Volcanos
Volcanoes Volcanoes I. Introduction. II. Volcano’s formation. III. Volcanic materials. A. Lava B. Tephra C. gases IV. Eruptions A. Explosive Eruptions B. quiet Eruptions V. types of volcanoes A. shield volcanoes B. cinder volcanoes C. composite volcanoes I. Introduction. A Volcano is an opening in the earth’s crust through which lava, ash, and gases are ejected. Most volcanoes have steep sides, but some can also be gently sloping mountains or even flat tablelands, …
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…only a few hundred meters because of the Composition of materials that make the volcano.
C. Composite volcanoes
Composite volcanoes are made up of layers lava that previously erupted. Composite cones are mostly formed by andesite lava. Composite volcanoes make up more than 75% of all volcanos. Composite volcanoes erupt for hundreds and thousands of years. Composite volcanoes erupt explosibly and are often found chains with other volcanoes; one of this is the ring of fire.
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