ARE YOU A DETECTIVE… ROCK ON!!!

By: Justin Brown

THE ROCK CYCLE

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HOW IT WORKS

The rock cycle is a cycle that never stops and has no starting point. Igneous rock is the parent of all rocks(because it is formed inside the earth) so let’s start with igneous rock. First it starts as magma in the earths core then it comes to the surface through a volcanic eruption or a fissure in the earth.

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HOW IT WORKS

Then igneous rock is weathered by the elements, Erosion comes in and it brings it to a water source. The burial and compactation come in and from the enormous amount of pressure it becomes sedimentary rock. Then with heat and pressure the sedimentary rock becomes metamorphic rock then it melts and becomes magma. The magma crystallizes and the cycle starts again.

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SEDIMENTARY ROCK

Sedimentary rock is a mineral that is created by sedimentation in bodies of water and on the earths surface. Particles that make up sedimentary rock are called sediments

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USES FOR SEDIMENTARY

ROCKSedimentary rock can be used for many different things here are some examples like gypsum, Gypsum can be used in chalk, drywall, and plaster or coal coal can be use

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GRAINS

Grains: sedimentary rocks are put into three sections according to grain. Sedimentary rocks can vary from fine grained to medium grained and also coarse grain.

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LOCATIONSedimentary rocks can be found in seventy-five percent of the earth and can also carry fossils. Sedimentary rock can be found under lake Thoma-Lex and near Kure beach

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Igneous rock is a rock that is created by the cooling and solidification of magma. The picture to the left is diorite and it is a coarse grained rock

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IGNEOUS ROCK

USES FOR IGNEOUS ROCKIgneous rock can be used in many different thing lets take granite, granite can be used in countertops, monuments (including mount Rushmore) . Or pumice simce it is fairly light it is used in decorative landscaping

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GRAINSIgneous rock can be categorized into two sections by their grain. Igneous rock can vary from fine grained to coarse grained.

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LOCATIONIgneous rocks can be found near volcanic eruptions, in the earth’s core and in cracks in the earth called fissures. They can also be found in the smoky mountains and in Granville county

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METAMORPHIC ROCK

Metamorphic rock is a rock that is created by heat and pressure applied to a rock, or a change in composition.

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GRAINMetamorphic rock tend to be coarse grained but they can be fine grained too

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LOCATIONMetamorphic rocks can be found at the bases of mountains, deep In the earth as well as glaciated areas that have been transported them by ice. Can be found in the Appalachian mountains and in deep river basin

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MY ROCKMy rock is coal and it is burned to create energy and it is also a fossil fuel. It’s formed from decaying plant matter in the bottom of water sources.

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WHAT TYPE OF ROCK IS IT

Coal is a sedimentary rock and is usually black or brownish-black.

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COMPOSITIONCoal is composed mainly of carbon as well as sulfur ,oxygen nitrogen ,and hydrogen.

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LOCATIONCoal is located underground and in mines all over the world. Coal is found in thirty-eight states nearly 1/8 of the states are on coal beds.

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IS IT FOUND IN NC

Yes. Coal is found in NC 95% comes from Chatham county the other 5% is found in small quarries in Randolph and lee county

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We get coal from above and under ground mines