Caldera collapse: Perspectives from comparing Galápagos volcanoes, nuclear-test sinks, sandbox models, and volcanoes on Mars

@article{Howard2010CalderaCP,
  title={Caldera collapse: Perspectives from comparing Gal{\'a}pagos volcanoes, nuclear-test sinks, sandbox models, and volcanoes on Mars},
  author={Keith A. Howard},
  journal={Gsa Today},
  year={2010},
  volume={20},
  pages={4-10}
}
  • Keith A. Howard
  • Published 2010
  • Geology
  • Gsa Today
  • The 1968 trapdoor collapse (1.5 km 3 ) of Fernandina caldera in the Galapagos Islands developed the same kinds of structures as found in small sandbox-collapse models and in concentrically zoned sinks formed in desert alluvium by fault subsidence into underground nuclear-explosion cavities. Fernandina’s collapse developed through shear failure in which the roof above the evacuating chamber was lowered mostly intact. This coherent subsidence contrasts to chaotic piecemeal collapse at small… CONTINUE READING

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