surname. 1  the name that a person has in common with other family members, as distinguished from a Christian name or given name; family name. 2  a name added to a person's name, as one indicating a circumstance of birth or some characteristic or achievement; epithet. 3  to give a surname to; call by a surname.
Best Answer: It depends on the rock, but typically about 600 C (1100 F) to 1200 C (2200 F). Quartz or quartz rich rocks have the lowest melting point, and basaltic ...
Quick Answer. The molten rock below the Earthâs surface is known as magma. Magma is a combination of a molten and semi-molten rock mixture that is extremely hot. Magma is between 1,292 and 2,372 degrees Fahrenheit, or 700 and 1,300 degrees Celsius.