ROCKS

TYPES OF ROCKS

• Sedimentary
• Igneous
• Metamorphic

SEDIMENTARY ROCK FORMATION

• Layers of rock bits settle at the bottom of the ocean
• Over time, they clump together and turn into rocks

TYPES OF SEDIMENTARY ROCKS

• Sandstone (Soft stone, made when grains of sand stick together)
• Shale (Clay that has hardened and turned into rock)
• Limestone (Made of calcium carbonate and microscopic shells)

IGNEOUS ROCK FORMATION

• Form when magma from the earth's core cools
• The type of igneous rock formed depends on the mix of materials in the rock

TYPES OF IGNEOUS ROCKS

• Granite (quartz, feldspar, mica)
• Diorite (feldspar is dominant, +more minerals)
• Gabbro ( minerals are dominant, +feldspar)

METAMORPHIC ROCK FORMATION

• Originally igneous or sedimentary
• A lot of pressure or heat cause them to change to metamorphic rock

TYPES OF METAMORPHIC ROCKS

• Slate (originally shale-splits into smooth tabs)
• Schist (most common type, contains mica)
• Gneiss (Several different types of rock, streaky, often forms from granite)

WORK CITED

• Sedimentary Rocks
• Igneous Rocks
• Metamorphic Rocks