Wherever mantle is able to melt, volcanoes may be the result. See if you can give a geological explanation for the locations of all the volcanoes in figure 1. Why are the Hawaiian volcanoes located aw...Wherever mantle is able to melt, volcanoes may be the result. See if you can give a geological explanation for the locations of all the volcanoes in figure 1. Why are the Hawaiian volcanoes located away from any plate boundaries? What is the cause of the volcanoes along the mid-Atlantic ridge? Be sure to think about how melting occurs in each of the following volcanic settings. The learning activities for this section include the following: Self Check: The Formation of Volcanoes