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What term describes fragmental volcanic material?
Fragmental volcanic material is often referred to as pyroclastic or tephra, which includes ash, lapilli, and larger volcanic blocks and bombs produced during explosive volcanic eruptions.
Is a material magma?
No. Magma is molten rock that has not erupted. After it erupts it may or may not form pyroclastic material depending on how explosive the eruption is.
Is mount Etna an explosive eruption?
Yes, Mount Etna does have explosive eruptions. This is because the eruption releases pyroclastic material, made up of felsic lava which is rich in silicate materials. Therefore, causing the giant explosion!
Is a summit eruption like an explosive eruption?
A summit eruption can involve explosive activity, but not always. Summit eruptions can also involve effusive lava flows or steady emissions of ash and gas. The specific type of eruption depends on factors such as the magma's composition, gas content, and the volcano's plumbing system.
Is a non-explosive volcanic eruption more likely to produce lava or pyroclastic material?
Lava because pyroclastic material explodes from a volcano, Lava just runs down the surface of the volcano nonexplosive or explosive.
What is a volcano explosive index?
Volcanic explosive index is a measure of how explosive a volcanic eruption is based largely on the amount of material released. It ranges from VEI-0 for non explosive eruptions to VEI-8 for massive super eruptions.
What eruption type was the Krakatoa eruption in 1883?
The Krakatoa eruption in 1883 was a Plinian eruption, which is a highly explosive volcanic event characterized by the eruption of vast amounts of ash and volcanic material into the atmosphere. The eruption of Krakatoa was one of the most powerful volcanic explosions in recorded history.
What is a VEI index?
VEI is the volcanic explosivity index. It rates the severity of explosive volcanic eruptions based on the volume of material ejected and the height of the eruption plume. The scale ranges from VEI 0, indicating a non-explosive eruption, to VEI 8, indicating a super eruption. Each step up the scale represents a tenfold increase in the size of the eruption.
What is the usually explosive discharge of steam and volcanic material in a volcano?
The event is called an eruption.
How fast can an explosive eruption demolish a mountainside?
An explosive eruption can demolish a mountainside within minutes to hours, depending on factors such as the size of the eruption, type of volcanic material ejected, and the stability of the mountain. The force and speed of the explosion can rapidly disintegrate and erode the mountain's structure, causing large-scale devastation.
Is the eruption of a cinder cone volcano loud?
Cinder cone volcanoes typically have explosive eruptions that can be loud due to the release of gas and volcanic material under pressure. The loudness can vary depending on the size and intensity of the eruption.
What is a fragmental sedimentary rock?
A fragmental sedimentary rock is composed of fragments of pre-existing rocks or minerals that have been eroded, transported, and deposited. These fragments, known as clasts, can vary in size and are typically held together by a cementing material. Examples of fragmental sedimentary rocks include sandstone, conglomerate, and breccia.
