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What is Tacaná Volcano Flank Collapse Study about?

During the late Pleistocene, growth of an andesitic dome at Tacaná volcano triggered a flank collapse along the northwest side. This generated a debris avalanche that traveled 8 km and covered 4 square km. Subsequent dome collapse produced block-and-ash flows over the avalanche deposits. Radiocarbon dating provides a minimum age of 10,610 years for the collapse. The failure orientation suggests it was controlled by the regional stress field. The paper analyzes the deposits to understand the collapse trigger

Author

Lup Bello

Language

EN