Mauna Loa volcano in Hawaii and Mount Pinatubo in the Philippines have different eruption styles due to differences in their plate tectonic settings and magma compositions. Mauna Loa is a shield volcano located on the Pacific plate, which erupts less viscous basalt lava in non-explosive eruptions. Mount Pinatubo is a stratovolcano over a subduction zone, and its more viscous andesitic and dacitic magmas lead to more explosive eruptions than those seen at Mauna Loa.