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Evey's Geology Stack

TermDefinition
rock cycle rock forms, changes form one type of rock to another, and forms again by processes in and on earth
sedimentary rock formed by weathering and erosion of rocks into smaller pieces or sediment, deposition, compaction, and cementation
sedimentary rock any rock type exposed at the earth's surface can become part of this rock type
sedimentary rock rock type in which fossils are found
sediment rock and mineral fragments
weathering breakdown of rock by water, heating and cooling, or other natural causes to form sediment
erosion movement of sediment by wind and water
deposition accumulation of sediment, can result in formation of layers
compaction squeezing together of rock layers
cementation formation of rock as sediment particles become bound together
sedimentary rock examples breccia, shale, sandstone
igneous rock rock formed directly from the cooling of magma (molten rock)
extrusive igneous rock rock produced when magma cools outside of, or very near, the earth's surface, such as at erupting volcanoes
extrusive igneous rock examples obsidian and pumice
intrusive igneous rock rock formed when magma trapped deep inside the earth cools very slowly (for more than a thousand years) until it solidifies
intrusive igneous rock example granite
metamorphic rock rocks that have changed from igneous rock or sedimentary rock into a new kind
metamorphic rock rock formed due to the effects of heat and pressure on already existing rock
metamorphic rock examples slate and marble
rock a naturally occurring solid mixture of one or more minerals and / or organic matter
Created by: gstubblefield
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