As the part of the rocks cycle the rocks are formed and transformed by the heat and pressure that are then converted into the metamorphic rocks due to intense heat and pressure if the over long accumulations of the process of the dynamic or contact metamorphism.
The arrows pointing to the metamorphic rocks are the ones that represent processes that require heat and pressure. The rock cycle is a term that refers to the process of the transitions among the three main rock types: sedimentary, metamorphic, igneous. It shows how these rock types are related to each other. High temperature and pressure can change rocks physically and chemically and turn them into metamorphic rocks.
