Extrusive Igneous Rock - produced when magma exits and cools above (or very near) the Earth's surface. Causes the rock texture to be fine-grained, Intrusive Igneous Rock - Igneous rocks form below Earth's surface when magma intrudes into existing rock layers and cools. Causes the rock texture to be rough or course., sedimentary rock - formed from pre-existing rocks or pieces of once-living organisms, metamorphic rock - started out as some other type of rocks, but have been substantially changed from their original form, magma - extremely hot liquid and semi-liquid rock located under Earth's surface, weathering - breaks down rocks, erosion - carries rock pieces away, deposition - drops the pieces of rock, cementation - crystals hold the sediment grains together, metamorphism - change of composition or structure of a rock by heat, pressure, or other natural agency, stratification - the layering that occurs in most sedimentary rocks and in those igneous rocks formed at the Earth's surface, as from lava flows and volcanic fragmental deposits,

Rocks and Minerals Definitions

Leaderboard

Visual style

Options

Switch template

Continue editing: ?