Explosive volcanism (VEI 6) without caldera formation: insight from Huaynaputina volcano, southern Peru

@article{Lavalle2006ExplosiveV,
  title={Explosive volcanism (VEI 6) without caldera formation: insight from Huaynaputina volcano, southern Peru},
  author={Yan Lavall{\'e}e and Shanaka L. de Silva and Guido Salas and Jeffrey Myer Byrnes},
  journal={Bulletin of Volcanology},
  year={2006},
  volume={68},
  pages={333-348}
}
Through examination of the vent region of Volcán Huaynaputina, Peru, we address why some major explosive eruptions do not produce an equivalent caldera at the eruption site. Here, in 1600, more than 11 km3 DRE (VEI 6) were erupted in three stages without developing a volumetrically equivalent caldera. Fieldwork and analysis of aerial photographs reveal evidence for cryptic collapse in the form of two small subsidence structures. The first is a small non-coherent collapse that is superimposed on… 
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