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Metamorphic rocks are formed from existing rocks that undergo changes due to heat, pressure, and chemically active fluids. They often exhibit foliation, which is the alignment of mineral grains, or may appear non-foliated, depending on their formation conditions. Common properties include increased density and hardness, as well as the presence of new minerals that form under metamorphic conditions. Examples include schist, gneiss, and marble.

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What are some physical properties of metamorphic rocks?

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Which properties are most often used to distinguish metamorphic rocks from other kinds of rocks?

Metamorphic rocks are formed when igneous or sedimentary rocks undergo change because of exposure to excessive heat and pressure. The properties most often used to distinguish them from other kinds of rocks are: density, banding and the absence of vesicles.


Are metamorphic rocks only formed by igneous rocks?

No. Metamorphic rocks can also from front sedimentary rocks and from other metamorphic rocks.


Changed-over rocks are called?

Metamorphic Rocks


Is metamorphic rocks made up of sedimentary rock igneous rock or other metamorphic rocks?

Metamorphic rocks


Are unakite rocks Metamorphic rocks or igneous rocks?

It is a type of Metamorphic rock


What process changes metamorphic rocks into sedimentary rocks?

Subduction and high pressure.


What are three types of rocks?

igneous, sedimentary, metamorphic


Can metamorphic rocks form form igneous but not from sedimentary rocks?

Metamorphic rocks can form from both igneous and sedimentary rocks through the process of heat and pressure, but they are more commonly associated with forming from existing metamorphic or sedimentary rocks. Igneous rocks can indirectly contribute to the formation of metamorphic rocks by heating up and altering surrounding rocks, leading to the formation of new metamorphic rocks.


Metamorphic rocks can only be formed from?

Metamorphic rocks can be formed from any pre-existing rock type (igneous, sedimentary, or other metamorphic rocks) that undergoes intense heat, pressure, or chemical changes without melting. This process causes the minerals in the rock to recrystallize and reorganize, resulting in a new metamorphic rock with different properties.


Can Metamorphic rocks can form from igneous but not from sedimentary rocks.?

Metamorphic rocks can form from both igneous and sedimentary rocks


Can metamorphic rocks can form from igneous but not from sedimentary rocks?

Metamorphic rocks can form from both igneous and sedimentary rocks