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Is Felsic a Intrusive or Extrusive Rock?
Felsic rocks can be either intrusive or extrusive. Intrusive felsic rocks form underground when magma cools and solidifies slowly, creating large crystals. Extrusive felsic rocks form at the Earth's surface when volcanic lava cools quickly, resulting in fine-grained rocks like rhyolite.
What volcano does obsidian come from?
Obsidian is a felsic glass. At depth, it will crystallize to form granite. On the other hand it turns into perlite on reacting with water. At high grade it recrystallizes to form felsic glass.
What is the density of felsic rocks?
Felsic refers to igneous rocks that are rich in elements that form feldspar and quartz. Their densities vary, depending on the rock, but they generally have low density.
What does high silica content magma 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.
How do felsic lavas cool to form igneous rocks?
Felsic lavas cool to form igneous rocks when they solidify and harden after being erupted from a volcano. The cooling process can happen either on the surface of the Earth or underground, and the slow cooling allows minerals to crystallize and form the igneous rock.
What plate boundary does felsic rock come from?
Felsic rocks, such as granite, primarily originate from convergent plate boundaries where continental crust collides and undergoes partial melting to form silica-rich magmas. These magmas then cool and solidify to create felsic rocks.
Are felsic rocks usually intrusive or extrusive?
Felsic rocks are usually intrusive, meaning they form below the Earth's surface from magma that cools and solidifies slowly. This slow cooling allows minerals such as quartz and feldspar to crystallize and form coarse-grained textures commonly seen in intrusive rocks like granite.
What does felsic magma make after its solid?
It will form granite if it cools underground and rhyolite if it cools at the surface.
What is a felsic intrusive rock?
A felsic intrusive rock is a type of igneous rock that is rich in silica and aluminum minerals. These rocks form from the slow cooling of magma below the Earth's surface, allowing large mineral crystals to develop. Granite is a common example of a felsic intrusive rock.
Is felsic an intrusive or extrusive igneous rock?
It can be either. "Felsic" is not a specific type of rock but a general description of an ingeous rock's composition indicating high levels of silica and alkali feldspars.
Where did felsic lava get its name?
The term felsic des derived from feldspar and silica, which are the primary components of felsic rock.
Is silica thick?
Silica in natural form can be both particles or thick on fusion as in felsic magma origin
