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Here in Texas, we use the the term "caliche" often to refer to a stone/clay mix for driveways in rural areas, however, I was wondering if that term is used in other parts of the country or is more regionally based. I am originally from the Northeast (Upstate NY) and never recall hearing that term, but there is plenty of clay/stone soil here in Texas where as less so, at least in the part I am from. I have also seen the term "road" base used to describe a similar product here in Texas. Thanks.