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What type of magma does Mt Etna have?
The composition of Mt. Etna is basaltic.
Which igneous rock forms when basaltic magma hardens?
Intrusive rock
What does magma with high silica content form?
When it cools and crystallizes into rock, the rock will be described as felsic igneous rock. Examples of felsic igneous rocks are granite, rhyolite, and pumice.
What is the difference between a crater and a caldera?
A caldera is a large depression formed at the summit of a volcano, left behind by the excavation of magma. A crater is formed by an explosion or impact.
Does the increase in silica increase the viscosity of a magma?
it is normally intermediate flow because of the silica content.
What is a low-silica magma?
A magma containing not much silica (= SiO2). For example: a basaltic magma. These magma's have a low viscosity since the lower the SiO2-content, the lower the viscosity; and hence flow easily (↔ a felsic magma).
What are the 3 types of magma?
basaltic magma ,Andesitic magma and Rhyolitic magma
Is basaltic magma or granitic magma hotter?
Baslatic magma is hotter.
Is basaltic or andesitic magma hotter?
Basaltic magma is hotter than andesitic magma. Basaltic magma typically has temperatures ranging from 1000°C to 1200°C, while andesitic magma has temperatures around 800°C to 1000°C.
When equal amounts of a basaltic and granitic magma mix what is the resulting magma?
basaltic
What list places the magma What list places the magma types in order of decreasing?
basaltic,andesitic,rhyolitic
What color rocks does basaltic magma form?
Basaltic magma usually forms a black rock.
What is Magma that is high in silica and produces explosive eruption is called?
Rhyolitic magma. Boom! Basaltic magma is its exact opposite, while andesitic magma is in between the two.
Does basaltic magma have a lot of silica or very little?
Basaltic magma is low in silica compared to andesitic or granitic magma.
Which would you expect to cause the greatest amount of contact metamorphism an intrusion of basaltic magma or an intrusion of rhyolitic magma?
An intrusion of basaltic magma would likely cause greater contact metamorphism compared to an intrusion of rhyolitic magma. Basaltic magma has higher temperatures and higher fluidity, allowing it to heat surrounding rocks more effectively and induce more intense metamorphic changes.
Does basaltic magma have little gas?
Yes, basaltic magma typically has low gas content compared to other types of magma. This is because basaltic magma is formed at high temperatures and pressures which allows gases to escape more easily. The low gas content contributes to the relatively quiet and effusive eruptions common with basaltic magma.
What are the characteristics of magma associated with shield volcanoes?
Basaltic, runny magma.
