| A | B |
|---|
| atoll | a ring-shaped coral island found far from land |
| cementation | process by which dissolved minerals crystallize and glue particles of sediment together into one mass. |
| chemical rock | sedimentary rock that forms when minerals crystallize from a solution |
| clastic rock | sedimentary rock that forms when rock fragments are SQUEEZED together under high pressure. |
| compaction | process by which sediments are pressed together under their OWN weight. |
| coral reef | a structure of calcite shells built up by coral animals (shells) living in warm, shallow ocean water. |
| deposition | process by which sediment settles out of the water or wind that is carrying it and is deposited in a new location. |
| erosion | process by which water, ice, wind, or gravity MOVES fragments of rock or soil. |
| extrusive rock | igneous rock that forms from LAVA on Earth's surface |
| foliated | term used to describe metamorphic rocks whose grains are arranged in parallel LAYERS or bands. |
| grain | a particle of mineral or other rock that gives a rock its texture. |
| igneous rock | a type of rock that forms from the COOLING of MOLTEN rock at or below the surface. |
| intrusive rock | igneous rock that forms when MAGMA HARDENS beneath Earth's surface. |
| metamorphic rock | a type of rock that forms from an EXISTING rock that is changed by heat, pressure or chemical reaction. |
| organic rock | sedimentary rock that forms where REMAINS of ORGANISMS are deposited in thick layers |
| porphyritic texture | igneous rock texture in which large crystals are scattered on a background of much smaller crystal |
| rock cycle | processes on the surface & inside Earth that slowly change rocks from one kind to another. |
| sediment | small, solid pieces of material from rocks or organisms which are moved by water or wind, resulting in erosion and deposition. |
| sedimentary rock | type of rock that forms when particles from other rocks or the remains of plants and animals are pressed and cemented together. |
| texture | size, shape and pattern of a rock's grains. |
