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Related to silt: silt soil


predominantly quartz mineral particles that are between sand size and clay size, i.e., between 1-16 and 1-256 mm ( 1-406 – 1-6502 in.) in diameter. Silt, like clay and sand, is a product of the weathering and decomposition of preexisting rock. Hardened silt forms a sedimentary rock called siltstone, which tends to deposit in thin layers sometimes referred to as flagstone because it is hard, durable, and flat, breaking into nearly rectangular slabs.



the fine-grained, soft sediment on the bottom of bodies of water, not altered by diagenesis. Between 30 and 50 percent of the particles it contains are less than 0.01 mm in size. Occurring in a fluid state under natural conditions, it assumes the properties of a solid body when dry. On the bottom of seas and continental bodies of water (lakes, rivers, and ponds) there are silts consisting of fine-grained products of rock decomposition (terrigenous, clayey, and lime silts) and silts made up of microscopic shells or the skeletal remains of marine organisms (globigerina, diatomaceous, radiolarian, pteropod silts). Silts that have been enriched by volcanic ash (volcanic mud) form a separate category. Sometimes silts are enriched with organic matter (sapro-pel) whose decay causes hydrogen sulfide contamination or putrefaction (“putrid silt”).

Some silts, including lake, pond, and lagoon silts, are used as fertilizer and for mineral feed supplements for livestock; they are also used in medicine, for pelotherapy.


A rock fragment or a mineral or detrital particle in the soil having a diameter of 0.002-0.05 millimeter that is, smaller than fine sand and larger than coarse clay.
Sediment carried or deposited by water.
Soil containing at least 80% silt and less than 12% clay.

silt, inorganic silt, rock flour

A granular material that is nonplastic or very slightly plastic and exhibits little or no strength when air-dried; usually has a grain size between 0.002 mm and 0.05 mm in diameter.


a fine deposit of mud, clay, etc., esp one in a river or lake
References in periodicals archive ?
According to the schedule, in first phase, silt will be removed in east circle canals and in second phase, silt will be removed from west circle canals.
We also hypothesised that vegetation biomass and SOC content would correlate better with the silt + clay content than with the clay content because of the limited clay range in desert soils.
We advertise the fishing trip as a five-hour one, when in reality we can only offer people a four and a half hour trip because of the silt.
The council's deputy leader David Sage said: "Our contractors are on site and have confirmed that the removal of the silt extracted as part of the construction of the new marina and temporarily stored at Salt Lake is well under way.
Some of the oldest human footprints in the world > were found in silt on the beach at Happisburgh, Norfolk
Even the size of the lake that was nearly three-square kilometers has diminished to one third because of heavy silt and weed deposition.
In this case, the studies of dry regions of Iran indicate that sediment production due to gully development is related to three variables including drainage area, silt and sand percent of the watershed above the gully heads [10].
Lakes are subject to decline due to the silt accumulating in them, the shores become overgrown with excessive vegetation, this causing a serious ecological problem--eutrophication takes place.
And the quake pushed up watery silt in the streets - known as liquefaction.
A silt fence is composed of the geotextile fabric, sometimes reinforced with a wire mesh backing, and attached to wooden or metal stakes.
According to sources, the Japanese assistance would be used to acquire the dredging facility at the Pasni Harbour, as the Karachi Port Trust (KPT) had failed to clear the silt in the navigation channel.