Question

what do we get when coal and limestone are metamorphosed?

Answer 1

Into the case of coal, there are two possible outcomes. When a coal seam is intersected by, or intruded by an igneous dike or sill, where the principal effect is elevated temperature, rather than pressure, it produces natural coke, which is a soft, porous, disordered carbon-enriched residue of the original coal. This is described as “contact metamorphism”. The effects of the thermal metamorphism is quite limited, being only around ~2X the thickness of the intrusive dike or sill.

Coal seams in the Raton Basin in northern New Mexico and southern Colorado have been extensively intruded by dikes and sills associated with the Spanish Peaks volcanic complex. (I worked on a coalbed methane project out there years ago. Fascinating geology.
i hope it help you

Answer 2

Answer:

thank you for asking this question. it helped me a lot.