Paragneiss is gneiss derived from sedimentary rock such as sandstone.
Igneous rocks like granite can become gneiss.
Gneiss ˈ n aɪ s is a common and widely distributed type of metamorphic rock gneiss is formed by high temperature and high pressure metamorphic processes acting on formations composed of igneous or sedimentary rocks orthogneiss is gneiss derived from igneous rock such as granite.
Gneiss can turn into an igneous rock if it is melted.
Not all gneiss is obtained from granite and there are also diorite.
Granite gneiss can also form through the metamorphism of sedimentary rocks.
Heat and pressure cause granite to become gneiss and change sandstone into quartzite.
The mineral constituents that create these rocks get recycled over time.
More fleshed out fuller and still correct answer.
Gneiss is a metamorphic rock granite is an igneous rock and sandstone is a sedimentary rock.
It forms from the slow crystallization of magma below earth s surface.
A photograph of polished gneiss from the stock of a countertop vendor.
Granite is composed mainly of quartz and feldspar with minor amounts of mica amphiboles and other minerals this mineral composition usually gives granite a red pink gray or white color with dark mineral.
Granite is an igneous rock whereas gneiss is formed after metamorphosis of an existing igneous rock.
If the chemistry and conditions are right granite forming minerals can precipitate.
All rocks undergo a series of processes called the rock cycle where one type of rock changes into another.
The end product of their metamorphism is a banded rock with a mineralogical composition like granite.
Metamorphic rocks form from heat and pressure which changes the original or parent rock into a completely new rock.
The mineral composition of both granite and gneiss is same but alteration of granite because of very high pressure and temperature leads to the formation of gneiss.
If this occurs it will now be classified as a granite.
