ROCKS

IGNEOUS

• formed through the cooling and solidification of magma or lava.
• Over 700 types of igneous rocks have been classified

BASALT

• The basalt rock is very fine grained.
• It is black like the Obsidian rock but is not shiny

OBSIDIAN

• the obsidian rock is "glassy" and looks very smooth.
• It has a shiny look to it and is all black

GRANITE

• the granite rock is made up of many different crystal like objects
• It is a mix of white, grey, and black

METAMORPHIC

• They arise from the transformation of existing rock types
• Metamorphic rocks are created by an alteration by heat and pressure

GNEISS

• Gneiss is the parent rock of granite
• Gneiss has multiple colors
• It is fine grained

SCHIST

• Schist is the parent rock of slate
• Schist is a variation of colors
• It is coarse grained

SLATE

• Slate is the parent rock of shale
• Slate is sleek and black

QUARTZITE

• Quartzite is the parent rock of sandstone
• It is reddish and fine grained

MARBLE

• Marble is the parent rock of limestone
• It is white and has many crystals

SEDIMENTARY

• formed by the deposition of material at the Earth's surface and within bodies of water.
• sedimentary rocks are estimated to be only 8% of the total volume of the crust

ROCKSALT

• Is made from evaporated salt water
• Consists of mainly salt

LIMESTONE

• formed from tiny pieces of shells of dead sea animals
• It is fine grained

CONGLOMERATE

• composed of large, rounded particles.
• It is coarse grained

SHALE

• composed of flat layers of silt and clay, usually holding organic materials.
• It is fine grained

SANDSTONE

• composed of sand-sized grains of mineral, rock or organic material.
• It is fine grained