Andesite
Yes. Tuff is an extrusive igneous rock formed by explosive volcanic eruptions.
Silica content affects the viscosity of igneous rocks because higher silica content leads to higher viscosity, making the magma more resistant to flow. Rocks with higher silica content tend to form more explosive volcanic eruptions due to the build-up of gas pressure. Lower silica content leads to lower viscosity, allowing the magma to flow more easily and potentially forming more gentle eruptions.
Correct. Igneous rocks fly out of volcanic eruptions
Rocks that come from the mantle are called mantle rocks. These rocks are typically formed deep within the Earth's mantle and can include peridotite, dunite, and eclogite. Mantle rocks are brought to the surface through processes like volcanic eruptions or tectonic movements.
Dense. Light colored igneous rocks have lower density compared to dark colored igneous rocks due to their higher silica content, which results in slower cooling and the formation of larger crystals.
majority
Yes. Tuff is an extrusive igneous rock formed by explosive volcanic eruptions.
Silica content affects the viscosity of igneous rocks because higher silica content leads to higher viscosity, making the magma more resistant to flow. Rocks with higher silica content tend to form more explosive volcanic eruptions due to the build-up of gas pressure. Lower silica content leads to lower viscosity, allowing the magma to flow more easily and potentially forming more gentle eruptions.
No, they produce very explosive eruptions. They do not erupt much magma, instead exuding chunks of ash and semi-hardened igneous rock.
Correct. Igneous rocks fly out of volcanic eruptions
Rocks that come from the mantle are called mantle rocks. These rocks are typically formed deep within the Earth's mantle and can include peridotite, dunite, and eclogite. Mantle rocks are brought to the surface through processes like volcanic eruptions or tectonic movements.
Normally, light colored igneous rocks are less dense compared to dark colored igneous rocks. This is because the light colored rocks have a less iron in them.
Most dark-colored igneous rocks are mafic, which means they are rich in minerals like pyroxene, olivine, and amphibole. These minerals give the rocks their dark color due to higher iron and magnesium content. Additionally, dark-colored igneous rocks are typically extrusive, forming from rapid cooling at the Earth's surface.
Dense. Light colored igneous rocks have lower density compared to dark colored igneous rocks due to their higher silica content, which results in slower cooling and the formation of larger crystals.
Igneous rock that flowed out of the surface if lava; lava blown out of explosive eruptions is Volcanic Ash, or Tuff.
Light-coloured igneous rocks, such as granite, have a higher silica content and lower iron and magnesium than darker ones, such as basalt. Since iron and magnesium are very dense minerals, this makes darker igneous rocks more dense than lighter ones.
Light colored igneous rocks have a higher silica content and are known as felsic rocks. They have a lower density and are more common in continental crust. These rocks tend to be rich in minerals like quartz, potassium feldspar, and muscovite.