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Assessment of prospective geological hazards in Torrevieja-La Mata coast (western Mediterranean) based on Pleistocene and Holocene events

dc.contributor.authorTorres, Trinidad
dc.contributor.authorOrtiz, José E.
dc.contributor.authorMediavilla López, Rosa María
dc.contributor.authorSánchez-Palencia, Yolanda
dc.contributor.authorSantisteban Navarro, Juan Ignacio
dc.contributor.authorVega Panizo, Rogelio
dc.date.accessioned2023-06-16T14:20:17Z
dc.date.available2023-06-16T14:20:17Z
dc.date.issued2021-12-15
dc.description.abstractThe coastal zone in which the lagoons of La Mata and Torrevieja (Eastern Spain) developed can be described as a compilation of geo-hazards typical of the Mediterranean realm. This study has focused mainly on those linked to recent tectonics. Extensive use of the amino acid racemization dating method allowed us to establish the evolution of all the geomorphological units differentiated in the area, the most striking manifestation being at the La Mata Lagoon Bar, where MIS 5 deposits settled on MIS 7 sediments along a marked erosive unconformity, thereby attesting coastal uplift between these two stages. In addition, recent uplift processes were reflected on stepped abrasion platforms and, in some cases, enormous boulders were transported over these platforms by extreme surge waves. Furthermore, we obtained feasible evidence that, during the end of MIS 5, an earthquake with an offshore epicenter linked to Torrevieja Fault, Bajo Segura Fault or the set of faults linked to the former, was responsible for tsunami surge deposits represented in accumulations of randomly arranged and well-preserved Glycymeris and Acanthocardia shells. Recent catastrophic effects linked to the earthquakes were also detected. In this regard, comparison of the paleontological and taphonomic analyses allowed us to discern between wave and tsunami surge deposits. Therefore, evidence of these hazards undoubtedly points to important future (and present) erosive and/or catastrophic processes, which are enhanced by the presence of tourist resorts and salt-mining industry. Thus, these sites are also threatened by future increases in sea level in the context of warmer episodes, attested by raised marine fossil deposits. At the north of Cervera Cape, beaches will be eroded, without any possibility of sediment input from the starved Segura River delta. At the south of this cape, waves (and tsunamis) will erode the soft rocks that built up the cliff, creating deep basal notches.
dc.description.departmentDepto. de Geodinámica, Estratigrafía y Paleontología
dc.description.facultyFac. de Ciencias Geológicas
dc.description.refereedTRUE
dc.description.sponsorshipMinisterio de Ciencia e Innovación (MICINN)
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/70666
dc.identifier.doi10.1007/s11069-021-05155-0
dc.identifier.issn1561-8633
dc.identifier.officialurlhttps://doi.org/10.1007/s11069-021-05155-0
dc.identifier.urihttps://hdl.handle.net/20.500.14352/4733
dc.journal.titleNatural hazards and earth system sciences
dc.language.isoeng
dc.publisherSpringer Nature
dc.relation.projectIDHAR2017-85726-C2-2-P
dc.rightsAtribución 3.0 España
dc.rights.accessRightsopen access
dc.rights.urihttps://creativecommons.org/licenses/by/3.0/es/
dc.subject.cdu551.79(460.315)
dc.subject.cdu55:504(460.315)
dc.subject.keywordRecent tectonics
dc.subject.keywordCoastal hazards
dc.subject.keywordAmino acid racemization
dc.subject.keywordGlycymeris
dc.subject.keywordMediterranean
dc.subject.ucmGeodinámica
dc.subject.unesco2507 Geofísica
dc.titleAssessment of prospective geological hazards in Torrevieja-La Mata coast (western Mediterranean) based on Pleistocene and Holocene events
dc.typejournal article
dspace.entity.typePublication
relation.isAuthorOfPublicationc83ed60c-056b-4da6-91a0-01121fce5299
relation.isAuthorOfPublication.latestForDiscoveryc83ed60c-056b-4da6-91a0-01121fce5299

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