Metamorphic rock consists of minerals which were originally sedimentary rock or igneous rock and which have been chemically altered by heat, pressure or the introduction of other chemical substances, but which have not been remelted. This process is called metamorphism or metamorphosis.
Metamorphic rocks are sometimes revealed when plates collide (see obduction and subduction) and mountains are created.
... income for a family is $74,412. Males have a median income of $55,625 versus $33,000 for females. The per capita income for the village is $38,500. 9.0% of the population ...