Slate Slate Slate is a fine-grained, foliated, homogeneous metamorphic rock derived from an original shale-type sedimentary rock composed of clay or volcanic ash through low-grade regional metamorphism. It is the finest grained foliated metamorphic rock. Foliation may not correspond to the original sedimentary layering, but instead is in planes perpendicular to the direction of metamorphic compression. The foliation in slate is called "slaty cleavage". It is caused by strong compression causing fine grained clay flakes to regrow in planes perpendicular to the compression. When expertly "cut" by striking parallel to the foliation, with a specialized tool in the quarry, many slates
Now That's What I Call Rock of "Now" features contemporary pop acts with rock roots and takes a "big-tent" approach to the genre. Cliff Chenfeld, co-owner of the Razor & Tie and a consultant for "Now That’s What I Call Rock", feels "most music listeners are pretty open" and this release "is a means of introducing some of those bands to that broader audience who I think would embrace it." The compilers of the set wanted to avoid defining what rock music is in 2016, but instead tried to give what people think it is, "as opposed to using a term for rock that might have