© EmmaAlexJackTinc2011 Geology Study of rocks, minerals, parts of earth Sedimentary MetamorphicIgneous Minerals

The Igneous rock is made when the magma is underground erupts, and the lava cools above ground. Igneous rocks are split into two groups. When the Igneous rock cools quickly, the rock is as smooth as glass. When it cools slowly, air bubbles will get trapped into the rock, and then the Igneous rock will have spaces in it. Granite is a example of Igneous Rock, and people can use it for counters for their kitchen Obsidian is used for sharp edges such as knives, and arrowheads. Amphibolite is also a type of Igneous rock. It is used as crushed stone for the use of road and railroad bed construction.

Rocks metamorphose when they are in a place where it is very hot or the pressure is high. It is squeezed under the earth for millions of years. The rocks will often have layers and crystals. A metamorphic rock is formed by the rock being crushed between the Earths crust, and heat and high pressure. A marble metamorphic rock is used for making floor tiles A quartzite metamorphic rock is used for making building tools. A Phylite metamorphic rock is used for making marble buildings

A Sedimentary rock is made up of about three-quarters of the rocks on the Earth. They are from environments such as beaches, rivers, the ocean, and anywhere that sand, mud, and other types of sediment collect. Many sedimentary rocks are made from the broken bits of other rocks, which are called Clastic Sedimentary Rocks. The other types of Sedimentary rocks, are called Chemical Sedimentary Rocks, and is made up of mineral crystals. Shale is a Sedimentary Rock and is used as a filler for paint Breccia is used for countertops and walk ways. Sandstone is also a Sedimentary rock and is used for sharpening devices, buildings, and glass production.

The inner core of the earth is the hottest. Its about 1,216 km in the radius. The inner core is a solid as it is packed together so tightly. Inner Core The outer core of the earth is the second hottest. It’s a liquid layer of about 2,266 km. Its also composed of iron and nickel. Outer Core The mantle is divided into two regions. It is made from hot, semisolid rock. Its about 2,900 km. thick. Hard and rigid, the crust is the earth’s thinnest layer, and its about 5 km. thick and under the ocean. Mantle Crust

A mineral is a non-living solid that is made of atoms and elements. The atoms divides the minerals into many different groups. A mineral is formed by atoms and elements. A mineral could be formed by magma, cools and leaves crystals. When minerals are formed by the sea, it is a sedimentary-mineral rock. Also, when the mineral is a metamorphic it forms where mountains start forming. The Minerals are Quartz, Talc, Gold, Copper, Silver, Diamond, Mesa, Feldspars and many more. The Asychanite is rock is a rock that is sold for millions of dollars Many people buy this rock because it is very pretty to look at it is called a Ajoyt Crystals are often put on jewelry and sold for thousands dollars

The Rock Cycle of Igneous, Metamorphic, and Sedimentary rocks