Silt is formed through the weathering and erosion of rocks and minerals, particularly from the breakdown of larger particles like sand and clay. This process occurs through natural forces such as wind, water, and ice, which grind down the parent material into finer particles. Silt particles are typically between 0.002 and 0.05 millimeters in diameter and can be transported by water or air to settle in various environments, such as riverbeds, floodplains, and lakes. Over time, silt can contribute to soil formation and fertility.
My alluvial island is formed primarily from silt. The barrier of silt is being washed away from the delta!
It is more accurate to say it is formed from clay and silt.
Silt is formed when fine particles of rock and mineral are carried by water and deposited in layers. Factors that contribute to silt formation include erosion of rocks, weathering, and the movement of water.
Over time the silt changes the shape of the river as it is formed into islands, sandbars, and river bends
A delta.
delta
Small particles of sand, silt, and clay
Shale
a delta
It is formed from the silt, sand and small rocks that flow downstream in the river and are deposited in the delta.
Delta
They are formed when water from rain or snow melt leaves mountain valleys and fans out the silt it carries with it.