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Why do gentle eruptions of lava produce gentle sided volcanoes?
Wiki User
∙ 12y ago
Generally, when a volcano produces a gentle eruption the lava has a very low viscosity (it is very runny). This allows the lava to spread out quickly after it has exited the volcano but before it cools and hardens. This means that the lava will be able to spread further from the eruption site and thus gentle slopes are created.
In a strong eruption, lava with a higher-viscosity is thrown out along with some rock fragments, this lava cannot flow as far away before it cools and so the volcano has steep slopes.
Hope that helps!
Wiki User
∙ 12y ago
Wiki User
∙ 12y agoIt will only have this structure if the lava is hot and fluid. This typically only happens at hotspot volcanos, like Hawaii and Yellowstone.
If the lava is instead cooler and full of dissolved gas or water the volcano will have steep slopes and a narrow base. This typically happens at subduction zone volcanos, like the Pacific ring of fire. These volcanos are often explosive when they erupt.
Wiki User
∙ 15y agoShield volcanoes erupt runny lava, which doesn't easily build up (gentle slopes).
Wiki User
∙ 11y ago-basalt is so fluid
-rift eruptions (side eruptions)
- lava tubes
Wiki User
∙ 12y agoBecause the shield volcanos have basaltic lava that flows gently down the sides building up slopes, and the composite volcanos just throw rock and lava up in the air not making slopes.
Wiki User
∙ 8y agoShield volcanoes form from flows of fluid lava which clearly cannot form steep slopes. The sheer volume of lava, however, will slowly form a pile of rock that is both very tall and very wide.
Wiki User
∙ 12y agoshield volcano
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What are gentle sided and steep sided volcanoes?
gently sloping volcanoes are called shield volcanoes and they are formed from many eruptions of lava that is relatively low in silica, so it spreads out in many thin layers and creates the gently sloping sides of a shield volcano.
Why are composite volcanoes steeply sloped?
It depends on viscosity of the lava. the runnier the lava, the farther it flows before solidifying, so it cannot pile up as fast.
What are the different types of volcanoe?
Volcanoes are grouped into four types: cinder cones, composite volcanoes, shield volcanoes and lava volcanoes. They are: Cinder Cones: They are circular or oval cones made up of small fragments of lava from a single vent. They have been blown into the air, cooled, and fallen around the vent. Composite: They are steel-sides and composed of many layers of volcanic rocks. Mt. Rainier and Mount St. Helens are examples of this type of volcano. Shield: Shaped like a bowl or shield in the middle, they have long gentle slopes made of basaltic lava flows. The volcanoes that formed the basalt of the Columbia Plateau were shield volcanoes. Lava Volcanoes: Deep sided mound formed by lava that is too thick to flow. The lava piles up near the vent.
Large volcanoes with steep slopes that commonly collapse or explode at the top giving them a bowl for a crater.?
Composite cones are steep sided, cone shaped volcanoes that produce explosive eruptions.Composite volcanoes have broad bases and steep sides. These volcanoes usually have a large crater at the top. The crater was created during the volcano's last eruption.Composite volcanoes are also called stratovolcanoes. This is because they are formed by alternating layers (strata) of magma and ash. The magma that creates composite volcanoes tends to be thick. The steep sides form because the lava cannot flow too far from the vent. The thick magma may also create explosive eruptions. Ash and pyroclasts erupt into the air. Much of this material falls back down near the vent. This creates the steep sides of stratovolcanoes.Composite volcanoes are common along convergent plate boundaries. When a tectonic plate subducts, it melts. This creates the thick magma needed for these eruptions. The Pacific Ring of Fire is dotted by composite volcanoes.Word-for-word from source: https://sites.google.com/site/earthscienceinmaine/types-of-volcanoes
What kind of volcanoes form along subduction zones?
Usually composite volcanoes. subduction zone volcanos usually form steep sided composite cones composed primarily of andesite
What are gentle sided and steep sided volcanoes?
gently sloping volcanoes are called shield volcanoes and they are formed from many eruptions of lava that is relatively low in silica, so it spreads out in many thin layers and creates the gently sloping sides of a shield volcano.
Why are composite volcanoes steeply sloped?
It depends on viscosity of the lava. the runnier the lava, the farther it flows before solidifying, so it cannot pile up as fast.
How Hawaii is formed?
Hawaiian volcanoes primarily erupt a type of rock known as basalt. When molten, basalt produces liquids of relatively high fluidity, compared to volcanoes that erupt more silica rich magma types such as andesite, dacite or rhyolite. The fluidity of molten basalt favors the formation of lava flows, which is why the Hawaiian volcanoes generally have gentle sloping sides. By contrast, lavas with higher silica content are more viscous and commonly produce either thicker, shorter lava flows, thick blocky deposits and/or thick beds of ash that fall from the sky following explosive eruptions. These other types of volcanoes (common outside of Hawaii) are typically steeper sided. The Hawaiian volcanoes were produced by the Hawaiian hot spot, which is presently under the Big Island of Hawaii.
What are steep-sided volcanoes made from?
ash and lava
What are the different types of volcanoe?
Volcanoes are grouped into four types: cinder cones, composite volcanoes, shield volcanoes and lava volcanoes. They are: Cinder Cones: They are circular or oval cones made up of small fragments of lava from a single vent. They have been blown into the air, cooled, and fallen around the vent. Composite: They are steel-sides and composed of many layers of volcanic rocks. Mt. Rainier and Mount St. Helens are examples of this type of volcano. Shield: Shaped like a bowl or shield in the middle, they have long gentle slopes made of basaltic lava flows. The volcanoes that formed the basalt of the Columbia Plateau were shield volcanoes. Lava Volcanoes: Deep sided mound formed by lava that is too thick to flow. The lava piles up near the vent.
How are Mount Vesuvius and Mount Krakatoa similar?
Both Krakatoa and Mount Vesuvius are stratovolcanoes, also known as composite volcanoes. They are tall and steep-sided, composed of alternating layers of lava flows and ash. Both have a history of producing very large explosive eruptions with massive ash clouds including historically famous eruptions that killed thousands.
Large volcanoes with steep slopes that commonly collapse or explode at the top giving them a bowl for a crater.?
Composite cones are steep sided, cone shaped volcanoes that produce explosive eruptions.Composite volcanoes have broad bases and steep sides. These volcanoes usually have a large crater at the top. The crater was created during the volcano's last eruption.Composite volcanoes are also called stratovolcanoes. This is because they are formed by alternating layers (strata) of magma and ash. The magma that creates composite volcanoes tends to be thick. The steep sides form because the lava cannot flow too far from the vent. The thick magma may also create explosive eruptions. Ash and pyroclasts erupt into the air. Much of this material falls back down near the vent. This creates the steep sides of stratovolcanoes.Composite volcanoes are common along convergent plate boundaries. When a tectonic plate subducts, it melts. This creates the thick magma needed for these eruptions. The Pacific Ring of Fire is dotted by composite volcanoes.Word-for-word from source: https://sites.google.com/site/earthscienceinmaine/types-of-volcanoes
What kind of volcanoes form along subduction zones?
Usually composite volcanoes. subduction zone volcanos usually form steep sided composite cones composed primarily of andesite
Are all volcanoes the same or are there different kinds of volcanoes?
There are indeed different types of volcano, and even among these, no two volcanoes are exactly alike. For most intents and purposes there are three main types of volcano. Shield volcanoes are large, with broad, gentle slopes made of cooled lava flows. These volcanoes usually fountain or ooze lava, rarely erupting in an explosive manner. The volcanoes of Hawaii and shield volcanoes. Cinder cones are repetitively small and steep-sided, made primarily of cooled chunks of lava called scoria that were ejected into the air. Such volcanoes usually erupt in a somewhat explosive manner. Notable cincer cones include Sunset Crater and Paricutin. Stratovolcanoes, also called composite, are generally quite tall with steep slopes composed of layers of lava flows, cinders, and ash. Stratovolcanoes are highly variable in how they erupt. Sometimes they gently ooze lava, but they are best know for their large, explosive eruptions of ash and pumice. Notable stratovolcanoes include Mount St. Helens and Mount Vesuvius.
What type of valcano is Mount Saint Helens?
Mt. Saint Helens is a composite volcano. Composite volcanoes are formed by some alternating layers of tephra (rock debris thrown into the air by volcanic eruptions) and lava. Composite volcanoes usually erupt violently and are large and steep-sided.
What does 3M produce?
sticky tape, both single- and double-sided
How do you recognize a cinder cone volcano?
Cinder cone volcanoes are recognized by their small, steep-sided cones with a symmetrical shape. They are typically formed by explosive eruptions that eject cinders, ash, and lava fragments into the air, which then accumulate and form a cone-shaped mountain. Cinder cones are usually short-lived and can be found in volcanic fields or as isolated volcanic features.
