Global Volcanism Program
By A Mystery Man Writer
Last updated 18 Jun 2024
El Misti is a symmetrical andesitic stratovolcano with nested summit craters that towers above the city of Arequipa, Peru. The modern symmetrical cone, constructed within a small 1.5 x 2 km wide summit caldera that formed between about 13,700 and 11,300 years ago, caps older Pleistocene volcanoes that underwent caldera collapse about 50,000 years ago. A large scoria cone has grown with the 830-m-wide outer summit crater. At least 20 tephra-fall deposits and numerous pyroclastic-flow deposits have been documented during the past 50,000 years, including a pyroclastic flow that traveled 12 km to the south about 2000 years ago. The most recent activity has been dominantly pyroclastic, and strong winds have formed a parabolic dune field of volcanic ash extending up to 20 km downwind. An eruption in the 15th century affected nearby Inca inhabitants. Some reports of historical eruptions may represent increased fumarolic activity.
Global Volcanism Program
GLOBAL VOLCANISM PROGRAM -VOLCÁN PACAYA
Global Volcanism Program
Global Volcanism Program
Global Volcanism Program
Global Volcanism Program
Global Volcanism Program Has volcanic activity been increasing?
Global Volcanism Program
Global Volcanism Program
Global Volcanism Program
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