It’s simply beautiful how it is done. First, water sorts out the finest grains of silt, and deposits them on the surface of low points in the earth, filling them in. Then the sun evaporates the water, and  cracks the silt all crazy like.
Wind and gravity (and birds passing through the seasons) deposit feathers and leaves. The angular effect of the sun on the fluid shape of the silt holds them from drifting.
When the rains come again to the lowest ground, it fills the cracks, softens leaf and feather, and then deposits new silt around them.

They are now mixed in.

The cycle repeats with each season, or each thundercloud.

This is the lightning of the earth.

Beautiful, isn’t it!

What exquisite music.