Rocks

Rocks that form when molten materials solidify

Molten rock that is inside the Earth

Rock that formed deep within the Earth

Below Earth's crust

Molten rock on the Earth's surface

Rock that formed above the Earth's surface

Above the Earth's crust

Refers to an actual measurement of the individual crystals or aggerate

Larger

Smaller

The appearance or character of a rock

Texture that consists of gas pockets that give the appearance of having holes

Texture that contains large crystals in a fine grained matrix

Light colored rocks that have a high aluminum [Al] content and silicon [Si]

Dark colored rocks that have a high iron [Fe] content or magnesium [Mg]

Lower

Higher

Rock type that forms from an accumulation of sediment derived preexisting rocks and/or organic material

Solid fragmented material that is transported and deposited in layers on the Earth's surface

Rock that formed from the fragments or pieces of other rocks and can be identified by size

Rock that formed mineral grains that fall out of solution by evaporation

Rock formed from plant remains and/or living things

The manner in which sedimentary rocks' pieces are held together

Class such as clays, sands and silts are glued together

A reduction in volume of sedimentary layers due to increasing weight of overlaying sediment

A rock formed when dissolved minerals in water form crystalline mass of ingrown mineral crystals after evaporating

1. Form at or near the Earth's surface
2. Forms in horizontal layers
3. May contain fossils

Parent rocks that have been altered or deformed by increases in temperature and/or pressure

Preexisting rock from which metamorphic rocks are formed

When minerals rearrange and change form, but do not form layers

Type of foliation where pressure separates minerals into alternating light and dark layers

When minerals rearrange and change form, but do not form layers

Process in which metamorphic rocks are formed over large areas due to temperature and pressure increase

Process in which preexisting rock change when heat from magma or lava rearranges the minerals (no pressure, just heat!)