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Is rhyolite high in silica?
Yes, rhyolite is high in silica. It is a volcanic rock with silica content of around 70% or more. This high silica content contributes to its high viscosity and explosive nature during volcanic eruptions.
What two properties of magma determine what kind of volcano will form?
The silica content and the gas content of magma are two properties that determine what kind of volcano will form. Magma with low silica content and low gas content tends to form effusive, shield volcanoes, while magma with high silica content and high gas content tends to form explosive, stratovolcanoes.
What is a volcano with high silica?
A volcano with high silica content is referred to as a stratovolcano or composite volcano. These volcanoes have highly viscous magma due to the high silica content, leading to explosive eruptions that can be violent and dangerous. Examples include Mt. St. Helens in the United States and Mt. Fuji in Japan.
What is the opposite of basaltic?
The opposite of basaltic is rhyolitic. Basaltic rocks are formed from lava that is low in silica content, while rhyolitic rocks are formed from lava that is high in silica content.
What mineral that affects magma thickness?
The mineral that affects magma thickness is silica. Magma with high silica content tends to be more viscous, resulting in thicker magma. Conversely, magma with low silica content is less viscous and flows more easily.
Is rhyolite high in silica?
Yes, rhyolite is high in silica. It is a volcanic rock with silica content of around 70% or more. This high silica content contributes to its high viscosity and explosive nature during volcanic eruptions.
What is the behavior of lava with silica content being high and low?
Lava with high silica content tends to be more viscous and flow more slowly, leading to explosive eruptions. In contrast, lava with low silica content is less viscous and flows more easily, resulting in gentler, effusive eruptions.
Does mount erebus have high silica or low silica?
Mount Erebus has high silica content in its magma, which makes it more viscous and prone to explosive eruptions. This high silica content contributes to the formation of ash clouds and lava bombs during eruptions.
Does kilauea have a high or low silica content?
Kilauea erupts low-silica lava.
Does pillow lava have high silica?
No. Pillow lava is basaltic, so it has a low silica content.
What type of lava does mt hood have high silica or low silica?
Mt. Hood has lava with high silica content, resulting in a more viscous and explosive eruption compared to lavas with lower silica content. High silica lava tends to form more explosive eruptions due to its increased resistance to flow.
Does mt.st.helens have a high or low silica content?
Because Mount Rainier is a Strato Volcano it has both quiet and explosive eruptions. Explosive(pyroclastic) flows have a high silica level. Quiet have low silica levels. The more silica the thicker the magma.
What is the silica content of magma?
Mt. Etna is a stratovolcano like Krakatoa and Mt. Vesuvius, therefore it has a high silica content. Though lava with a high silica content does not tend to travel very far away from the source; it can be a double edged sword as magma with a high silica content tends to trap gasses until it reaches a bursting point, ending in a massive eruption.
Does Mount Tambora have a lot or a little of silica?
Given that it tends to erupt in a very explosive manner, mount Tambora has a high silica content.
What is the name of a volcanic rock with high silica content?
Rhyolite.
What is the silica and water content of mt Cleveland?
Mount Cleveland, a stratovolcano in Alaska, typically has a high silica content in its volcanic rocks, which is common for volcanoes in the Aleutian arc. The specific silica content can vary depending on the eruption. The water content in Mount Cleveland's magma is also high, contributing to its explosive eruptions.
How does the quartz in the lava effect it and how it erupts?
If lava contains quartz that means the silica content is high. A high silica content makes lava more viscous, and gives it the tendency to erupt explosively.
