SlateSlate is often a wonderful-grained clayey metamorphic rock that cleaves, or splits, readily into slim slabs possessing good tensile power and longevity. Over a lot of several years the sediment builds up, hardens, and results in being stable rock. Sandstone is really a sedimentary rock that varieties in this manner. https://sticksofrock24567.blogsvirals.com/35273241/rock-sticks-secrets