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sediment

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Sediment


Any loose material that has ‘settled’ after deposition from suspension in water, ice, or air, generally as the water current or wind speed decreases. Typical sediments are, in order of increasing coarseness: clay, mud, silt, sand, gravel, pebbles, cobbles, and boulders.

Sediments differ from sedimentary rocks, in which deposits are fused together in a solid mass of rock by a process called lithification (solidification). Pebbles are cemented into conglomerates; sands become sandstones; muds become mudstones or shales; peat is transformed into coal.

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atmosphere (earth science)
basalt
bed
breccia
calcium carbonate
calcium hydroxide
carbon cycle
carbon dioxide
carbonate
cementation
chalk (rock)
chemical weathering
coastal erosion
conglomerate (geology)
continental drift
core (earth science)
crust
earthquake
erosion
evaporation
exfoliation
extrusive rock
fault
fertilizer
fold
fossil
freeze–thaw
global warming
gneiss
granite
gravel
greenhouse effect
helium
igneous rock
intrusive rock
krypton
lava
limestone
lithification
lithosphere
magma
mantle
marble
metamorphic rock
metamorphism
mineral
neon
nitrate
nitrogen
nitrogen cycle
ocean
oxygen
physical weathering
plate
plate tectonics
plutonic rock
pollution
Precambrian era
rock
rock cycle
sandstone
schist
seafloor spreading
seawater
sediment
sedimentary rock
shale
silica
slate
soil
volcano
water
water cycle
water pollution
weathering

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