Fibers from the medial side of each eye cross over to the opposite side of the brain at the?
The definition of metamorphic is characterized or formed by changing. An example of something metamorphic is a caterpillar turning into a butterfly; a metamorphic animal. of, characterized by, causing, or formed by metamorphism or metamorphosis.
Metamorphic grade is a general term for describing the relative temperature and pressure conditions under which metamorphic rocks form. As the temperature and/or pressure increases on a body of rock we say that the rock undergoes prograde metamorphism or that the grade of metamorphism increases.he original rock that has undergone metamorphism is called the protolith. Protolith can be any type of rock and sometimes the changes in texture and mineralogy are so dramatic that is difficult to distinguish what the protolith was. 1  Note that diagenesis and weathering are also a changes in form that occur in rocks.