiian Islands are the best. The islands owe their existence to volcanoes – they are basically the tops of massive volcanic mountains poking over the ocean surface.
The pattern of the Hawaiian Islands forming a chain of islands running to the northwest is for a specific reason. The hawaiian islands of Hawaii are located above the Hawaiian hotspot – it's a volcanic hotspot that's accountable for the huge 6,200-kilometer (3,900 mi) Hawaiian-Emperor seamount chain. The majority of the chain is underwater. It extends from the island of Hawaii to near Russia at the edge of the Aleutian Trench.
What The Hawaiian Hotspot Is
The hotspot is really a plume of magma-molten rock-puncturing Earth's crust and extending hundreds of kilometers below Earth's surface.
The Hawaii Hotspot is one of the most intensively studied hotspots in the world. You are able to to have four active volcanoes, two dormant volcanoes, and over 123 extinct volcanos. Many of these aren't atolls or seamounts.
- Active: 4 Active Volcanoes
- Dormant: 2 Dormant Volcanoes
- Extinct: 123 Extinct Volcanoes (At Least)
As the plate slides within the hotspot the volcanoes move passed it. Then they become extinct and weathered and finally erode back into the ocean. New volcanoes form as new crust moves over the hotspot.
The Hawaiian Hotspot is now considered to be 500 to 600 km (310 to 370 mi) wide and up to 2,000 km (1,200 mi) deep. It's considered to happen to be active for at least 70-85 million many the chain's rate of drift has slowly been increasing with time. This acceleration has decreased how long each volcano spends over the spot.
- Hawaiian-Emperor Chain: 6,200-kilometer (3,900 miles) Long
- Age: The Spot Is 70-85 Million Years of age
- Movement: Around 7 cm or 2.75 Inches Per year
While the 76 million-year-old Detroit Seamount is thought to have spent 18 million years regarding this, one million-year-old Kohala has only spent 900,000 years regarding this. At the same time, the volcanoes have grown to be more active while within the hotspot.
- Amount Of Lava Erupted: 186,000 Cubic Miles
An effect of this is creating quickly-silenced, closely spaced volcanoes overlapping one another forming superstructures as Hawaii island. The amount of lava that's been erupted within the lifetime of the Hawaiian Hotspot is sufficient to cover the State of California with a layer 1 mile thick.
Notable Volcanoes From the Hotspot
The mountains are giants – but many seem to be not visible because they are underwater. Some are over 30,000 feet over the seafloor. They're only the tips of the proverbial icebergs. So much in fact that if they were to become measured from their base in the ocean but for the island of Hawaii to be considered “mountain” they would be the world's tallest.
- Active Volcanoes: Kilauea, Mauna Loa, Hualalai, Haleakala, and Kama'ehuakanaloa (submarine)
Mauna Kea Volcano comes with an altitude of 13,796 feet – nevertheless its base is around 18,000 feet below sea level, taken together it's over 1,000 feet taller than Mount Everest.
- Mauna Kea Volcano: Could be Regarded as Taller Than Mount Everest
- Kīlauea: The Youngest And Most Active Volcano
- Mauna Loa: The biggest Volcano On the planet
- Hualālai: The Third-most Active Volcano Around the Island of Hawaii
- Kama'ehuakanaloa: (formerly Lō'ihi Seamount) The Only Known Active Hawaiian Submarine Volcano
- Haleakalā: The only real Active Volcano On Island of Maui
These are the most impressive volcanoes in the world – Iceland is another hotspot and also boasts awe-inspiring volcanoes.
Future Of Hawaii – The brand new Island of Loihi
Big Island is the youngest the hawaiian islands and that is where volcanic activity continues to be occurring. Eruptions are occurring on the island's southern shore.
- Oldest Island: Kauai May be the Oldest from the Hawaiian Islands
- Youngest: Big Island Is The Youngest of The Hawaiian Islands
Kauai is the oldest the hawaiian islands and it is no longer over the hotspot and so will no longer have any active volcanoes. Kilauea isn't the only volcano on the Big island of hawaii. There's also Kohala, Mauna Kea, Hualalai, and Mauna Loa. Of those four volcanoes, only Hualalai and Mauna Loa are active. Two of these active volcanoes have been in the stunning Hawai'i Volcanoes National Park.
Eventually, Hawaii will be accompanied by another island called Loihi. This future island has already grown by thousands of meters (yards), but it's still roughly 1,000 meters (3,280 feet) underneath the top of the Pacific Ocean. Scientists accept is as true will emerge between 10,000 to 100,000 years from now.
- Loihi: The Future Island Which will Emerge Between 10,000 and 100,000 Years From Now
- Depth: The near future Island Remains to be 1,000 meters (3,280 feet) Underneath the Surface
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