Are There Different Grades Of Decomposed Granite. The final layer of a gravel driveway consists of smaller gravel blended with coarse rock dust known as fines crushed stone 411 which is a mixture of 57 stone and coarse rock dust is a. Decomposed granite as paving material. It s usually rust colored and fades to tan in the sun.
Decomposed granite the basics. Decomposed granite is like gravel but finer and generally more stable.
Photograph by mimi giboin.
There are 3 different levels of granite. Decomposed granite or dg is a granitic rock that has weathered to the point of breaking into very small pieces and silt like particles. Decomposed granite the basics. For road and paver.
