The Robertson River Igneous Suite extends from south of Laurel Mills ( originating near Charlottesville ) .
The Robertson River Igneous Suite runs north - northeast through Hackleys Crossroad and beyond in a band approximately four kilometers wide .
The Robertson River Igneous Suite extends from south of Laurel Mills ( originating near Charlottesville ) and runs north - northeast through Hackleys Crossroad and beyond in a band approximately four kilometers wide .