Metamorphic rock 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 texture and by chemical and mineral assemblage (metamorphic facies). They may be formed simply by being deep beneath
Name change adopt western-style English names after being registered on the birth register, the fact that they want to include a western-style English name as part of their legal English name is regarded as a name change which usually requires a deed poll. However, the Immigration Department which is responsible for processing applications for name change allows applicants to submit such applications without deeds poll; anyone who has a phonetic English name only and wishes to include a western-style English name as part of his or her legal English name can apply to the Immigration Department without a deed poll. Only one