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Chapter 6 Vocab ES

TermDefinition
sediment small pieces of rock that are moved and deposited by water wind glaciers and gravity.
lithification the physical and chemical process that transform sedimentary rocks.
cementation process of sedimentary rock formation that occurs when dissolved minerals precipitate out of groundwater and either a new mineral grows between the sediment grains or the same mineral grows between and over the grains.
bedding horizontal layering in sedimentary rock that can range from a few millimeters to several meters thick.
graded bedding type of bedding in which particle sizes become progressively heavier and coarser toward the bottom layers.
cross-bedding depositional feature of sedimentary rock that forms as inclined layers of sediment are carried forward across a horizontal surface.
clastic sedimentary rock most common type of sedimentary rock formed form the abundant deposits of loose sediments that accumulate on Earth's surface classified according to the size of their particles.
clastic rock and mineral fragments produced by weathering and erosion and classified according to particle size and shape.
porosity percentage of open spaces between grains in a material.
evaporite The layers of chemical sedimentary rocks that form when concentrations of dissolved minerals in a body of water reach saturation due to the evaporation of water crystal grains precipitate out of solution and settle to the bottom.
foliated Metamorphic rock such as schist or gneiss whose minerals are squeezed under high pressure and arranged in wavy layers and bands.
nonfoliated metamorphic rocks like quartzite and marble composed mainly of minerals that form with blocky crystal shapes.
regional metamorphism process that affects large areas of Earth's crust producing belts classified as low medium or high grade depending on pressure on the rocks temperature and depth below the surface.
contact metamorphism local affect that occurs when molten rock meets solid rock.
hydrothermal metamorphism occurs when very hot water reacts with rocks altering its mineralogy and chemistry.
rock cycle Continuous dynamic set of processes by which rocks are changed into other types of rock.
Created by: garrettreed
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