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DIGITAL.CSIC
Conference object . 2024
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DIGITAL.CSIC
Article . 2024
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Volcanes monogenéticos del Campo Volcánico de la Garrotxa, Península Ibérica: análisis morfométrico, procesos eruptivos y peligros asociados

Authors: Pedrazzi, Dario; Kereszturi, G.; Geyer, Adelina; Bolós, Xavier; Granell, J.; Planagumà, Llorenç; Martí Molist, Joan; +1 Authors

Volcanes monogenéticos del Campo Volcánico de la Garrotxa, Península Ibérica: análisis morfométrico, procesos eruptivos y peligros asociados

Abstract

El Campo Volcánico de la Garrotxa (CVG) se encuentra ubicado en el noreste de la Península Ibérica, siendo es el sector más joven dentro de la Zona Volcánica Catalana, una de las provincias volcánicas del Sistema Europeo de Rift. La actividad volcánica, controlada por fallas normales regionales generadas durante la extensión del Neógeno, comenzó hace unos 500.000-700.000 años y fue muy heterogénea, con alternancias de fases magmáticas y freatomagmáticas. A día de hoy, el CVG se considera un campo monogenético activo ya que la última erupción está datada en 11.000-13.000 años atrás. Aunque los conos de escoria constituyen las morfologías predominantes en este campo monogenético, también se identifican conos con actividad magmática-freatomagmática, maars y anillos de toba en más de 50 edificios en total. Este estudio ofrece un análisis morfométrico integral de los edificios volcánicos, contribuyendo a una mejor comprensión tanto de la vulcanoestratigrafía como de la geomorfología. Esta investigación ha incluido trabajo de campo y análisis DEM detallado para determinar con precisión la distribución espacial y los parámetros morfométricos (p.ej., Wco, Wcr, Hmax, Dcrmax y Smean) de las estructuras volcánicas mejor conservadas. Los datos morfométricos se han correlacionado con los estilos/secuencias de erupción, lo que sugiere un impacto notable de la dinámica eruptiva en la morfología de los volcanes.

The Garrotxa Volcanic Field (GVF) is in the northeast of the Iberian Peninsula. It is the youngest area within the Catalan Volcanic Zone, one of the volcanic provinces of the European Rift System. The volcanic activity in the GVF has been controlled by regional normal faults generated during Neogene extension. It began about 500,000-700,000 years ago and was highly variable, including magmatic and phreatomagmatic phases. The GVF is considered an active monogenetic field since the last eruption is dated 11,000-13,000 years ago. Scoria cones constitute the predominant landforms in the GVF, accompanied by lesser occurrences of cones with phreatomagmatic activity and maars and tuff rings, with over 50 scattered eruptive vents. This study offers a comprehensive morphometric analysis of volcanic edifices, contributing to an improved understanding of both the volcanostratigraphy and the geomorphology of the landforms within the GVF. Our approach involved fieldwork and detailed DEM analysis to accurately determine the spatial distribution and morphometric parameters (e.g., Wco, Wcr, Hmax, Dcrmax and Smean) of the best-preserved volcanic structures in the field. Morphometric data were correlated with eruption styles/sequences, suggests notable impact of eruptive dynamics on the morphology of the volcanoes.

Country
Spain
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Keywords

Anillo de toba-maar, DEM, Rift Cenozoico, Cono de escoria, Freatomagmatismo

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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