Hydrogeologic and magmatic controls on phreatomagmatism at the La Garrotxa monogenetic volcanic field (NE of Iberian Peninsula)

Planagumà, Llorenç; Bolós, Xavier; Martí, Joan

doi:10.1016/j.jvolgeores.2023.107894

Cited by 6 publications

(2 citation statements)

References 40 publications

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“…5) (Pedrazzi et al, 2023). In both sectors, volcanic edifices were formed through short-lived monogenetic eruptions with alternating volcanic activity, often transitioning between Strombolian and phreatomagmatic styles (di Traglia et al, 2009;Martí et al, 2011Martí et al, , 2017Planagumà et al, 2023). In many cases, the final stages of volcanic activity also involved the eruption of lava flows that cascaded down the flanks of previously formed cones.…”

Section: Geological Settingmentioning

confidence: 99%

CatVolc: A new database of geochemical and geochronological data of volcanic-related materials from the Catalan Volcanic Zone (Spain)

Geyer,

Miranda-Muruzábal,

Aulinas

et al. 2024

Preprint

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The Catalan Volcanic Zone (CVZ) in northeastern Spain constitutes an intraplate alkaline volcanic region linked to the opening of the Western Mediterranean and the development of the European Rift System. Volcanic activity in the CVZ started in the L’Empordà area (ca. > 12 - 8 Ma), extended to La Selva (7.9 - 1.7 Ma), and finally migrated to the Garrotxa Volcanic Field (< 0.7 - 0.01Ma). Despite ongoing scientific interest in the CVZ dating back to the early 19th century, certain aspects remain insufficiently defined. These include a comprehensive understanding of the spatial and temporal evolution of the magma plumbing system(s) and ascent mechanisms, as well as the chronology of volcanism across the CVZ. Unraveling these unresolved questions requires geochemical, petrological, and geochronological data, which, in the case of the CVZ, are scattered and have never been integrated or analysed within a unified framework. This study introduces the CatVolc (Catalan Volcanism) database, consolidating existing geochemical and geochronological data of volcanic-related materials within the CVZ. The current version of the database incorporates geochemical analyses from 405 rock samples (296 juvenile magmatic rocks -including lavas and pyroclasts- and 109 xenoliths), and radiometric/thermoluminescence dating data from 57 rocks (55 volcanogenic and two dykes), 4 paleosols samples developed between volcanic deposits and 1 sample from sediments. Each entry in the CatVolc database provides general information about the sampling site, sample lithology, whole-rock analyses (including major and trace elements), isotopic ratios, mineral chemistry, and radiometric/thermoluminescence dating details, if available. An initial analysis of the information contained in the CatVolc database highlights the critical limitations of the current state of knowledge and allows suggesting potential future directions for volcanic-driven investigations in the CVZ. Furthermore, the outcomes affirm the CatVolc database as an essential tool for understanding the spatial and temporal evolution of magmatic systems and volcanic activity in the CVZ, particularly within the Garrotxa Volcanic Field. This validation is crucial for advancing the assessment of volcanic hazards in the region and gaining a comprehensive understanding of future volcanic activity. This work has been developed under the financial support of the Institut Cartogràfic i Geològic de Catalunya (ICGC), the Parc Natural de la Zona Volcànica de La Garrotxa (PNZVG), the Fundación General CSIC's ComFuturo programme and the Marie Skłodowska-Curie grant agreement No. 101034263, the collaboration grant 2021 COLAB 00367 funded by the MEFP,  and the grant PID2022-139047NA-I00 funded by MCIN/AEI/ 10.13039/501100011033 and by “ERDF A way of making Europe”.

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Section: Geological Settingmentioning

confidence: 99%

CatVolc: A new database of geochemical and geochronological data of volcanic-related materials from the Catalan Volcanic Zone (Spain)

Geyer,

Miranda-Muruzábal,

Aulinas

et al. 2024

Preprint

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“…Los sistemas basálticos intraplaca, con frecuencia ocurren como campos con desarrollo de pequeños volcanes monogenéticos como los del Campo Húngaro Occidental (Németh, 2010;, y La Garrotxa en España (Planagumà et al, 2023) que están dominados por erupciones de basaltos alcalinos, que varían desde nefelinita/basanita a transicional/subalcalino (Brenna et al, 2021). En el marco de la teoría de tectónica de placas, las erupciones de los volcanes intraplaca no están afectados de manera directa por cualquiera de los límites de placas, ya sean convergentes o divergentes.…”

Section: Introductionunclassified

Evolución volcánica del maar Joya de Los Contreras, San Luis Potosí México, a partir de estratigrafía y análisis de facies

Venegas Rodríguez,

Dávila Harris,

Yutsis

et al. 2024

Geofis Int

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La Joya de Los Contreras es una de cuatro estructuras freatomagmáticas que forman parte del Campo Volcánico Santo Domingo, un campo volcánico monogenético asociado a magmatismo intraplaca del Pleistoceno al norte del estado de San Luis Potosí (México), relacionado a fallamiento extensional y adelgazamiento cortical. Estudios previos incluyen geoquímica de lavas y xenolitos, pero no abundan en la evolución volcánica de la secuencia piroclástica. La Joya de los Contreras es un cráter volcánico excavado en calizas (Formación El Abra, Cretácico superior), de forma elíptica y dimensiones de 1,160 m de diámetro por 210 m de profundidad. Expone lavas máficas en la base (basanitas), un anillo de tobas muy bien preservado y expuesto, y también lavas máficas en la cima de la secuencia. Con el objeto de conocer los procesos magmáticos y freatomagmáticos que le dieron origen, se desarrolló un levantamiento estratigráfico y análisis de facies, petrografía, granulometría, componentes y geoquímica. La secuencia se compone de 1) Unidades pre-maar, lavas máficas, basanitas y aglomerados; 2) Unidades formadoras del maar, tobas conformando el anillo; y 3) Unidades post-maar, lavas coronando la secuencia. Se fechó una de estas últimas en 447 ± 11 ka (edad 40Ar/39Ar en roca total). La historia volcano-estratigráfica resulto en la reconstrucción de 5 fases eruptivas que van de efusiva-estromboliana pre-maar a freatomagmática explosiva, con variaciones en proporciones de interacción agua-magma y cerrando estromboliana-efusiva post-maar. Aunque no hay evidencia directa de una diatrema a profundidad, se infiere su existencia en base a diversos criterios geomorfológicos, tales como el alto volumen de material calcáreo lítico en el anillo de tobas (excavación y relleno – reciclaje), la relación de aspecto del cráter y su relleno.

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Morphometric analysis of monogenetic volcanoes in the Garrotxa Volcanic Field, Iberian Peninsula

Pedrazzi,

Kereszturi,

Geyer

et al. 2024

Geomorphology

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Hydrogeologic and magmatic controls on phreatomagmatism at the La Garrotxa monogenetic volcanic field (NE of Iberian Peninsula)

Cited by 6 publications

References 40 publications

CatVolc: A new database of geochemical and geochronological data of volcanic-related materials from the Catalan Volcanic Zone (Spain)

CatVolc: A new database of geochemical and geochronological data of volcanic-related materials from the Catalan Volcanic Zone (Spain)

Evolución volcánica del maar Joya de Los Contreras, San Luis Potosí México, a partir de estratigrafía y análisis de facies

Morphometric analysis of monogenetic volcanoes in the Garrotxa Volcanic Field, Iberian Peninsula

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