What type of metamorphism would you expect to be occurring now at a depth of 30

Question

What type of metamorphism would you expect to be occurring now at a depth of 30 km in the Himalaya?Brutal metamorphism and or Contact metamorphism and or Dynamic metamorphism and or Hydrothermal methamorphism and or Regional methamorphism and or Shock methamorphism? --What is its metamorphic facies of Amthibolite? Amthibolte is metamorphosed basalt. It contains green amphibole and plagioclase. What is its metamorphic facies? Amthibolite faces or Blueschist facies, or Eclogite faces, or Granulite facies, or Hornfels facies? ---By which process Amthibolite most likely to have been metamorphosed? Firt-related contact methamorphism or Collisional orogenesis or Subduction metamorphism? ----Which process/es bring/s metamorphic rocks to the surface by primarily horizontal motion? Erosion and or Exhumation and or Extensional collaps and or Tectonic uplift?

Explanation / Answer

Metamorphism is classified into different kinds. Metamorphism is directly related to plate tectonics. Dynamic metamorphism is produced under mechanical forces such as stress and pressure. Hydrothermal metamorphism occur when hot and chemically activated water reacts with surrounding existing rocks. These two kinds associated with plate tectonic region where two plates converge such as himilayan region. Therefore, the correct option is dynamic and or hydrothermal mechanism.

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