A sedimentary rock, formed from clay or silt that readily splits into layers; used as a roofing material because of its fire resistance and durability. (Phillips, 1994)
« Back to Glossary Indexshale
« Back to Glossary Index
A sedimentary rock, formed from clay or silt that readily splits into layers; used as a roofing material because of its fire resistance and durability. (Phillips, 1994)
« Back to Glossary Index