Rocks

By-Rawan Layth

What is the Rock Cycle?

The rock cycle is the natural process in which rocks transform from one rock type into another rock type over time. Rocks are created and destroyed and even changed during the Rock Cycle.

DiD You Know

Did you know that the Rock cycle was developed by 18th-century Scottish farmer naturalist James Hutton.

Rock types

Igneous Rock ( Obsidian)

Igneous Rocks are formed when magma inside the Earth is trapped in small pockets. As these pockets of magma slowly begin to cool they become Igneous Rocks. Geologists classify igneous rocks by how are they formed. You will find Igneous rocks around Volcanoes that have already erupted or on the ocean floor due to underwater volcanoes. You can also find them in the crust or mantle. Most Igneous rocks are at a divergent plate boundary. hey can be classified by: their crystalline texture,The 4 minerals that make up an Igneous rock : Felsic, Intermediate, Mafic, and Ultramafic, How are they formed (When magma cools and hardens).

Metamorphic Rocks ( Marble)

Metamorphic Rocks are rocks that have "Morphed" into another kind of rock. Before These rocks were once a Sedimentary or Igneous rock. When these rocks are Sedimentary or Igneous they were under heat and pressure which caused them to change into a Metamorphic rock. Metamorphic rocks are classified by: A Metamorphic rock is to look for bands or of the rock sample. The banding in metamorphic rocks has a stripped appearance. The thicker the bands the more intense the heat and pressure conditions were to form the rock, how it's formed (when Sedimentary or Igneous rocks are under heat and pressure), the texture wich is foliated or non-foliated. Metamorphic rocks are found deep underground in many places around the world. the are often found under the base of a mountain.

Sedimentary Rocks (Limestone)

Sedimentary rocks are formed when sediments are compacted or put under pressure. Rock particles, clay, and organic matter has deposited itself and lithified from overburden pressure or chemical precipitation from a saturated solution. Classified by: texture Coarse grained, Medium grained, and fine grained, how it's formed (when Sediments are under pressure), It's made from sediments. Sedimentary rocks cover 75% of the world. You can find sedimentary rocks in almost every area of the world and almost any climate, From the bottom of the ocean to the desert. Anywhere such as your neighbor's backyard, a park, ocean floor, desert, and much more.