Preferred term
silt
Definition
- [ ENM ][ ECSO ] Silt is granular material of a size somewhere between sand and clay whose mineral origin is quartz and feldspar. Wikipedia: In the Udden-Wentworth scale (due to Krumbein), silt particles range between 0.0039 to 0.0625 mm, larger than clay but smaller than sand particles. ISO 14688 grades silts between 0.002 mm and 0.063 mm. In actuality, silt is chemically distinct from clay, and unlike clay, grains of silt are approximately the same size in all dimensions; furthermore, their size ranges overlap. Clays are formed from thin plate-shaped particles held together by electrostatic forces, so present a cohesion. According to the U.S. Department of Agriculture Soil Texture Classification system, the sand-silt distinction is made at the 0.05 mm particle size. The USDA system has been adopted by the Food and Agriculture Organization (FAO). In the Unified Soil Classification System (USCS) and the AASHTO Soil Classification system, the sand-silt distinction is made at the 0.075 mm particle size (i.e., material passing the #200 sieve). Silts and clays are distinguished mechanically by their plasticity.
Broader concept
Creator
- herbert.schentz@umweltbundesamt.at
In other languages
Arabic
- غرين
Bulgarian
- Тиня, утайка, нанос
Croatian
- mulj
Czech
- naplavenina
Danish
- silt
Dutch
- slib
Estonian
- tolm (pedol), möll (geol), aleuriit
Finnish
- siltti, muta, pohjalieju
French
- limon
German
- Schlick
Greek
- (φυσική) ιλύς
Hungarian
- iszaptalaj
Italian
- limo
Latvian
- nogulumi; sanesas
Lithuanian
- dumblas; sąnašos
Norwegian
- silt
Polish
- muł
Portuguese
- sedimentos finos
Romanian
- sedimente fine
Slovak
- naplavenina
Slovenian
- mulj
Spanish
- légamo
Swedish
- mjäla
URI
http://vocabs.lter-europe.net/EnvThes/20922