Types of Rocks
By: Alarika Voora
The Rock Cycle (Brief)
The rock cycle is the the diffrent ways a rock can spend its life. For example... start from magma. Magma is cooled and becomes an igneous rock. After that heat and pressure is added andit become a Metemorfic Rock. Then after weathering and erosion it becomes sedements. Soon It compacts or cementation it is a Sedementary Rock. So on and so forth.... This is just one of the many ways a rock can travel. In the diagram below you can see the diffrent ways a rock move.
Marble is a metamorphic rock. It is usually black or white. Marble is a non-foliated rock that is produced from the metamorphism of limestone. It is composed primarily of calcium and carbonate. It is a metamorphic since it is made from heat and pressure. Marble is found in Greece, France, Italy, Spain, and some parts of Canada and the USA.
Limestone is a sedementary rock that is made of calcium and carbonate. Limestone is found is mostly found in the ocean about 30 degrees. Limestone forms when not alot of heat and pressure is added. Limestome can sometimes be a solid color or multiple colors at once.
Diorite is a Igneous Rock. It has a salt and pepper apperance. It is made of Andisite. It has a really grainy texture. Diorite is found in Sondrio, Italy, Thuringia and Saxony in Germany, Finland, Romania. Diorite is a rock that is formed when magme hardens and cools.