Metamorphic Rock

Metamorphic rocks are formed below ground through the process of metamorphism, where existing rocks are subjected to high temperatures and pressures causing their mineral structure to change. This process typically occurs deep within the Earth's crust.

This line is from the book "Anne of Green Gables" by Lucy Maud Montgomery. It describes a scene where the character Anne Shirley gets so frustrated with Gilbert Blythe that she hits him over the head with her slate.

The labor group that tried to organize miners in the anthracite regions in Pennsylvania was the Molly Maguires. They were arrested by Franklin Gowen, who was the president of the Philadelphia and Reading Railroad and had a strong anti-union stance. The arrests led to a series of trials and executions of many members of the Molly Maguires.

Metamorphic rocks are rocks formed from igneous, sedimentary and even other metamorphic rocks. Heat, pressure and chemical action can cause a rock to change into another rock. Pressure from the rocks on top of them squeezes and folds the rock. Their grains come close together and they become less porous. Heat and chemicals may cause changes in the arrangement of mineral particles or new minerals may be formed.

A metamorphic rock with stripes or bands likely formed in a region where tectonic forces caused intense pressure and temperature changes within existing rocks. This process, called metamorphism, results in the alignment of minerals in distinct layers, creating the banded appearance seen in rocks like gneiss or schist.

Slate is denser than shale because it has undergone more pressure and heat during the metamorphic process, causing it to become more compacted and less porous. This leads to a higher density in slate compared to the original sedimentary rock shale.

Metamorphic rocks change from their original form through heat and pressure deep within the Earth's crust. The heat and pressure cause the minerals within the rock to recrystallize and reorganize, resulting in a new texture and composition. This process can also involve the introduction of new minerals, leading to the formation of metamorphic rocks.

it turns into a igneous rock and then you cook an elephant cupcake @ 350

Lead is denser than water, so it sinks when placed in water. Marble is also denser than water, causing it to sink as well. The density of an object determines whether it will float or sink in a liquid.

Chalkboards were made of slate in the olden days because slate could be split into flat, thin pieces, and because you could use chalk on it. The chalk was easy to remove, as well. So slate was the perfect choice for chalk boards. But it could not be made into large sheets of slate.

For a long, long time, chalkboards have been made with black paint, real slate, and so on. Modern chalkboards are made of a mixture of porcelain enamel with silica granules. Larger silica particles are called, "Sand". But the small silica granules in the porcelain enamel give the finished chalkboard just enough roughness that the chalk will rub off on it. Porcelain enamel would not accept chalk lines by itself. (Try using chalk on a glass or china dinner plate)

The enamel-silica mixture is applied to usually 22-guage steel for durability, a pressboard backing is added, the coated steel/backing gets a frame around it, and there you have a finished chalkboard.

A metamorphic rock with definite layers is called a foliated rock. Examples include slate, schist, and gneiss, which form due to intense pressure and heat causing minerals to align in distinct layers. Foliated rocks often have a banded appearance due to this layered structure.

No, the rock cycle is a continuous process that involves the transformation of rocks from one type to another over time. After quartzite has formed, it can still undergo changes through processes like weathering, erosion, and metamorphism to become a different type of rock. These changes can happen over millions of years, keeping the rock cycle going.

One example of a man-made metamorphic rock is marble. Marble is formed when limestone, a sedimentary rock, is subjected to high heat and pressure causing it to recrystallize and form a new rock with a distinctive crystalline structure.

Zeolites are typically formed in sedimentary and metamorphic environments, rather than volcanic or igneous settings. They are secondary minerals that form from the alteration of volcanic glass and ash by groundwater.

Gneiss rocks typically form from the metamorphism of either sedimentary rocks like shale or igneous rocks like granite. Through intense heat and pressure deep within the Earth's crust, the original minerals in these rocks recrystallize and reorganize to create the distinctive banding and foliation that characterizes gneiss.

Igneous rocks are used to make crushed stone, gravel, and dimension stone for construction. Sedimentary rocks are used to make cement, limestone, and sandstone for building materials. Metamorphic rocks like marble and quartzite are popular for countertops and decorative purposes.

Nonfoliated metamorphic rocks do not have a layered or banded appearance like foliated rocks. Instead, they exhibit a uniform texture and lack the alignment of minerals seen in foliated rocks. Nonfoliated rocks are typically composed of minerals that have recrystallized without forming distinct layers.

Subduction and high pressure.

it shows fossils because when sedimentary rocks are formed waste and decayed matter get cement( crushed ) togather. The change of mineral forms metamorphic rocks, but the fossils will remain in the rocks only the minerals will change.

eg Limestone ----- marble.

Limestone forms marble which is used to build taj mahal.

Soapstone is a metamorphic rock that is typically non-foliated, meaning it lacks the layered structure seen in foliated rocks like slate or schist. Instead, soapstone has a uniform texture and appearance due to its high talc content.

Quicklime is formed from marble by heating the marble (composed of calcium carbonate) at high temperatures (around 900-1000°C) in a kiln or furnace. This process, called calcination, results in the decomposition of the calcium carbonate in the marble, leading to the formation of quicklime (calcium oxide) as a result.

Yes, mica schist does contain silica, as it is a metamorphic rock formed from the alteration of pre-existing rocks rich in silica like clay or sandstone. Silica is one of the main components of mica schist, alongside minerals such as mica, quartz, and feldspar.

Gneiss is predominantly made up of minerals such as quartz, feldspar, and mica. It typically consists of alternating layers of light and dark minerals that have undergone intense heat and pressure, resulting in a banded appearance.

Gneiss is a high grade metamorphic rock, the product of various rock types being exposed to intense pressures and heat under the surface of the Earth. Orthogneiss is a gneiss whose parent rock was igneous, and paragneiss is a gneiss whose parent rock was sedimentary.

slate on a roof is a compound. because slate all around is a compuond since it is only made up of two mixtures.