Integrated seismic ambient noise, magnetotellurics and gravity data for the 2D interpretation of the Vallès basin structure in the geothermal system of La Garriga-Samalús (NE Spain)

Mitjanas Colls, Gemma; Ledo Fernández, Juanjo; Macau, A.; Alías López, Gemma; Queralt i Capdevila, Pilar; Bellmunt Traver, Fabián; Rivero Marginedas, Lluís; Gabàs, A.; Marcuello Pascual, Alejandro; Benjumea Moreno, Beatriz; Martí, A.; Figueras, S.

Integrated seismic ambient noise, magnetotellurics and gravity data for the 2D interpretation of the Vallès basin structure in the geothermal system of La Garriga-Samalús (NE Spain)

The integration of geophysical methods, together with the previous information of the Vallès basin area, has resulted in the creation of a new conceptual model that explains La Garriga-Samalús geothermal system. The integration of complementary geophysical methods seems to be a good option for the p...

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Autores:	Mitjanas Colls, Gemma, Ledo Fernández, Juanjo, Macau, A., Alías López, Gemma, Queralt i Capdevila, Pilar, Bellmunt Traver, Fabián, Rivero Marginedas, Lluís, Gabàs, A., Marcuello Pascual, Alejandro, Benjumea Moreno, Beatriz, Martí, A., Figueras, S.
Tipo de recurso:	artículo
Estado:	Versión aceptada para publicación
Fecha de publicación:	2021
País:	España
Institución:	Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:	Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:	oai:recercat.cat:2445/181936
Acceso en línea:	https://hdl.handle.net/2445/181936
Access Level:	acceso abierto
Palabra clave:	Prospecció geofísica Escorça terrestre Geomagnetisme Geophysical exploration Earth's crust Geomagnetism

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spelling	Integrated seismic ambient noise, magnetotellurics and gravity data for the 2D interpretation of the Vallès basin structure in the geothermal system of La Garriga-Samalús (NE Spain)Mitjanas Colls, GemmaLedo Fernández, JuanjoMacau, A.Alías López, GemmaQueralt i Capdevila, PilarBellmunt Traver, FabiánRivero Marginedas, LluísGabàs, A.Marcuello Pascual, AlejandroBenjumea Moreno, BeatrizMartí, A.Figueras, S.Prospecció geofísicaEscorça terrestreGeomagnetismeGeophysical explorationEarth's crustGeomagnetismThe integration of geophysical methods, together with the previous information of the Vallès basin area, has resulted in the creation of a new conceptual model that explains La Garriga-Samalús geothermal system. The integration of complementary geophysical methods seems to be a good option for the preliminary stages of a geothermal system exploration, especially in urban areas. An integrated seismic ambient noise, magnetotellurics, and gravity methods were used to determine the geological units and structures which control the La Garriga-Samalús geothermal system. The 2D resistivity and density models have allowed the identification of the four main units which regulate the geothermal system: the Miocene basin, the Prelitoral Range unit, the Vallès Faut Zone, and the Paleozoic basement. The interpretation of our models set the Vallès Fault Zone, which is characterized by an anomalous low resistivity and low density, as the main path for the hot fluids. Moreover, the geophysical characterization established a new geometry for the Miocene basin. The Miocene basin presents a stepwise morphology, with the minor thickness towards the fault and an increasing thickness towards the center of the basin. This geometry seems to be related to synthetic normal faults. These results have evidenced that, although, in some geothermal systems, the warm water may create an insufficient physical contrast; the appropriate use of some techniques can still be useful for the exploration of medium and low-temperature geothermal systems.Elsevier2021202120212021info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersion14 p.application/pdfhttps://hdl.handle.net/2445/181936Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció del document publicat a: https://doi.org/10.1016/j.geothermics.2021.102067Geothermics, 2021, vol. 93, p. 102067https://doi.org/10.1016/j.geothermics.2021.102067cc-by-nc-nd (c) Elsevier, 2021https://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:recercat.cat:2445/1819362026-05-29T05:05:01Z
dc.title.none.fl_str_mv	Integrated seismic ambient noise, magnetotellurics and gravity data for the 2D interpretation of the Vallès basin structure in the geothermal system of La Garriga-Samalús (NE Spain)
title	Integrated seismic ambient noise, magnetotellurics and gravity data for the 2D interpretation of the Vallès basin structure in the geothermal system of La Garriga-Samalús (NE Spain)
spellingShingle	Integrated seismic ambient noise, magnetotellurics and gravity data for the 2D interpretation of the Vallès basin structure in the geothermal system of La Garriga-Samalús (NE Spain) Mitjanas Colls, Gemma Prospecció geofísica Escorça terrestre Geomagnetisme Geophysical exploration Earth's crust Geomagnetism
title_short	Integrated seismic ambient noise, magnetotellurics and gravity data for the 2D interpretation of the Vallès basin structure in the geothermal system of La Garriga-Samalús (NE Spain)
title_full	Integrated seismic ambient noise, magnetotellurics and gravity data for the 2D interpretation of the Vallès basin structure in the geothermal system of La Garriga-Samalús (NE Spain)
title_fullStr	Integrated seismic ambient noise, magnetotellurics and gravity data for the 2D interpretation of the Vallès basin structure in the geothermal system of La Garriga-Samalús (NE Spain)
title_full_unstemmed	Integrated seismic ambient noise, magnetotellurics and gravity data for the 2D interpretation of the Vallès basin structure in the geothermal system of La Garriga-Samalús (NE Spain)
title_sort	Integrated seismic ambient noise, magnetotellurics and gravity data for the 2D interpretation of the Vallès basin structure in the geothermal system of La Garriga-Samalús (NE Spain)
dc.creator.none.fl_str_mv	Mitjanas Colls, Gemma Ledo Fernández, Juanjo Macau, A. Alías López, Gemma Queralt i Capdevila, Pilar Bellmunt Traver, Fabián Rivero Marginedas, Lluís Gabàs, A. Marcuello Pascual, Alejandro Benjumea Moreno, Beatriz Martí, A. Figueras, S.
author	Mitjanas Colls, Gemma
author_facet	Mitjanas Colls, Gemma Ledo Fernández, Juanjo Macau, A. Alías López, Gemma Queralt i Capdevila, Pilar Bellmunt Traver, Fabián Rivero Marginedas, Lluís Gabàs, A. Marcuello Pascual, Alejandro Benjumea Moreno, Beatriz Martí, A. Figueras, S.
author_role	author
author2	Ledo Fernández, Juanjo Macau, A. Alías López, Gemma Queralt i Capdevila, Pilar Bellmunt Traver, Fabián Rivero Marginedas, Lluís Gabàs, A. Marcuello Pascual, Alejandro Benjumea Moreno, Beatriz Martí, A. Figueras, S.
author2_role	author author author author author author author author author author author
dc.subject.none.fl_str_mv	Prospecció geofísica Escorça terrestre Geomagnetisme Geophysical exploration Earth's crust Geomagnetism
topic	Prospecció geofísica Escorça terrestre Geomagnetisme Geophysical exploration Earth's crust Geomagnetism
description	The integration of geophysical methods, together with the previous information of the Vallès basin area, has resulted in the creation of a new conceptual model that explains La Garriga-Samalús geothermal system. The integration of complementary geophysical methods seems to be a good option for the preliminary stages of a geothermal system exploration, especially in urban areas. An integrated seismic ambient noise, magnetotellurics, and gravity methods were used to determine the geological units and structures which control the La Garriga-Samalús geothermal system. The 2D resistivity and density models have allowed the identification of the four main units which regulate the geothermal system: the Miocene basin, the Prelitoral Range unit, the Vallès Faut Zone, and the Paleozoic basement. The interpretation of our models set the Vallès Fault Zone, which is characterized by an anomalous low resistivity and low density, as the main path for the hot fluids. Moreover, the geophysical characterization established a new geometry for the Miocene basin. The Miocene basin presents a stepwise morphology, with the minor thickness towards the fault and an increasing thickness towards the center of the basin. This geometry seems to be related to synthetic normal faults. These results have evidenced that, although, in some geothermal systems, the warm water may create an insufficient physical contrast; the appropriate use of some techniques can still be useful for the exploration of medium and low-temperature geothermal systems.
publishDate	2021
dc.date.none.fl_str_mv	2021 2021 2021 2021
dc.type.none.fl_str_mv	info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion
format	article
status_str	acceptedVersion
dc.identifier.none.fl_str_mv	https://hdl.handle.net/2445/181936
url	https://hdl.handle.net/2445/181936
dc.language.none.fl_str_mv	Inglés
language_invalid_str_mv	Inglés
dc.relation.none.fl_str_mv	Reproducció del document publicat a: https://doi.org/10.1016/j.geothermics.2021.102067 Geothermics, 2021, vol. 93, p. 102067 https://doi.org/10.1016/j.geothermics.2021.102067
dc.rights.none.fl_str_mv	cc-by-nc-nd (c) Elsevier, 2021 https://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess
rights_invalid_str_mv	cc-by-nc-nd (c) Elsevier, 2021 https://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv	openAccess
dc.format.none.fl_str_mv	14 p. application/pdf
dc.publisher.none.fl_str_mv	Elsevier
publisher.none.fl_str_mv	Elsevier
dc.source.none.fl_str_mv	Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada) reponame:Recercat. Dipósit de la Recerca de Catalunya instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str	Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str	Recercat. Dipósit de la Recerca de Catalunya
collection	Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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Integrated seismic ambient noise, magnetotellurics and gravity data for the 2D interpretation of the Vallès basin structure in the geothermal system of La Garriga-Samalús (NE Spain)

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