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.
... and provocative clothing or to be seen smoking or drinking in public.
Flappers had their origins in the Gibson girls[?] of the 1890s. Named for the drawings of Charles ...