Question #4a6b5
1 Answer
Oct 5, 2017
Subduction zones
Explanation:
Metamorphic rocks are formed when sedimentary, igneous , and other metamorphic rocks are pushed down, buried and subjected to heat and pressure.
At convergent boundaries rock strata are commonly pushed down carried deeper into the earth's crust by the postulated convection currents. As the strata are pushed down the rocks are subjected to heat and pressure. The heat and pressure causes both physical and chemical changes within the rocks. These physical and chemical changes are what creates metamorphic rocks.
The subduction zones are convergent boundaries where one crustal plate is forced under another crustal plate. It is at these subduction zones that metaphoric rocks are most commonly formed.
