The lava that flows from both types of eruptions is very hot, thin, and runny which allows for fast flowing lava flows. The main difference lies in the fact that most Hawaiian eruptions have the greatest quantity of lava pouring out of the main vent at the volcano's summit, not along side fissures.
These summit eruptions build the cone steeper and higher. The volcano above was formed from Hawaiian eruptions. Shield cones were named by Icelandic people because the cone's shape reminded them of a warriors shield layed down.
Shield cones form from hot, runny lava that is erupted from the the volcano through its summit and the many side vents and fissures throughout the volcano's flanks Sides. Shield cones are low, very broad, and gently sloping volcanoes. The volcano pictured above is Mauna Kea, which is located on the big island of Hawaii.
Mauna Loa, which is also on the big island, is the largest volcano on Earth and the tallest mountain in the world if measured from the floor of the ocean where it was formed. Mauna Loa is 13, feet above sea level but over 17, feet of mountain lies under the water. This volcanic mountain is over 30, feet tall from sea floor to the summit. Maua Loa started to form above the Hawaiian hot spot about one million years ago and broke the surface of the ocean about , years ago.
Strombolian and Vulcanian eruptions are more explosive than Icelandic and Hawaiian eruptions. Strombolian eruptions are named for the volcanic island off of the coast of Italy. Stromboli has erupted over many centuries almost constantly. Stromboli has been named the "Lighthouse of the Mediterranean" because it erupts every 20 minutes or so. Strombolian eruptions are short lived explosive eruptions that shoot very thick and pasty lava into the air along with bursts of steam and gas.
Strombolian eruptions usually produce little or no lava. Because of this the cones that are produced by this type of eruption is a very steep sided cone called a cinder cone. The photo shows a strombolian eruption taking place from a cinder cone. Cinder cones get their name from the material that forms them, cinders.
Cinder cones are the simplest volcanic formation. They form from explosions of red, hot magma cinders and ash. These cinders and ash settle around the main vent and build a steep sided cone.
Very little lava is erupted from a cinder cone. Cinder cones very rarely rise to more than 1, feet above the surrounding landscape. Cinder cones are known for their very violent, explosive, exciting eruptions. Paricutin in Mexico and Mt.
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There are a number of reasons why people live alongside volcanoes. Eruption styles Discovering Geology — Volcanoes. Explosive eruptions. Vanua Lava. Mount Garet. Manaro Voui. Benbow and Marum. Types of eruptions. Multiples types of eruption can occur at each of Vanuatu's volcanoes - the eruption type can vary minute to minute. The style of eruption depends on a number of factors, including the magma chemistry and content, temperature,. Vanuatu's volcanoes have different characteristics based on their style of eruption, geography, geology, structure,.
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