A freshly broken rock shows differential chemical weathering (probably mostly oxidation) progressing inward. This piece of sandstone was found in glacial drift near Angelica, New York
Source: english wikipedia, original upload 17 July 2005 by en:User:Pollinator
A freshly broken rock shows differential chemical weathering (probably mostly oxidation) progressing inward. This piece of sandstone was found in glacial drift near Angelica, New York Source: english wikipedia, original upload 17 July 2005 by [[:en:User: