Metamorphic rock the foliation is called "gneissosity"), granoblastic (includes granulite, some marbles and quartzite), and hornfelsic (includes hornfels and skarn). Metamorphic rock Metamorphic rocks arise from the transformation of existing rock types, in a process called metamorphism, which means "change in form". The original rock (protolith) is subjected to heat (temperatures greater than 150 to 200 °C) and pressure ( or more), causing profound physical or chemical change. The protolith may be a sedimentary, igneous, or existing metamorphic rock. Metamorphic rocks make up a large part of the Earth's crust and form 12% of the Earth's land surface. They are classified by
Name change of all citizens and permanent residents is recorded on the Population Register, so any name changes must be registered. A person can change their forenames by submitting a form to the Department of Home Affairs. An individual's surname, or that of a family, may be changed by applying to the Department and providing a "good and sufficient reason" for the change. A married woman can change her surname to that of her husband or join her maiden name with her husband's surname, and a divorced woman may return to her previous surname, without applying or paying a fee; but she