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
Name change application of this kind is allowed for each applicant; any application for subsequent change(s) must be made with a deed poll. In the Republic of Ireland, a person earns their name by "use and repute". For most purposes it is enough to simply use the desired name and ask others to call you by that name. For some administrative purposes, such as changing a name on a driving licence or legally changing gender, a deed of change of name must be registered with the Four Courts. From September 1995, New Zealanders can change their name by making a statutory declaration