Igneous rocks comprise about 95 of the total earth s crust.
Is granite igneous metamorphic or sedimentary.
Granite type rocks granitoids are abo.
Partial melt granitic type rocks are granitic gneiss which is a metamorphic rock.
The sedimentary rock becomes metamorphic with heat and pressure.
There are many types of igneous rocks.
Even the granites that form via metamorphism of sediments are igneous because they pass through a melting stage.
All other types of rocks viz sedimentary and metamorphic originate from igneous rocks and therefore they are also called primary rocks.
Igneous rocks are formed when molten substances below the earth surface cools down and solidifies.
It erodes into sediment and then gets compressed into a sedimentary rock.
Most of the solid surface of our planet ro ughly 70 is represented by sedimentary rocks but if you go deep enough beneath the earth s surface there are plenty of igneous and metamorphic r.
Each kind of igneous rocks contains different minerals and has different structures.
Hence the study of metamorphic rocks provides an understanding of the pressure and temperatures deep within the earth s crust.
The existing rock type which undergoes a change is referred to as the protolith.
We have 3 main types or classes of rock based on how they are formed.
The granite melts into lava then cools becoming igneous.
Then due to various conditions within the earth the existing rock was changed into a.
Igneous rock sedimentary rock and metamorphic rock.
These molten substances are called magma or lava magma can be derived from melting of existing rocks on the earth crust.