Silt is granular material of a size between sand and clay and composed mostly of broken grains of quartz.
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19 Facts About Silt
2.
Silt usually has a floury feel when dry, and lacks plasticity when wet.
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3.
Silt can be felt by the tongue as granular when placed on the front teeth .
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4.
Silt is detritus with properties intermediate between sand and clay.
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5.
Silt can be distinguished from clay in the field by its lack of plasticity or cohesiveness and by its grain size.
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Silt grains are large enough to give silt a gritty feel, particularly if a sample is placed between the teeth.
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7.
Silt is a very common material, and it has been estimated that there are a billion trillion trillion silt grains worldwide.
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8.
Silt is abundant in eolian and alluvial deposits, including river deltas, such as the Nile and Niger River deltas.
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10.
Silt is commonly found in suspension in river water, and it makes up over 0.
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11.
Silt is often found in mudrock as thin laminae, as clumps, or dispersed throughout the rock.
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12.
Silt is common throughout the geologic record, but it seems to be particularly common in Quaternary formations.
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13.
Silt is sometimes known as rock flour or glacier meal, especially when produced by glacial action.
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14.
Silt suspended in water draining from glaciers is sometimes known as rock milk or moonmilk.
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15.
Silt deposits seem to be associated with glaciated or mountainous regions in Asia and North America, much emphasis has been placed on glacial grinding as a source of silt.
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16.
Silt seems to be produced in great quantities in dust storms, and silt deposits found Israel, Tunisia, Nigeria, and Saudi Arabia cannot be attributed to glaciation.
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17.
Silt, deposited by annual floods along the Nile River, created the rich, fertile soil that sustained the Ancient Egyptian civilization.
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18.
Silt is susceptible to liquefaction during strong earthquakes due to its lack of plasticity.
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19.
Silt is easily transported in water and is fine enough to be carried long distances by air in the form of dust.
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