Metamorphic Rock

The extrusive volcanic rock pumice can float on water. Other extrusive volcanic rocks are not so lucky.

Granite is turned into the metamorphic rock gneiss by heat and pressure that is normally regional in nature, i.e., it will cover a broad expanse of geography due to the actions of tectonic plate movements, and in particular, plate collisions. The incredible pressures that are experienced in a granite that is being subjected to these forces will cause the minerals in the rock to align themselves perpendicularly to the direction of the force being applied, causing a narrow parallel banding in their appearance called foliation.

Yes and No!

Minerals that form crystals in rock are sometimes rare and unusual. These are "jewels" or "gemstones."

The heat and pressure that form metamorphic rocks are also responsible for altering the minerals inside the rock often producing gemstones. For example, Coal is made from Carbon, if enough heat and pressure is applied to the Coal it will become a Diamond. The Diamond is still made from Carbon, but it's properties have changed because of the extreme conditions.

slate

There are many minerals in metamorphic rocks eg. Phyllites contain micas , Amphibolite contains amphiboles, quartz, and plagioclase. Other minerals include feldspars, biotite, pyroxenes and others such as calcium carbonate as in marble ..a result of the metamorphism of limestone.

The ring on gneiss and schist surrounding the roughly circular Llano Uplift located in the eastern region of the Edwards Plateau, west of the Texas Hill Country in Central Texas is one exposure of metamorphic rocks. The Marathon Mountains northeast of Big Bend National Park are another area of exposed, folded metamorphosed rocks.

because metamorphic rock is formed through a combination of extremely high heat and pressure which would destroy any fossils in it and igneous rock is formed through extremely high heats which would also most likely destroy fossils.

gneiss, schist, slate

Geologists classify metamorphic rocks based on texture, mineral composition, and the degree of metamorphism. Texture refers to the size, shape, and arrangement of minerals in the rock. Mineral composition refers to the specific minerals present in the rock, which can indicate the temperature and pressure conditions under which the rock formed. The degree of metamorphism refers to how much the rock has been changed from its original state.

- Amphibolite

- Eclogite

- Gneiss

- Greenstone

- Hornfels

- Marble

- Migmatite

- Phyllite

- Quartzite (Metaquartzite)

- Schist

- Slate

- Soapstone

Anthracite is a type of coal that is the highest grade with a high carbon content and the least impurities. It is known for its lustrous appearance and clean-burning properties, making it a valuable fuel source for heating and energy production.

By exposure to heat and/or pressure through depth of burial, directed pressure, or proximity to a magma source. Existing minerals can recrystallize, non-hydrous minerals can replace hydrous minerals, new minerals can be formed from the introduction of new ions from heated solutions, and minerals can become flattened and aligned in parallel layers.

Metamorphic rocks such as marble, slate, and quartzite are commonly used in construction for countertops, flooring, and decorative purposes. They can also be used in sculptures, monuments, and gravestones due to their durability and distinct appearance. Additionally, certain metamorphic rocks like schist and gneiss can be used as landscaping stones.

Gneiss is a metamorphic rock of variable composition with distinct banded layers. The layers or banding are called foliations, the result of the alignment of mineral grains in a direction perpendicular to the direction of pressure being exerted on the rock.

Four types of metamorphic rock are marble, slate, quartzite, and schist. Each of these rocks forms through the alteration of existing rock types under high pressure and temperature conditions deep within the Earth's crust.

Deep underground, at the base of mountains, in zones radiating from intrusions of magma underground, on glaciated terrain after transportation by ice, or on the surface of eroded mountains.

No, mudstone is a type of sedimentary rock formed from the compression and cementation of fine-grained mud and silt particles. Metamorphic rocks are formed from the alteration of pre-existing rocks due to high pressure, temperature, or chemical processes.

Greenstone can be found in regions with geological formations that have undergone metamorphism, such as New Zealand, Canada, and parts of the United States. It is often associated with regions that have a history of volcanic activity and tectonic processes that have produced the necessary conditions for its formation.

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Diamond is not a metamorphic rock. It is a mineral composed of carbon that forms under high pressure and temperature in the Earth's mantle. Diamonds are then brought to the surface through volcanic activity.

by going under heat and pressure

From increased pressure and/or heat. Fluid removal results in hydrous mineral destruction and non-hydrous mineral creation, resulting in rock of a different mineralogy.

A metamorphic rock can be further metamorphosed by additional heat and/or pressure into a rock with a higher degree of metamorphism. An example of this would be the metamorphic rock slate changing into the metamorphic rock phyllite.

Marble is the type of metamorphic rock that is formed from limestone. Limestone undergoes metamorphism under high pressures and temperatures, which causes the calcite crystals in the rock to recrystallize and form marble.

Slate.

Slate is a low grade metamorphic rock derived from shale or mudstone.

Sedimentary rocks occur when sediments, weathered fragments from older rocks as well as biological debris like leaves, trees, and dead animals, are deposited and stay in place long enough for rock to form. Some sedimentary rocks include sandstones, shales, limestone and coal seams. Sedimentary deposits are very important in economic geology for they include coal seams and oil deposits.

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