Which types of Metamorphism creates ore deposits in the roots of a volcano?

Answer 1

Contact metamorphism
Contact metamorphism can either happen deep underground or at the Earth's surface. Underground, hot magma, fills areas within the crust; large areas are called batholiths. The hot magma alters the surrounding rocks. The amount of rock that is changed depends on how much magma there is producing heat. The zone of altered rock around a batholith is called an aureole and it may cover more than 100 square kilometers of land. Above ground, lava erupting from a volcano alters the rock that it erupts onto.

Answer 2

metamorphism oesnt create ore deposits, its the ppt (percipitation)of fluids that make the majority of mineral deposits. these fluids in general come from a magmatic source such as a batholith or a magma chamber under a volcano. teh fluid is derived from the exsolution of fluids (water and carbon dioxide mainly) in the chambers which is expelled along with minerals and permiates along fractures, faults and permeable rocks to a point where the pressure and temperature conditions allows ppt of the minerals out of the fluid.
there is some metamorphic fluids derived from regional metamorphism creating fluid phases in the metamorphic process these "dissolve" minerals in the original rock and are again ppt when pressure and temperature conditions allow. this is not normally a volcanic prosses.

hope this helps

Answer 3

Hydrothermal (hot water) metamorphism. This process is sometimes called metasomatism.