| The Columbia Encyclopedia, Sixth Edition. 2001-07. |
| |
| silt |
| |
| |
| 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 Columbia Encyclopedia, Sixth Edition. Copyright © 2007 Columbia University Press. |
|
|
