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

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dc.contributor.authorTorres, Trinidad
dc.contributor.authorOrtiz Menéndez, José Eugenio
dc.contributor.authorMediavilla, Rosa
dc.contributor.authorSantisteban Navarro, Juan Ignacio
dc.contributor.authorBlázquez, Ana
dc.contributor.authorSierro, Francisco Javier
dc.contributor.authorSánchez-Palencia, Yolanda
dc.contributor.authorópez Cilla, Ignacio
dc.contributor.authorVega, Rogelio de la
dc.date.accessioned2024-04-02T15:24:27Z
dc.date.available2024-04-02T15:24:27Z
dc.date.issued2024-04
dc.description.abstractAt 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.
dc.description.departmentDepto. de Geodinámica, Estratigrafía y Paleontología
dc.description.facultyFac. de Ciencias Geológicas
dc.description.refereedTRUE
dc.description.sponsorshipMCIN/AEI/10.13039/501100011033
dc.description.statuspub
dc.identifier.doi10.1016/j.csr.2024.105198
dc.identifier.essn1873-6955
dc.identifier.issn0278-4343
dc.identifier.officialurlhttps://doi.org/10.1016/j.csr.2024.105198
dc.identifier.relatedurlhttps://www.sciencedirect.com/science/article/pii/S0278434324000281?via%3Dihub
dc.identifier.urihttps://hdl.handle.net/20.500.14352/102551
dc.issue.number105198
dc.journal.titleContinental Shelf Research
dc.language.isoeng
dc.publisherElsevier
dc.relation.projectIDPID2021-123549NB-I00
dc.rightsAttribution 4.0 Internationalen
dc.rights.accessRightsopen access
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subject.cdu551.435.3“624/627”
dc.subject.keywordPleistocene
dc.subject.keywordBorehole
dc.subject.keywordMarine geophysics
dc.subject.keywordPaleoenvironmental analysis
dc.subject.keywordAAR
dc.subject.keywordRaised marine deposits
dc.subject.ucmGeología estratigráfica
dc.subject.ucmGeodinámica
dc.subject.unesco2506.19 Estratigrafía
dc.subject.unesco2506.07 Geomorfología
dc.titleModel of Pleistocene geomorphological evolution in active Alpine neotectonics controlled margins in the western Mediterranean area: The case of SE Iberian Peninsula
dc.typejournal article
dc.type.hasVersionVoR
dc.volume.number275
dspace.entity.typePublication
relation.isAuthorOfPublicationc83ed60c-056b-4da6-91a0-01121fce5299
relation.isAuthorOfPublication.latestForDiscoveryc83ed60c-056b-4da6-91a0-01121fce5299
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