60°E 60°E 30°E 30°E 0° 0° 30°W 30°W 60°W 60°W 90°W 90°W 120°W 120°W 150°W 150°W 180° 180° 150°E 150°E 120°E 120°E 30°N 30°N 0° 0° 30°S 30°S 90° 90° 60°N 60°N 60°S 60°S 90° 90° Types of volcanoes Calderas, lava domes Stratovolcanoes, compound volcanoes Data from the Smithsonian Institution, Global Volcanism Program, downloaded from http://www.volcano.si.edu/world/glob- allists.cfm Shield volcanoes, fissure vents, submarine volcanoes Active = erupted in the last 10,000 yrs Plate boundaries Data from the US Geological Survey https://www.sciencebase.gov/cata- log/item/4f4e4a48e4b07f02db62303e Map layout and design by Anne E. Egger, 2017 Active volcanoes