Types of Rocks

Front

igneous rock formed from lava that erupted onto Earth's surface

Back

extrusive

Front

Igneous rock that formed when magma hardened beneath the surface of Earth

Back

intrusive

Front

constantly broken apart by freezing and thawing, plant roots, acid, and other forces on rock

Back

weathering

Front

The process by which running water, wind, or ice carry away bits of broken-up rock

Back

erosion

Front

The process by which sediment settles out of the water or wind carrying it

Back

deposition

Front

The process that presses sediments together

Back

Compaction

Front

The process in which dissolved minerals crystallize and glue particles of sediment together

Back

cementation

Front

a sedimentary rock formed when rock fragments are squeezed together

Back

clastic

Front

a sedimentary rock formed where the remains of plants and animals are deposited in layers

Back

organic

Front

a sedimentary rock formed when minerals dissolved in a water solution crystallize

Back

chemical