Magma can solidify and cool to form igneous rocks such as granite, basalt, or andesite, depending on the composition and cooling rate of the magma.
If an eruption is quiet, it typically indicates that the magma has low viscosity due to high silica content. The high silica content causes the magma to be more fluid, allowing gases to escape easily and resulting in a gentle eruption with less explosive activity.
Silica-rich thick magma is typically classified as either dacitic or rhyolitic magma. These magmas have higher silica content, making them more viscous and able to trap gas bubbles. They often erupt explosively due to the high pressure build-up caused by the thick magma.
The more silica crystal within the magma, the more viscous the magma is, because of crystals sticking together. So magma with low silica content is runny, and wiht just flow gently out of a volcano, like in hawai, but viscous (sticky, like honey) magma will not, and gas gets trapped within it, and then explodes out, cause large scale explosive erruptions.
Mafic magma is more likely to form volcanic rock. Mafic magma is rich in magnesium and iron, and tends to have lower viscosity and higher temperatures, allowing it to flow more easily to the surface and form volcanic rocks such as basalt.
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.
silica-rich magma
intrusive igneous rock
Magma can solidify and cool to form igneous rocks such as granite, basalt, or andesite, depending on the composition and cooling rate of the magma.
lava also known as magma which is the more scientific form of the word
thin magma
Igneous rocks form from magma as it cools and solidifies. Examples include granite, basalt, and obsidian.
The three kinds of rocks by their method of formation are IGNEOUS rocks, SEDIMENTARY rocks and METAMORPHIC rocks. Igneous rocks cool from magma or lava. Sedimentary rocks form by the deposition of particulates and silt. Metamorphic rocks form from rocks (usually sedimentary) that are compressed and heated underground.
Igneous rock
It produces a quiet eruption.
The magma that can produce a violent eruptions is those rich in silica,fluid,iron, and forming shield volcano.
If an eruption is quiet, it typically indicates that the magma has low viscosity due to high silica content. The high silica content causes the magma to be more fluid, allowing gases to escape easily and resulting in a gentle eruption with less explosive activity.