Characteristics and Examples of the Three Different Rock Types

Metamorphic Characteristics Formed under the surface They have ribbon like layers May have shiny crystals showing, which is crystals that were formed SLOWLY overtime

Igneous Characteristics When lava cools QUICKLY, there are no crystals showing. The rock appears to look shiny and glasslike(OBSIDIAN) Tiny gas bubbles can sometimes get trapped in the rock (during the cooling process) This will leave small holes and spaces in the rock.

Sedimentary Characteristics Formed from particles of sand, pebbles, rock, shells and other material. Together, all of these particles are called SEDIMENT This type of rock is generally soft and can easily break apart or crumble easily Sediment accumulates in LAYERS

Metamorphic Rock Examples Gneiss Schist Marble Quartzite Slate

Igneous Rock Examples Granite Obsidian Rhyolite Basalt Gabbro

Sedimentary Rock Examples Shale Sandstone Limestone Breccia Siltstone Conglomerate