Benefits of a Mentor. Months after landing a job at a Minneapolis-based public-relations firm, Tameka Davis was still looking for guidance on how to excel at the company and eventually move up the ladder. So she signed up for her employer's mentoring program. The now-26-year-old was taken under the wing of an older co-worker for a year, and the benefits were...
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. metamorphic. metamorphic.
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 Â°C) and pressure (150 megapascals (1,500 bar)), causing profound physical and/or chemical change. The protolith may be a sedimentary, an igneous, or even an existing type of metamorphic rock. Metamorphic rocks make up a large part of the Earth's crust and form 12% of the Earth's current land surface. They are classified by texture and by chemical and mineral assemblage (metamorphic facies).