[editor-surveyor]

"What is marble, O beyond-my-level one?"

Marble is calcium carbonate with various impurities acquired as the solution from which it recrystallized passed through other substances. Marble varies considerably from place to place.

[blowfish]

Marble is calcium carbonate with various impurities acquired as the solution from which it recrystallized passed through other substances.

I think this post pretty well says it all... =:^D

[VadeRetro]

IOW, ordinary sedimentary limestone which has been buried deeply and pressed to at least partial melting over long periods of time.

[VadeRetro]

An animation of sedimentary rock subducting and metamorphic rock forming.

http://www.fi.edu/fellows/payton/rocks/create/metamorph.htm

This is mainstream, evidence-based geology. Not a 10,000-mile-high mountain in sight.

[VadeRetro]

http://www.uwsp.edu/geo/faculty/ritter/glossary/l_n/metamorphic_rock.html

You may have your own cultist version of anything at all. However ... remembering how FR views things ... it can be called very bad manners to claim that your version IS the mainstream version when such is far from true.