silt

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 Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.

More on silt from Fact Monster:

  • Pottery - A history of clay and pottery
  • flagstone - flagstone: flagstone: see silt.
  • loam - loam loam, soil composed of sand, silt, clay, and organic matter in evenly mixed particles of ...
  • Berenice, city, ancient Egypt - Berenice Berenice or Berenike,city of ancient Egypt, on the Red Sea. Founded by Ptolemy II and ...
  • Lake Pepin - Pepin, Lake Pepin, Lake , a widening of the Mississippi River, 21 mi (34 km) long and c.3 mi (5 km) ...

See more Encyclopedia articles on: Geology and Oceanography