Answer Happy

intermediate silica magma found in continental US and Alaska vent gases explosive eruptions high-silica magma form chains of volcanic islands have a triangular shape in profile Stratovolcanoes All three Types. main product-lava mild eruptions composition mainly tephra low silica magma principal rock type basalt example: Mauna Loa pose greatest hazards Cinder Cones Stratovolcanoes and Cinder Cones associated with subduction zone principal rock type-andesite found in Hawaii smallest volcanoes largest volcanoes example: Mount Hood, Oregon magma from partial melting of mantle Shield Volcanoes Strato- and Shield Volcanoes