Qualibou
Qualibou, također poznat kao vulkanski centar Soufrière, je kaldera[1] dimenzija 3,5 × 5 km na otoku Sveta Lucija, koja je nastala prije između 32 000 i 39 000 godina. Ova erupcija također je formirala Choiseulski tuf koji prekriva jugoistočni dio otoka.
Pitons su dvije velike kupole lave koje su nastale prije 200 do 300 tisuća godina, prije formiranja kaldere; od tada su druge kupole ispunjavale dno kaldere. Godine 1766. dogodila se freatična erupcija koja je nataložila vulkanski pepeo na širokom području.
Sulphur Springs je aktivno geotermalno područje smješteno otprilike u središtu kaldere.
Godine 1990., 1999. i 2000. dogodili su se plitki vulkanski potresi smješteni 6 km istočno-jugoistočno od kaldere.[2]
Izvori
- ↑ Report on Qualibou (Saint Lucia). Bulletin of the Global Volcanism Network. 15 (5). 1990. doi:10.5479/si.GVP.BGVN199005-360140
- ↑ The University of the West Indies Seismic Research Centre (www.uwiseismic.com). St Lucia
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