A 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 is often felsic, having high-to-intermediate levels of silica (as in rhyolite, dacite, or andesite), with lesser amounts of less-viscous mafic magma. Extensive felsic lava flows are uncommon, but have travelled as far as 15 km (9.3 mi). Stratovolcanoes are sometimes called "composite volcanoes" because of their composite layered structure built up from sequential outpourings of eruptive materials. They are among the most common types of volcanoes, in contrast to the less common shield volcanoes. Two famous stratovolcanoes are Krakatoa, best known for its catastrophic eruption in 1883 and Vesuvius, famous for its destruction of the towns Pompeii and Herculaneum in 79 CE. Both eruptions claimed thousands of lives. In modern times, Mount Saint Helens and Mount Pinatubo have erupted catastrophically. Existence of stratovolcanoes has not been proved on other terrestrial bodies of the solar system with one exception.
Volcano.. - Tea fields in front of the volcano.
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Added month ago by Grażyna


mountain in the clouds - mountain peak in the clouds
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mountain in the clouds

Added 2 months ago by sandra


landscape - colorful puzzle puzzle
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Added 4 months ago by natalia


Olimp in the clouds - Olimp in the clouds, Greece
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Olimp in the clouds

Added year ago by Zeta


Mount Fuji, Japan - colorful puzzle jigsaw
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Mount Fuji, Japan

Added year ago by natalia


full moon - mountains in the moonlight
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full moon

Added year ago by ewunia x


wybuch wulkanu - skała,wulkan,ogień,otwór,
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wybuch wulkanu

Added over a year ago by wieslawa


wybuch wulkanu - lawa,wulkan,góry,fala,woda
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wybuch wulkanu

Added over a year ago by wieslawa


wulkan Etna - wybuch wulkanu Etna naSycyli
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wulkan Etna

Added over a year ago by Basieńka


piękne miejsca na ziemi - piękne miejsca na ziemi
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piękne miejsca na ziemi

Added over a year ago by Nikola


Ośnieżone szczyty - Ośnieżone szczyty w tle
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Ośnieżone szczyty

Added over a year ago by Anita


Vulkan Tolbachik - Vulkan Tolbachik auf die russische Halbinsel Kamtaschatka
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Vulkan Tolbachik

Added over a year ago by Balduin


Indonezja w cieniu wulkanów - krajobraz jak z bajki
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Indonezja w cieniu wulkanów

Added over a year ago by Gosia