In other words if it formed from a rock that held basalt in it the rock has basalt in.
A metamorphic rock formed from granite is.
Actually it truly depends on the type of rock the metamorphic rock formed from.
The granitic rock in migmatite probably originated from partial melting of some of the metamorphic rock though in some migmatites the granite may have intruded the rock from deeper in the crust.
Some form during mountain building by forces of others from the heat of igneous intrusions in regional metamorphism others from the heat of igneous intrusions in contact metamorphism.
Granites can be predominantly white pink or gray in color depending on their mineralogy the word granite comes from the latin granum a grain in reference to the coarse grained structure of such a completely crystalline rock.
Granite ˈ ɡ r æ n ɪ t is a common type of felsic intrusive igneous rock that is granular and phaneritic in texture.
This will result in the formation of an igneous rock not a metamorphic rock.
Metamorphic rocks are formed from other rocks that are changed because of heat or pressure.
A photograph of polished gneiss from the stock of a countertop vendor.
These are the rocks that form by the effects of heat pressure and shear upon igneous and sedimentary rocks.
The original rock is subjected to heat temperatures greater than 150 to 200 c and pressure 100 megapascals 1 000 bar or more causing profound physical or chemical change the protolith may be a sedimentary igneous or existing metamorphic rock.
The end product of their metamorphism is a banded rock with a mineralogical composition like granite.
Granite is not metamorphic but an intrusive igneous rock formed from cooling magma.
Metamorphic rocks change when exposed to even more heat and pressure.
Necessary for metamorphism comes from magma of the earth or friction from moving tectonic plates.
Granite gneiss can also form through the metamorphism of sedimentary rocks.
Consider how granite changes form.
In migmatite you can see metamorphic rock that has reached the limits of metamorphism and begun transitioning into the igneous stage of the rock cycle by melting to form magma.
They are not made from molten rock rocks that do melt form igneous rocks instead.
In order to create metamorphic rock it is vital that the existing rock remain solid and not melt.
If there is too much heat or pressure the rock will melt and become magma.