Geological constraints on the emplacement mechanism of the Parinacota debris avalanche, northern Chile

  title={Geological constraints on the emplacement mechanism of the Parinacota debris avalanche, northern Chile},
  author={Jorge Clavero and R. Stephen J. Sparks and Herbert E. Huppert and W. Brian Dade},
  journal={Bulletin of Volcanology},
Abstract The Holocene Parinacota Volcanic Debris Avalanche (ca. 8,000 years B.P.) is located in the central Andes of northern Chile. The avalanche formed by the sector collapse of a major stratovolcano adjacent to a lake basin in a single, catastrophic event. The deposit has an estimated volume of ca. 6 km3, a run-out of over 22 km, and covers more than 140 km2 of the surrounding terrain. The values of the Heim coefficient (≈0.08) and the ratio A/V2/3 (ca. 50), where A is the area covered and V… Expand

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