SOLAR SYSTEM

Detailed explanation-1: -Metamorphic rocks started out as some other type of rock, but have been substantially changed from their original igneous, sedimentary, or earlier metamorphic form. Metamorphic rocks form when rocks are subjected to high heat, high pressure, hot mineral-rich fluids or, more commonly, some combination of these factors.

Detailed explanation-2: -Schist is foliated, meaning it contains bands or layers, while quartzite is non-foliated, meaning it does not contain bands. This occurs because the pressure and heat is applied differently to each. Schist’s parent rock is shale, while the parent rock of quartzite is sandstone.

Detailed explanation-3: -Gneiss is a high grade metamorphic rock. This means that gneiss has been subjected to more heat and pressure than schist. Gneiss is coarser than schist and has distinct banding. This banding has alternating layers that are composed of different minerals.

Detailed explanation-4: -If there is too much heat or pressure, the rock will melt and become magma. This will result in the formation of an igneous rock, not a metamorphic rock. Consider how granite changes form. Granite is an igneous rock that forms when magma cools relatively slowly underground.

Detailed explanation-5: -Gneiss is made up of coarse-grained minerals such as quartz and feldspar. Granitic gneiss has a mineral composition similar to that of granite. Schist is a metamorphic rock usually formed originally from shale.