Metamorphic Rocks

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Metamorphic rocks are formed when existing rocks are subjected to heat and pressure. The original rock is changed into a new rock with different minerals and a different texture. Metamorphic rocks can be classified into two main types: foliated and non-foliated. Foliated metamorphic rocks have a layered or banded appearance, while non-foliated metamorphic rocks do not.

Foliated metamorphic rocks are formed when the original rock is subjected to heat and pressure in a single direction. This causes the minerals in the rock to align in a single direction, creating a layered or banded appearance. Foliated metamorphic rocks include schist, phyllite, and slate.

Non-foliated metamorphic rocks are formed when the original rock is subjected to heat and pressure in all directions. This causes the minerals in the rock to be randomly distributed, creating a non-layered or non-banded appearance. Non-foliated metamorphic rocks include marble, quartzite, gneiss, amphibolite, and eclogite.
Metamorphic rocks are formed when existing rocks are subjected to heat and pressure. The original rock is changed into a new rock with different minerals and a different texture. Metamorphic rocks can be classified into two main types: foliated and non-foliated. Foliated metamorphic rocks have a layered or banded appearance, while non-foliated metamorphic rocks do not.

Foliated metamorphic rocks are formed when the original rock is subjected to heat and pressure in a single direction. This causes the minerals in the rock to align in a single direction, creating a layered or banded appearance. Foliated metamorphic rocks include schist, phyllite, and slate.

Non-foliated metamorphic rocks are formed when the original rock is subjected to heat and pressure in all directions. This causes the minerals in the rock to be randomly distributed, creating a non-layered or non-banded appearance. Non-foliated metamorphic rocks include marble, quartzite, gneiss, amphibolite, and eclogite.

Schist is a foliated metamorphic rock that is formed when shale is subjected to heat and pressure. Schist is characterized by its layered or banded appearance, which is caused by the alignment of the minerals in the rock. Schist is typically composed of mica, quartz, and feldspar.

Phyllite is a foliated metamorphic rock that is formed when shale is subjected to moderate heat and pressure. Phyllite is similar to schist in that it has a layered or banded appearance. However, phyllite is typically finer-grained than schist and has a more lustrous appearance. Phyllite is typically composed of mica, quartz, and feldspar.

Slate is a foliated metamorphic rock that is formed when shale is subjected to low heat and pressure. Slate is characterized by its smooth, fine-grained texture and its ability to be split into thin sheets. Slate is typically composed of mica, quartz, and feldspar.

Marble is a non-foliated metamorphic rock that is formed when limestone is subjected to heat and pressure. Marble is characterized by its white, gray, or pink color and its crystalline appearance. Marble is typically composed of calcite.

Quartzite is a non-foliated metamorphic rock that is formed when sandstone is subjected to heat and pressure. Quartzite is characterized by its hardness and its resistance to weathering. Quartzite is typically composed of quartz.

Gneiss is a non-foliated metamorphic rock that is formed when granite is subjected to heat and pressure. Gneiss is characterized by its banded appearance, which is caused by the segregation of different minerals. Gneiss is typically composed of quartz, feldspar, and mica.

Amphibolite is a non-foliated metamorphic rock that is formed when basalt is subjected to heat and pressure. Amphibolite is characterized by its dark green or black color and its coarse-grained texture. Amphibolite is typically composed of amphibole, plagioclase feldspar, and quartz.

Eclogite is a non-foliated metamorphic rock that is formed when basalt is subjected to very high heat and pressure. Eclogite is characterized by its red or green color and its high density. Eclogite is typically composed of garnet, omphacite, and clinopyroxene.

Metamorphic rocks are an important part of the Earth’s crust. They are formed when existing rocks are subjected to heat and pressure, and they can be found in a variety of colors, textures, and compositions. Metamorphic rocks are used in a variety of applications, including construction, landscaping, and jewelry.
Metamorphic rocks are formed when existing rocks are subjected to heat and pressure. The original rock is changed into a new rock with different minerals and a different texture. Metamorphic rocks can be classified into two main types: foliated and non-foliated. Foliated metamorphic rocks have a layered or banded appearance, while non-foliated metamorphic rocks do not.

Foliated metamorphic rocks are formed when the original rock is subjected to heat and pressure in a single direction. This causes the minerals in the rock to align in a single direction, creating a layered or banded appearance. Foliated metamorphic rocks include schist, phyllite, and slate.

Non-foliated metamorphic rocks are formed when the original rock is subjected to heat and pressure in all directions. This causes the minerals in the rock to be randomly distributed, creating a non-layered or non-banded appearance. Non-foliated metamorphic rocks include marble, quartzite, gneiss, amphibolite, and eclogite.

Schist is a foliated metamorphic rock that is formed when shale is subjected to heat and pressure. Schist is characterized by its layered or banded appearance, which is caused by the alignment of the minerals in the rock. Schist is typically composed of mica, quartz, and feldspar.

Phyllite is a foliated metamorphic rock that is formed when shale is subjected to moderate heat and pressure. Phyllite is similar to schist, but it has a finer grain size and a less pronounced layered or banded appearance. Phyllite is typically composed of mica, quartz, and feldspar.

Slate is a foliated metamorphic rock that is formed when shale is subjected to low heat and pressure. Slate is characterized by its smooth, shiny surface and its ability to be split into thin sheets. Slate is typically composed of mica, quartz, and feldspar.

Marble is a non-foliated metamorphic rock that is formed when limestone is subjected to heat and pressure. Marble is characterized by its white or light-colored color and its crystalline appearance. Marble is typically composed of calcite.

Quartzite is a non-foliated metamorphic rock that is formed when sandstone is subjected to heat and pressure. Quartzite is characterized by its hardness and its resistance to weathering. Quartzite is typically composed of quartz.

Gneiss is a non-foliated metamorphic rock that is formed when granite is subjected to heat and pressure. Gneiss is characterized by its banded appearance, which is caused by the alternating layers of light-colored minerals and dark-colored minerals. Gneiss is typically composed of quartz, feldspar, and mica.

Amphibolite is a non-foliated metamorphic rock that is formed when basalt is subjected to heat and pressure. Amphibolite is characterized by its dark green or black color and its coarse grain size. Amphibolite is typically composed of amphibole, plagioclase feldspar, and quartz.

Eclogite is a non-foliated metamorphic rock that is formed when basalt is subjected to very high heat and pressure. Eclogite is characterized by its red or green color and its high density. Eclogite is typically composed of garnet, omphacite, and clinopyroxene.
1. Which of the following is a foliated metamorphic rock?
(A) Marble
(B) Quartzite
(CC) Gneiss
(D) Amphibolite
(E) Eclogite

1. Which of the following is a non-foliated metamorphic rock?
   (A) Marble
   (B) Quartzite
   (C) Gneiss
   (D) Amphibolite
   (E) Eclogite

2. Which of the following metamorphic rocks is formed from shale?
   (A) Schist
   (B) Phyllite
   (C) Slate
   (D) Marble
   (E) Quartzite

3. Which of the following metamorphic rocks is formed from sandstone?
   (A) Schist
   (B) Phyllite
   (C) Slate
   (D) Marble
   (E) Quartzite

4. Which of the following metamorphic rocks is formed from limestone?
   (A) Schist
   (B) Phyllite
   (C) Slate
   (D) Marble
   (E) Quartzite

5. Which of the following metamorphic rocks is formed from basalt?
   (A) Schist
   (B) Phyllite
   (C) Slate
   (D) Marble
   (E) Quartzite

6. Which of the following metamorphic rocks is the most common?
   (A) Schist
   (B) Phyllite
   (C) Slate
   (D) Marble
   (E) Quartzite

7. Which of the following metamorphic rocks is the hardest?
   (A) Schist
   (B) Phyllite
   (C) Slate
   (D) Marble
   (E) Quartzite

8. Which of the following metamorphic rocks is the most brittle?
   (A) Schist
   (B) Phyllite
   (C) Slate
   (D) Marble
   (E) Quartzite

9. Which of the following metamorphic rocks is the most common in the United States?
   (A) Schist
   (B) Phyllite
   (C) Slate
   (D) Marble
   (E) Quartzite