Heat from the mantle melts part of the lower crust.
The term felsic des derived from feldspar and silica, which are the primary components of felsic rock.
Yes. Felsic magma is very viscous.
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.
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.
Quartz monzonite ranges from intermediate to felsic.
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.
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.
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.
Rhyolite is not a mafic rock, but a felsic rock, high in silicates, and similar to granite in composition.
Pyroclastic flows can be of any composition, but are more commonly felsic or intermediate.
Rhyolite contains abundant silica and alkali feldspar, which are the the defining components of felsic rock.
Is mineral amphibolite a felsic, mafic or intermidiate in term of color