Question

What are metamorphic rocks?

Answer 1

Hint: A rock is a solid made up of different minerals and is generally not uniform. Scientists categorize rocks by how they were made or formed and the three main types of rocks: Metamorphic, Igneous, and Sedimentary.

Complete Answer:
-The rock cycle is a fundamental theory in geology that interprets evolutions through geologic time among the three main rock types: sedimentary, metamorphic, and igneous. Each rock type is modified when it is deprived out of its equilibrium conditions.

-The rock cycle is a procedure in which rocks are continuously modified between the three rock types igneous, sedimentary and metamorphic. If the sediments are put in under different layers of sediment, they can become lithified to generate a sedimentary rock. Magma is developed when rocks are melted.

-Metamorphic rocks are those that are subjected to high heat, high pressure, hot fluids. Conditions like these are found deep within the Earth where tectonic plates meet.

-The process of metamorphism transforms the rocks into denser rocks. New minerals are developed either by rearrangement of mineral ingredients or by outcomes with fluids that enter the rocks.

- Pressure and temperature can alter formerly metamorphosed rocks into new types. Metamorphic rocks are often squished, smeared out, and creased.

-There three ways by which metamorphic rocks can form are; Contact, Regional and Dynamic metamorphism.

-There are two types of metamorphic rocks, namely ; Foliated and Nonfoliated metamorphic rocks.

Foliated metamorphic rocks are those that are formed by the parallel arrangement of mineral grains and have a striped appearance. Example: granite and gneiss.

Non-foliated metamorphic rocks are those that are sheet-like structures formed by contact metamorphism. Example: limestone.

Note:
-Common metamorphic rocks consist of phyllite, schist, gneiss, quartzite and marble.
-Metamorphic rocks are used to make buildings, jewelry, powders, and have great economic value.
-Marble and Slate are the two most important metamorphic rocks.