Furna do Enxofre lava cave (Azores, Portugal)

Furna do Enxofre lava cave inside the Caldera Graciosa, Ilha Graciosa (Image credits:http://www.geocaching.com).

Volcano: Ilha Graciosa (see Ilha Graciosa at the Smithsonian Institution website in a new tab)
Type: Soil Diffuse Emission
Description: The Furna do Enxofre, situated in the south-eastern part of the Caldeira da Ilha Graciosa, is an impressive lava cave, whose main feature is its perfect dome-shaped roof. Inside the Furna do Enxofre, there is an important field of gases release, formed by geysers, mud and diffuse gas emanations of carbon dioxide. These gases are released often seamlessly in various areas of the cave floor.

Point of contact for this site:
Teresa Ferreira, Teresa.JL.Ferreira@azores.gov.pt (Centro de Vulcanologia e Avaliação de Riscos Geológicos)

No measurements available for this site.

Bibliographic references for this site

Ferreira, T., Gaspar, J.L., Viveiros, F., Marcos, M., Faria, C., Sousa, F., 2005,Monitoring of fumarole discharge and CO2 soil degassing in the Azores: contribution to volcanic surveillance and public health risk assessment, Annals of Geophysics, vol.48, n.4/5, pp. 787-796, DOI: 10.4401/ag-3234

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