Rapid onset of mafic magmatism facilitated by volcanic edifice collapse: MAFIC MAGMATISM FACILITATED BY VOLCANIC EDIFICE COLLAPSE
- Cassidy, M.
- Watt, S. F. L.
- Talling, P. J.
- Palmer, M. R.
- Edmonds, M.
- Jutzeler, M.
- Wall-Palmer, D.
- Manga, M.
- Coussens, M.
- Gernon, T.
- Taylor, R. N.
- Michalik, A.
- Inglis, E.
- Breitkreuz, C.
- Le Friant, A.
- Ishizuka, O.
- Boudon, G.
- McCanta, M. C.
- Adachi, T.
- Hornbach, M. J.
- Colas, S. L.
- Endo, D.
- Fujinawa, A.
- Kataoka, K. S.
- Maeno, F.
- Tamura, Y.
- Wang, F.
DOIAbstract
Volcanic edifice collapses generate some of Earth's largest landslides. How such unloading affects the magma storage systems is important for both hazard assessment and for determining long-term controls on volcano growth and decay. Here we present a detailed stratigraphic and petrological analyses of volcanic landslide and eruption deposits offshore Montserrat, in a subduction zone setting, sampled during Integrated Ocean Drilling Program Expedition 340. A large (6–10 km3) collapse of the Soufrière Hills Volcano at ~130 ka was followed by explosive basaltic volcanism and the formation of a new basaltic volcanic center, the South Soufrière Hills, estimated to have initiated <100 years after collapse. This basaltic volcanism was a sharp depa...
Add to ORKG