Model of Pleistocene geomorphological evolution in active Alpine neotectonics controlled margins in the western Mediterranean area: The case of SE Iberian Peninsula

At the northern tip of the Betic realm (SE Iberian Peninsula), some troughs (synclines) and elevations (anticlines) alternate, marking the present-day coastal lobed morphology of cape-bounded bays, where subsidence and uplift conditions prevailed, respectively. In this study, we were able to establi...

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Autores: Torres, Trinidad, Ortiz Menéndez, José Eugenio, Mediavilla, Rosa, Santisteban Navarro, Juan Ignacio, Blázquez, Ana, Sierro, Francisco Javier, Sánchez-Palencia, Yolanda, ópez Cilla, Ignacio, Vega, Rogelio de la
Tipo de recurso: artículo
Fecha de publicación:2024
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/102551
Acceso en línea:https://hdl.handle.net/20.500.14352/102551
Access Level:acceso abierto
Palabra clave:551.435.3“624/627”
Pleistocene
Borehole
Marine geophysics
Paleoenvironmental analysis
AAR
Raised marine deposits
Geología estratigráfica
Geodinámica
2506.19 Estratigrafía
2506.07 Geomorfología
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spelling Model of Pleistocene geomorphological evolution in active Alpine neotectonics controlled margins in the western Mediterranean area: The case of SE Iberian PeninsulaTorres, TrinidadOrtiz Menéndez, José EugenioMediavilla, RosaSantisteban Navarro, Juan IgnacioBlázquez, AnaSierro, Francisco JavierSánchez-Palencia, Yolandaópez Cilla, IgnacioVega, Rogelio de la551.435.3“624/627”PleistoceneBoreholeMarine geophysicsPaleoenvironmental analysisAARRaised marine depositsGeología estratigráficaGeodinámica2506.19 Estratigrafía2506.07 GeomorfologíaAt the northern tip of the Betic realm (SE Iberian Peninsula), some troughs (synclines) and elevations (anticlines) alternate, marking the present-day coastal lobed morphology of cape-bounded bays, where subsidence and uplift conditions prevailed, respectively. In this study, we were able to establish a clear coastal evolution. To this end, we considered the sedimentological and palaeoenvironmental conditions, the palaeogeographical reconstruction, and recent tectonics until Middle Pleistocene times (MIS 5) through the interpretation of onshore cores, raised marine deposits and geophysical profiles. In this regard, as reflected by both onshore and offshore information, there seems to be a stratigraphical gap from the end of the Pliocene to MIS 15 (Middle Pleistocene). In areas under uplift conditions, linked to tardive Alpine tectonics, the deposits of ancient shorelines and raised beaches were located at different post-depositional elevations, which were dated from odd MIS 15 to MIS 5 using amino acid racemization. Only deposits aged MIS 7 and MIS 5 are roughly at the present-day sea level or some meters above. In the troughs, which remain mostly as lagoons and salt marshes, subsidence did not allow the sedimentary record to be discerned. However, many borehole cores were recovered, attesting lagoonal, marsh, sabkha, or alluvial environmental conditions, which were usually unconnected from the sea. Micropaleontological and amino acid racemization dating revealed these cores to be of MIS15 to MIS5 age. Offshore seismic research revealed five erosive-bounded deposits that are stacked accretionary prisms corresponding to highstands between odd MIS 15 and MIS 5. In contrast, even MISs can be correlated to the erosive horizons that separated the seismic units, reflecting lowstands. In this regard, some bars, at a range of distances from the present-day coastline, protected wetlands from marine influence, allowing the development of diverse sub-environments under changing paleogeographical and paleoclimatological conditions.ElsevierUniversidad Complutense de Madrid20242024-04-0120242024-04-01journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/102551reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/1025512026-06-02T12:44:21Z
dc.title.none.fl_str_mv Model of Pleistocene geomorphological evolution in active Alpine neotectonics controlled margins in the western Mediterranean area: The case of SE Iberian Peninsula
title Model of Pleistocene geomorphological evolution in active Alpine neotectonics controlled margins in the western Mediterranean area: The case of SE Iberian Peninsula
spellingShingle Model of Pleistocene geomorphological evolution in active Alpine neotectonics controlled margins in the western Mediterranean area: The case of SE Iberian Peninsula
Torres, Trinidad
551.435.3“624/627”
Pleistocene
Borehole
Marine geophysics
Paleoenvironmental analysis
AAR
Raised marine deposits
Geología estratigráfica
Geodinámica
2506.19 Estratigrafía
2506.07 Geomorfología
title_short Model of Pleistocene geomorphological evolution in active Alpine neotectonics controlled margins in the western Mediterranean area: The case of SE Iberian Peninsula
title_full Model of Pleistocene geomorphological evolution in active Alpine neotectonics controlled margins in the western Mediterranean area: The case of SE Iberian Peninsula
title_fullStr Model of Pleistocene geomorphological evolution in active Alpine neotectonics controlled margins in the western Mediterranean area: The case of SE Iberian Peninsula
title_full_unstemmed Model of Pleistocene geomorphological evolution in active Alpine neotectonics controlled margins in the western Mediterranean area: The case of SE Iberian Peninsula
title_sort Model of Pleistocene geomorphological evolution in active Alpine neotectonics controlled margins in the western Mediterranean area: The case of SE Iberian Peninsula
dc.creator.none.fl_str_mv Torres, Trinidad
Ortiz Menéndez, José Eugenio
Mediavilla, Rosa
Santisteban Navarro, Juan Ignacio
Blázquez, Ana
Sierro, Francisco Javier
Sánchez-Palencia, Yolanda
ópez Cilla, Ignacio
Vega, Rogelio de la
author Torres, Trinidad
author_facet Torres, Trinidad
Ortiz Menéndez, José Eugenio
Mediavilla, Rosa
Santisteban Navarro, Juan Ignacio
Blázquez, Ana
Sierro, Francisco Javier
Sánchez-Palencia, Yolanda
ópez Cilla, Ignacio
Vega, Rogelio de la
author_role author
author2 Ortiz Menéndez, José Eugenio
Mediavilla, Rosa
Santisteban Navarro, Juan Ignacio
Blázquez, Ana
Sierro, Francisco Javier
Sánchez-Palencia, Yolanda
ópez Cilla, Ignacio
Vega, Rogelio de la
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 551.435.3“624/627”
Pleistocene
Borehole
Marine geophysics
Paleoenvironmental analysis
AAR
Raised marine deposits
Geología estratigráfica
Geodinámica
2506.19 Estratigrafía
2506.07 Geomorfología
topic 551.435.3“624/627”
Pleistocene
Borehole
Marine geophysics
Paleoenvironmental analysis
AAR
Raised marine deposits
Geología estratigráfica
Geodinámica
2506.19 Estratigrafía
2506.07 Geomorfología
description At the northern tip of the Betic realm (SE Iberian Peninsula), some troughs (synclines) and elevations (anticlines) alternate, marking the present-day coastal lobed morphology of cape-bounded bays, where subsidence and uplift conditions prevailed, respectively. In this study, we were able to establish a clear coastal evolution. To this end, we considered the sedimentological and palaeoenvironmental conditions, the palaeogeographical reconstruction, and recent tectonics until Middle Pleistocene times (MIS 5) through the interpretation of onshore cores, raised marine deposits and geophysical profiles. In this regard, as reflected by both onshore and offshore information, there seems to be a stratigraphical gap from the end of the Pliocene to MIS 15 (Middle Pleistocene). In areas under uplift conditions, linked to tardive Alpine tectonics, the deposits of ancient shorelines and raised beaches were located at different post-depositional elevations, which were dated from odd MIS 15 to MIS 5 using amino acid racemization. Only deposits aged MIS 7 and MIS 5 are roughly at the present-day sea level or some meters above. In the troughs, which remain mostly as lagoons and salt marshes, subsidence did not allow the sedimentary record to be discerned. However, many borehole cores were recovered, attesting lagoonal, marsh, sabkha, or alluvial environmental conditions, which were usually unconnected from the sea. Micropaleontological and amino acid racemization dating revealed these cores to be of MIS15 to MIS5 age. Offshore seismic research revealed five erosive-bounded deposits that are stacked accretionary prisms corresponding to highstands between odd MIS 15 and MIS 5. In contrast, even MISs can be correlated to the erosive horizons that separated the seismic units, reflecting lowstands. In this regard, some bars, at a range of distances from the present-day coastline, protected wetlands from marine influence, allowing the development of diverse sub-environments under changing paleogeographical and paleoclimatological conditions.
publishDate 2024
dc.date.none.fl_str_mv 2024
2024-04-01
2024
2024-04-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/102551
url https://hdl.handle.net/20.500.14352/102551
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
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
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
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
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
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score 15,301603

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