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Chapter 6

TermDefinition
Sediment Are small pieces of rock that are moved and deposited by water, wind, glaciers, and gravity.
Lithification The Physical and Chemical processes that transforms sediments into sedimentary rocks.
Cementation Occurs when mineral growth glues sediment grains together into solid rock.
Bedding Primary feature of sedimentary rocks is horizontal layering.
Graded bedding Is often observed in marine sedimentary rocks that were deposited by underwater landslides.
Cross bedding Formed as inclined layers of sediments are deposited across a horizontal surface.
Clastic Sedimentary rocks Are formed from the abundant deposits of loose sediments that accumulated on Earths surface.
Clastic These rocks are further classified according to the sizes of their particles.
Porosity Is the percentage of open spaces between grains in a rock.
Evaporite Most commonly form in arid regions and in drainage basins on continents that have low water flow.
Foliated Layers and bands of minerals, metamorphic rocks.
Nonfoliated Metamorphic rocksare composed mainly of minerals that form with blocky crystals shapes.
Regional metamophism High temperature and pressure affect large regions of Earths crust they produce large belts.
Contact metamophism Molten material, such as that in a igneous intrusion, comes in contact with solid rock, a local affect.
Hydrothermal metalmorphism Very hot water reacts with rock and alters its chemical and mineral compositions.
Rock cycle Continuous changing and remaking of rocks.
Created by: BriannaBrooks
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