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6-3 Flash cards
Term | Definition |
---|---|
rock cycle | a concept used to explain how the three basic rock types are related and how Earth processes, over geologic time, change a rock from one type into another. |
hydrothermal metamorphism | Changes that occur in rocks near the surface where there is intense activity of hot water |
contact metamorphism | metamorphism due to contact with or proximity to an igneous intrusion. |
regional metamorphism | metamorphism affecting rocks over an extensive area as a result of the large-scale action of heat and pressure. |
non-foliated rocks | do not have a layered or banded appearance. |
foliated rocks | a special type of metamorphic rock that has distinct, repetitive layers. |
solid state alterations | preexisting rocks (undergo slow solid-state changes in texture, mineralogy) |
metamorphism | alteration of the composition or structure of a rock by heat, pressure, or other natural agency. |