The location marked by the black rectangle is characterized by high temperature and pressure. what rock type would most likely be formed in this location?

The rock type is most likely formed from the location as a metamorphic rock. A metamorphic rock results in a change of a rock that already exits. This original rock is subjected to very high amounts of heat and pressure, which will show a cause and/or chemical change. Example of these rock types include marble, slate, gneiss, schist. 

Connecticut, delaware, maryland, massachusetts, new jersey, new york, new hampshire, north carolina, pennsylvania, rhode island, south carolina, virginia