| A | B |
|---|
| basaltic | dark-colored igneous rock rich in magnesium |
| cementation | process in which sediment grains are held together by natural cements |
| compaction | layers of sediments are compressed by weight of layers above them |
| extrusive | igneous rock formed when magma cools quickly at or near Earth' surface |
| foliated | metamorphic rock whose mineral grains line up in parallel layers |
| granitic | light-colored igneous rock |
| igneous rock | formed when magma or lava cools and hardens |
| intrusive | igneous rock that forms when magma cools slowly beneath Earth's surface |
| sedimentary rock | most likely contains fossils and is formed when layers are cemented or compacted together |
| sediments | loose materials that have been moved by wind, water, ice, or gravity |
| rock cycle | model that describes how rocks slowly change from one form to another |
| rock | mixture of one or more inerals; can be igneous, metamorphic, or sedimentary |
| nonfoliated | metamorphic rock whose grains rearrange but do not form layers |
| metamorphic rock | forms when heat, pressure, or fluids act on igneous, sedimentary or metamorphic rock to change it form or composition |
| lava | molten rock that flows from volcanoes |
