modern fence panel composite volcano

BBC Earth - Composite volcanoes erupt deadly, superhot gas and ashcomposite volcanoes (also called stratovolcanoes) are much more explosive than shield volcanoes, the other important type of volcano. The large and generally cone-shaped volcanoes form along plate boundaries called subduction zones where one of the Earth's plates moves below another. The sinking plate melts as it falls back into the Earth's mantle. Trapped seawater and ocean sediment is added to this molten mix, which in turn melts the overlying continental crust.

Characteristics of Composite Volcanoes | Sciencing9 Jan 2018 ... composite volcanoes are the most common type of volcano on the Earth's surface. They account for 60 percent of the Earth's volcanism. Most of the remaining 40 percent occurs under the oceans. ...

BBC - GCSE Bitesize: Different types of volcanoDifferent types of volcano. volcanoes can be described in terms of activity and can be: still active and erupt frequently; dormant (temporarily inactive but not fully extinct); extinct (never likely to erupt again). volcanoes can also be described by their shape or type - shield or composite. Shield volcanoes. The characteristics of a shield volcano. Shield volcanoes are usually found at constructive or tensional boundaries. They are low, with gently sloping sides. They are formed by eruptions ...

Introduction - Guide to Stratovolcanoes24 Feb 2016 ... Introduction. What is a volcano? A volcano is simply a hole or vent in Earth's crust through which molten rock, steam and other gases come forth. Scientists group volcanoes into four main kinds--cinder cones, strato- or composite volcanoes, shield volcanoes, and lava domes. volcanoes take their name from the island of Vulcano in the Mediterranean Sea. Long ago people thought this island mountain was the chimney of the blacksmith forge of the Roman God Vulcan.

Stratovolcano - WikipediaA stratovolcano, also known as a composite volcano, is a conical volcano built up by many layers (strata) of hardened lava, tephra, pumice, and volcanic ash. Unlike shield volcanoes, stratovolcanoes are characterized by a steep profile and periodic explosive eruptions and effusive eruptions, although some have collapsed craters called calderas. The lava flowing from stratovolcanoes typically cools and hardens before spreading far due to high viscosity. The magma forming this lava ...

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