Type of Volcano: Shield Volcanoes

In this blog you will learn further about the "Shield Volcanoes".

What is Shield Volcanoes?

https://i.pinimg.com/736x/90/02/40/9002402cac9eeb239c895d37fa6009d3--volcano-clipart-shield-volcano.jpg

Shield volcanoes, so named for their broad, shield-like profiles, are formed by the eruption of low-viscosity lava that can flow a great distance from a vent. They generally do not explode catastrophically. Since low-viscosity magma is typically low in silica, shield volcanoes are more common in oceanic than continental settings. The Hawaiian volcanic chain is a series of shield cones, and they are common in Iceland, as well.
A shield volcano is a type of volcano usually built almost entirely of fluid lava flows. They are named for their low profile, resembling a warrior's shield lying on the ground. This is caused by the highly fluid (low viscosity) lava they erupt which travels farther than lava erupted from stratovolcanoes.

HAZARDS OF SHIELD VOLCANOES

Pyroclastic flows (avalanches of hot ash, rock, and gas)
Lava flows (molten rock)
Lahars (mudflows)
Tephra (solid material blown into the atmosphere, large rock fragments and “volcanic bombs”)
Hazardous gases, such as sulfur dioxide.

DO SHIELD VOLCANOES HAVE EXPLOSIVE ERUPTION?

Eruptions at shield volcanoes are only explosive if water somehow gets into the vent , otherwise they are characterized by low-explosivity fountaining that forms cinder cones and spatter cones at the vent, however, 90% of the volcano is lava rather than pyroclastic material.

HOW IS SHIELD VOLCANOES FORMED?

Water is very runny, and has a low viscosity. Syrup, on the other hand, has a high viscosity and flows more slowly. 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.

EXAMPLES OF SHIELD VOLCANOES

1. Mount Bulusan, or Bulusan Volcano, is the southernmost volcano on Luzon Island in the Republic of the Philippines.

2. Kīlauea is a currently active shield volcano in the Hawaiian Islands, and the most active of the five volcanoes that together form the island of Hawaii.

3. Mauna Loa is one of five volcanoes that form the Island of Hawaii in the U.S. state of Hawaii in the Pacific Ocean.

That's all for the Shield Volcanoes..

Be ready for the next topic! :)

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References:

http://www.worldlibrary.org/articles/potentially_active_volcano

volcano.oregonstate.edu/shield-volcanoes

https://www.universetoday.com/65586/how-are-shield-volcanoes-formed/

http://3.bp.blogspot.com/-o2S3Kxi4ITc/U3FwNoDKBXI/AAAAAAAAEVg/PJOIELfFtD8/s1600/01.jpg

https://www.thinglink.com/scene/703592514581430273

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