Table of Contents
- 1 Which type of volcano erupts magma?
- 2 When a volcano erupts the rock that comes out is called?
- 3 What type of magma does a volcano have if it erupts quietly?
- 4 Which type of volcanic eruption involves both magma and water?
- 5 What type of rock is formed by weathering and erosion?
- 6 What kind of rock is formed when magma cools below the surface?
- 7 What are four types of volcanic eruptions?
- 8 What type of magma produces explosive eruptions?
Which type of volcano erupts magma?
Stratovolcanoes are more likely to produce explosive eruptions due to gas building up in the viscous magma. Andesite (named after the Andes Mountains), is perhaps the most common rock type of stratovolcanoes, but stratovolcanoes also erupt a wide range of different rocks in different tectonic settings.
When a volcano erupts the rock that comes out is called?
Magma is a molten and semi-molten rock mixture found under the surface of the Earth. When magma is ejected by a volcano or other vent, the material is called lava. Magma that has cooled into a solid is called igneous rock.
What are the types of volcanic eruption?
Types of eruptions
- Hydrothermal eruption. An eruption driven by the heat in a hydrothermal systems.
- Phreatic eruption. An eruption driven by the heat from magma interacting with water.
- Phreatomagmatic eruption.
- Strombolian and Hawaiian eruptions.
- Vulcanian eruptions.
- Subplinian and Plinian eruptions.
What type of magma does a volcano have if it erupts quietly?
1. Low-silica magma, called basaltic, is fluid and produces a quiet, nonexplosive eruption.
Which type of volcanic eruption involves both magma and water?
Volcanic eruptions vary widely in strength. On the one extreme there are effusive Hawaiian eruptions, which are characterized by lava fountains and fluid lava flows, which are typically not very dangerous. On the other extreme, Plinian eruptions are large, violent, and highly dangerous explosive events.
What type of magma erupts out of dome complexes?
Felsic magma is the answer.
What type of rock is formed by weathering and erosion?
Sedimentary rocks are formed on or near the Earth’s surface, in contrast to metamorphic and igneous rocks, which are formed deep within the Earth. The most important geological processes that lead to the creation of sedimentary rocks are erosion, weathering, dissolution, precipitation, and lithification.
What kind of rock is formed when magma cools below the surface?
Igneous rocks form when magma (molten rock) cools and crystallizes, either at volcanoes on the surface of the Earth or while the melted rock is still inside the crust. All magma develops underground, in the lower crust or upper mantle, because of the intense heat there.
What is a non explosive volcano?
Nonexplosive eruptions are the most common type of volcanic eruptions. These eruptions produce relatively calm flows of lava in huge amounts. B. Vast areas of the Earth’s surface, including much of the sea floor and the Northwestern United States, are covered with lava form nonexplosive eruptions.
What are four types of volcanic eruptions?
There are four types of eruptions with properties determined mostly by the silica content of magma, and the amount of gas it contains. In order of increasing explosiveness, these are Hawai’ian, Strombolian, Vulcanian, and Plinian eruptions.
What type of magma produces explosive eruptions?
Explosive eruptions are favored by high gas content & high viscosity magmas (andesitic to rhyolitic magmas). The explosive bursting of bubbles fragments the magma into clots of liquid that cool as they fall through the air.
What type of volcano has quiet and explosive eruptions?
Shield volcanoes, those with broad, gentle slopes, produce the quietest eruptions. The Hawaiian Islands are not only home to active shield volcanoes, but the chain is actually built entirely by them. The two most common types of volcanoes known for producing explosive eruptions are cinder cones and stratovolcanoes.