Node "Recipe" For Asphalt? Is there any sort of node "recipe" or tricks for making asphalt? I'm making a road and I was wondering if there is a way of using shaders and/or other things in the editor to make it look more realistic?

This is intended for use in Cycles.
I would start with a Voronoi texture as displacement map to get the "pebbles", then disrupt that texture with other kinds of noise.