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The word felsic is used to describe igneous rocks that are rich in silica and alkali feldspar. Such rocks tend to be light in color and have a lower density than other igneous rocks.
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What does the word felsic mean?
Felsic refers to rock rich in silica and aluminum content. It describes igneous rocks that are light in color and have high concentrations of minerals like quartz and feldspar. Felsic rocks are commonly found in continental crust.
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 felsic magma viscous?
Yes. Felsic magma is very viscous.
Why are felsic rocks melted by mafic magmas but mafic rocks are not melted by felsic magmas?
Felsic rocks have a lower melting point than mafic rocks and felsic magma has a lower temperature. In other words, felsic magma is not hot enough to melt mafic rock while mafic magma is hot enough to melt felsic rock.
Is quartz felsic?
Yes, quartz is felsic. Felsic minerals are rich in silica (SiO2) and aluminum (Al2O3), which are primary components of quartz. Quartz is commonly found in felsic igneous rocks such as granite and rhyolite.
Is quartz monzonite mafic or felsic?
Quartz monzonite ranges from intermediate to felsic.
Is felsic magma eruptive?
Not usually. Because it is so viscous, felsic magma does not erupt as easily as mafic magma. While eruptions of felsic magma do occur, most felsic rocks are intrusive, meaning they solidify underground.
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 is a is a felsic rocks?
A felsic intrusive rock is a a type of compressed granite. a good example would be the McTavish monument on mount royal in Montreal. Despite this felsic intrusive rock is not from Montreal.
Does rhyolite have a more mafic composition than basalt?
Rhyolite is not a mafic rock, but a felsic rock, high in silicates, and similar to granite in composition.
Is amphibolite mineral a felsic mafic or intermidate?
Is mineral amphibolite a felsic, mafic or intermidiate in term of color
Are pyroclastic flows felsic or mafic?
Pyroclastic flows can be of any composition, but are more commonly felsic or intermediate.
