How do metamorphic rocks get classified?
As with igneous and sedimentary rocks, metamorphic rocks are classified on the basis of texture (grain size, shape, orientation) and mineral composition.
What are the 5 types of metamorphism?
Observe on the phase diagram above the five kinds of metamorphism: Hydrothermal, Contact, Barrovian (sometimes called ” regional” ), Blueschist, and Eclogite.
What are the four major conditions that result in metamorphic rocks?
Metamorphic rocks form when rocks are subjected to high heat, high pressure, hot mineral-rich fluids or, more commonly, some combination of these factors.
What is physical classification of rocks?
Rocks are classified into three types based on their geological formation and they are : Sedimentary rocks. Igneous rocks. Metamorphic rocks.
What rocks would be classified as metamorphic rocks?
Classification of metamorphic rocks
- Schist. Rocks in which metamorphic minerals are easily seen by eye or hand lens and in which the mineral grains have a highly orientated fabric are called schists.
- Mylonites and cataclastites.
How are metamorphic rocks classified identify the characteristics of each of these classifications?
Metamorphic rocks are classified as either foliated or non-foliated. Foliated rocks have layers of mineral grains. Non-foliated rocks have little or no layering. One rock can become many different types of metamorphic rock depending on the heat, temperature, and fluid conditions during metamorphosis.
How would you describe foliation in metamorphic rocks?
Foliation in geology refers to repetitive layering in metamorphic rocks. Each layer can be as thin as a sheet of paper, or over a meter in thickness. Rocks exhibiting foliation include the standard sequence formed by the prograde metamorphism of mudrocks; slate, phyllite, schist and gneiss.
Does this metamorphic rock have foliation?
Schist is a metamorphic rock with well-developed foliation. It often contains significant amounts of mica which allow the rock to split into thin pieces. It is a rock of intermediate metamorphic grade between phyllite and gneiss.