Pyroclastic flows related to the collapse of trachytic domes in the Middle Miocene Volcanic Edifice of Jandía (Fuerteventura, Canary Islands)
DOI:
https://doi.org/10.55407/geogaceta102378Keywords:
Jandía Miocene volcanic edifice, Fuerteventura, pyroclastic flows, pyroclastic surges, trachytic domesAbstract
The eastern sector of the Middle Miocene Jandía Volcanic Edifice is essentially constituted by a sequence of felsic domes and pyroclastic rocks separated by basaltic agglomerates that mark important events of erosion and volcanic activity gaps. Pyroclastic levels, which include welded felsic tuffs and interstratified levels of pumice, ashs and lapilli, are interpreted as the result of pyroclastic flows (block and ash flows) and pyroclastic surges (base surges, ash cloud surges and ground surges) deposits, related to the volcanic activity of trachytic domes, such as the Cofete Islet dome, originated by hydromagmatic eruptions (base surge deposits) and explosive gravitational collapse of domes (block and ash flow deposits). Ash cloud surges and ground surges associated to the block and ash flows are forming underlying, interstratified and overlying deposits to the welded felsic tuffs. Some of these pyroclastic surges surpassed the stoppage zone of the pyroclastic flows, reaching areas located far from the erupting domes.
References
Ancochea, E., Brandle, J.L., Cubas, C. R., Hernán, F. y Huertas, M. J. (1993). La Serie I de la Isla de Fuerteventura. Memoria de la Real Academia de Ciencias Exactas, Físicas y Naturales. Servicio de Ciencias Naturales, 27, 151 p.
Ancochea, E., Brändle, J.L., Cubas, C.R., Hernán, F. y Huertas, M.J. (1996a). Journal of Volcanology and Geothermal Research 70, 183-204. https://doi.org/10.1016/0377-0273(95)00051-8
Ancochea, E., Brändle, J.L., Cubas, C.R., Hernán, F. y Huertas, M.J. (1996b). Geogaceta 11, 5-38.
Balcells, R., Barrera, J.L., Gómez, J.A., Cueto, L.A., Ancochea, E., Huertas, M. J., Ibarrola, E. y Snelling, N. (1994). Boletín Geológico y Minero 35, 450-470.
Cubas, C.R., Fernandez Santín, S., Hernán, F., Hernández-Pacheco, A. y de la Nuez, J. (1989). Revista de Materiales y Procesos 6, 71-97.
Cubas, C.R., Hernán, F., Ancochea, E. y Brändle, J.L. (1992). Geogaceta 11, 79-81.
Cueto Pascual, L.A., Balcells Herrera, R., Barrera Morate, J.L., Gómez Sainz de Aja, J.A., Ancochea Soto, E., Cubas Padilla, C.R. y Hernán Reguera, F. (2004a). Mapa Geológico de España 1:25.000, hoja nº 1102-II/1110-I-IV (Cofete-Morro del Jable) y memoria. IGME. Madrid, 85 p.
Cueto Pascual, L.A., Barrera Morate, J.L., Gómez Sainz de Aja, J.A., Ancochea Soto, E., Cubas Padilla, C.R. y Hernán Reguera, F. (2004b). Mapa Geológico de España 1:25.000, hoja nº 1103-III (El Jable) y memoria. IGME. Madrid, 64 p.
Muñoz, M. (1969). Estudios Geológicos 25, 257-310.
Wilson, C.J.N. (1980). Journal of Volcanology and Geothermal Research 8, 231-249. https://doi.org/10.1016/0377-0273(80)90106-7
Downloads
Published
How to Cite
Issue
Section
License
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Until the year 2023 the author assigned the copyright to the Sociedad Geológica de España, but from 2024 the author retains the copyright and grants the Sociedad Geológica de España the right of first publication and non-exclusive distribution of each article in all current or future media, while transferring, also non-exclusively, the commercial rights for the distribution of the printed version of Geogaceta. On the other hand, the articles, from the year 2023, are available simultaneously with their publication, under the Creative Commons CC BY-NC-SA 4.0 license, which allows copying, transforming the work, but if any transformation is distributed, the new work must be distributed under the same license, and never for commercial purposes, while acknowledging the authorship and original publication in GEOGACETA, so that the only role of copyright is to give authors control over the integrity of their works and the right to be properly acknowledged and cited.
