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 changed because these documents are "matters of fact", which means that they were correct at the time they were issued. Documentary evidence of a change of name can be in a number of forms, such as a marriage certificate, decree absolute, civil partnership certificate, statutory declaration or deed of change of name. Such documents are mere evidence that a change of name has occurred, however, and they do not themselves operate to change a person's name. Deeds of change of name are by far the most commonly used method of providing evidence of a change of name other than changing