Imaging the volcanic structures beneath Gran Canaria Island using new gravity data

From a new gravity data set that covers homogeneously the whole surface of Gran Canaria (Canary Islands, Spain) and marine gravity data in the nearest offshore, we have obtained a Bouguer anomaly gravity map of the island which improves the previous ones. Using these gravity anomalies, we have appli...

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Detalles Bibliográficos
Autores: González Montesinos, Fuensanta, Arnoso Sampedro, José, Gómez Ortiz, David, Benavent Merchán, María Teresa, Blanco Montenegro, Isabel, Vélez, Emilio, Martín Crespo, Tomás, Gorbatikov, A. V., Stepanova, Marina Yu
Tipo de recurso: artículo
Fecha de publicación:2022
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/72552
Acceso en línea:https://hdl.handle.net/20.500.14352/72552
Access Level:acceso abierto
Palabra clave:Canary Islandas
Gravity
Potential fields
Inverse problem
Volcano
Gravity inversion
Subsurface structure model
Volcanic islands
Geofísica
Geodesia
2507 Geofísica
2504 Geodesia
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oai_identifier_str oai:docta.ucm.es:20.500.14352/72552
network_acronym_str ES
network_name_str España
repository_id_str
spelling Imaging the volcanic structures beneath Gran Canaria Island using new gravity dataGonzález Montesinos, FuensantaArnoso Sampedro, JoséGómez Ortiz, DavidBenavent Merchán, María TeresaBlanco Montenegro, IsabelVélez, EmilioMartín Crespo, TomásGorbatikov, A. V.Stepanova, Marina YuCanary IslandasGravityPotential fieldsInverse problemVolcanoGravity inversionSubsurface structure modelVolcanic islandsGeofísicaGeodesia2507 Geofísica2504 GeodesiaFrom a new gravity data set that covers homogeneously the whole surface of Gran Canaria (Canary Islands, Spain) and marine gravity data in the nearest offshore, we have obtained a Bouguer anomaly gravity map of the island which improves the previous ones. Using these gravity anomalies, we have applied a gravity inversion approach to investigate the structures beneath the surface of Gran Canaria Island and derive a 3D gravity sources model. The geometry of structures with anomalous density values is constrained up to a depth of approximately 20,000 m below the sea level. The interpretation of the density model identified structures related to the different volcanic stages of Gran Canaria. Several deep-rooted high-density structures represent the intrusive bodies emplaced in the early formation of Gran Canaria and the magma plumbing system of the Miocene volcanic edifices. A low-density body in the center of the island may be associated with the syenitic core of the felsic central volcanic edifice (Tejeda Caldera). Shallow low-density structures identified fractures which acted as feeder dikes of monogenetic volcanoes during the rejuvenated stage. Finally, the NW-SE rift, which is the most important volcano-tectonic structure of Gran Canaria, has a characteristic gravimetric signature and represents a long-lived extensional fracture zone that has controlled the volcanic activity at least since the Miocene.WileyUniversidad Complutense de Madrid20222022-01-0120222022-01-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/72552reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Atribución-NoComercial-SinDerivadas 3.0 Españahttps://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/725522026-06-02T12:44:21Z
dc.title.none.fl_str_mv Imaging the volcanic structures beneath Gran Canaria Island using new gravity data
title Imaging the volcanic structures beneath Gran Canaria Island using new gravity data
spellingShingle Imaging the volcanic structures beneath Gran Canaria Island using new gravity data
González Montesinos, Fuensanta
Canary Islandas
Gravity
Potential fields
Inverse problem
Volcano
Gravity inversion
Subsurface structure model
Volcanic islands
Geofísica
Geodesia
2507 Geofísica
2504 Geodesia
title_short Imaging the volcanic structures beneath Gran Canaria Island using new gravity data
title_full Imaging the volcanic structures beneath Gran Canaria Island using new gravity data
title_fullStr Imaging the volcanic structures beneath Gran Canaria Island using new gravity data
title_full_unstemmed Imaging the volcanic structures beneath Gran Canaria Island using new gravity data
title_sort Imaging the volcanic structures beneath Gran Canaria Island using new gravity data
dc.creator.none.fl_str_mv González Montesinos, Fuensanta
Arnoso Sampedro, José
Gómez Ortiz, David
Benavent Merchán, María Teresa
Blanco Montenegro, Isabel
Vélez, Emilio
Martín Crespo, Tomás
Gorbatikov, A. V.
Stepanova, Marina Yu
author González Montesinos, Fuensanta
author_facet González Montesinos, Fuensanta
Arnoso Sampedro, José
Gómez Ortiz, David
Benavent Merchán, María Teresa
Blanco Montenegro, Isabel
Vélez, Emilio
Martín Crespo, Tomás
Gorbatikov, A. V.
Stepanova, Marina Yu
author_role author
author2 Arnoso Sampedro, José
Gómez Ortiz, David
Benavent Merchán, María Teresa
Blanco Montenegro, Isabel
Vélez, Emilio
Martín Crespo, Tomás
Gorbatikov, A. V.
Stepanova, Marina Yu
author2_role author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv Canary Islandas
Gravity
Potential fields
Inverse problem
Volcano
Gravity inversion
Subsurface structure model
Volcanic islands
Geofísica
Geodesia
2507 Geofísica
2504 Geodesia
topic Canary Islandas
Gravity
Potential fields
Inverse problem
Volcano
Gravity inversion
Subsurface structure model
Volcanic islands
Geofísica
Geodesia
2507 Geofísica
2504 Geodesia
description From a new gravity data set that covers homogeneously the whole surface of Gran Canaria (Canary Islands, Spain) and marine gravity data in the nearest offshore, we have obtained a Bouguer anomaly gravity map of the island which improves the previous ones. Using these gravity anomalies, we have applied a gravity inversion approach to investigate the structures beneath the surface of Gran Canaria Island and derive a 3D gravity sources model. The geometry of structures with anomalous density values is constrained up to a depth of approximately 20,000 m below the sea level. The interpretation of the density model identified structures related to the different volcanic stages of Gran Canaria. Several deep-rooted high-density structures represent the intrusive bodies emplaced in the early formation of Gran Canaria and the magma plumbing system of the Miocene volcanic edifices. A low-density body in the center of the island may be associated with the syenitic core of the felsic central volcanic edifice (Tejeda Caldera). Shallow low-density structures identified fractures which acted as feeder dikes of monogenetic volcanoes during the rejuvenated stage. Finally, the NW-SE rift, which is the most important volcano-tectonic structure of Gran Canaria, has a characteristic gravimetric signature and represents a long-lived extensional fracture zone that has controlled the volcanic activity at least since the Miocene.
publishDate 2022
dc.date.none.fl_str_mv 2022
2022-01-01
2022
2022-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/72552
url https://hdl.handle.net/20.500.14352/72552
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución-NoComercial-SinDerivadas 3.0 España
https://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución-NoComercial-SinDerivadas 3.0 España
https://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Wiley
publisher.none.fl_str_mv Wiley
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869405395300122624
score 15,300724

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