Shield volcanoes

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Moreover, what type of volcano has gently sloping sides?

shield volcanoes

Likewise, what type of volcano has the steepest sides? Composite Volcano A composite volcano (cone-shaped volcano formed by alternating layers of solidified lava and rock particles) is a combination of a cinder cone and shield volcano that results from alternating eruptions of volcanic debris and lava. This type of volcano is likely to be the tallest and steepest volcano.

In this regard, which type of volcano is characterized by gently sloping sides that are primarily built up of many low viscosity lava flows?

Shield Volcanoes

What type of lava does a composite volcano have?

Composite Volcanoes ("Stratovolcanoes") Composite volcanoes are built by multiple eruptions, sometimes recurring over hundreds of thousands of years, sometimes over a few hundred. Andesite magma, the most common but not the only magma type, tends to form composite cones.

Related Question Answers

What are the types of a volcano?

There are three main types of volcano - composite or strato, shield and dome. Composite volcanoes, sometimes known as strato volcanoes, are steep sided cones formed from layers of ash and [lava] flows. The eruptions from these volcanoes may be a pyroclastic flow rather than a flow of lava.

How are volcanoes classified?

Volcanoes are classified as active, dormant, or extinct. Active volcanoes have a recent history of eruptions; they are likely to erupt again. Dormant volcanoes have not erupted for a very long time but may erupt at a future time. Inside an active volcano is a chamber in which molten rock, called magma, collects.

What are the 7 types of volcanoes?

Geologists generally group volcanoes into four main kinds—cinder cones, composite volcanoes, shield volcanoes, and lava domes.

• Cinder cones. Cinder cones are the simplest type of volcano.
• Composite volcanoes.
• Shield volcanoes.
• Lava domes.

What is magma that erupts quietly?

Lava can erupt either quietly or explosively.

Why do shield volcanoes have very gently sloping sides?

The main difference with shield volcanoes is that they're formed out of lava flows which have a low viscosity. The shape and nature of a volcano depends on the viscosity of the magma. With shield volcanoes, the lava flows easily for many kilometers, creating the gently sloping sides.

What are the 6 types of volcanoes?

Different types of volcanoes include stratovolcanoes, shield, fissure vents, spatter cones and calderas.

What is the difference between magma and lava?

What is the difference between magma and lava? Magma is composed of molten rock and is stored in the Earth's crust. Lava is magma that reaches the surface of our planet through a volcano vent.

How fast is a pyroclastic flow?

A pyroclastic flow (also known as a pyroclastic density current or a pyroclastic cloud) is a fast-moving current of hot gas and volcanic matter (collectively known as tephra) that moves away from a volcano about 100 km/h (62 mph) on average but is capable of reaching speeds up to 700 km/h (430 mph).

What are the three main types of magma?

There are three basic types of magma: basaltic, andesitic, and rhyolitic, each of which has a different mineral composition.

Which Magma has the highest viscosity?

The magma that has the highest viscosity is rhyolitic magma.

What is the smallest type of volcano?

Cinder cones

What is the most common type of volcano?

Cinder cone volcanoes

What are the four primary types of volcanoes?

Geologists generally group volcanoes into four main kinds--cinder cones, composite volcanoes, shield volcanoes, and lava domes.

What determines the steepness of a volcano?

The shape of a volcano is largely determined by the type of lava that has erupted, and importantly, its viscosity. Viscosity is a fluid's resistance to flow. Water, for example, is a low viscosity fluid. The cooler the lava, the higher the viscosity (the thicker it is).

Why do some volcanoes erupt violently?

The two main factors that influence how a volcano will erupt are viscosity and gas content. Both are related to the composition of the magma . Ultimately, enough bubbles grow and expand to blow the magma into ash size fragments and eject them violently into the atmosphere.

How does a lava plateau form?

A lava plateau is a wide, flat surface formed when a large amount of highly fluid lava flows over an area. This thin and runny lava can disperse over large areas, and as the lava cools and solidifies, it forms the large, flat plateaus of rock.

Is a supervolcano a type of volcano?

A supervolcano is a large volcano that has had an eruption with a Volcanic Explosivity Index (VEI) of 8, the largest recorded value on the index. This means the volume of deposits for that eruption is greater than 1,000 cubic kilometers (240 cubic miles).

What is the safest type of volcano?

But that's just one type of volcano – the stratovolcano (or composite volcano). Stratovolcanoes consist of many layers (strata) of hardened lava, tephra, pumice, and volcanic ash. They generally have steep slopes and are the most common type of volcanoes on Earth.

Which volcano is most dangerous?

In the wake of its recent fiery rampage, it's perhaps no surprise that Kīlauea in Hawaii tops the list as the most dangerous volcano in the U.S., according to newly released rankings from the U.S. Geological Survey. Washington's Mount St. Helens and Mount Rainier round out the top three slots.