000153006 001__ 153006
000153006 005__ 20251017144616.0
000153006 0247_ $$2doi$$a10.1016/j.palaeo.2025.112880
000153006 0248_ $$2sideral$$a143481
000153006 037__ $$aART-2025-143481
000153006 041__ $$aeng
000153006 100__ $$0(orcid)0000-0002-4212-0524$$aArenas, C.$$uUniversidad de Zaragoza
000153006 245__ $$aOn land record of the Oligocene–Miocene transition. Climatic insights from a multiproxy study on a lacustrine system in the Ebro Basin (NE Iberia, SW Europe)
000153006 260__ $$c2025
000153006 5203_ $$aThe Oligocene–Miocene Transition is associated with climatic changes primarily related to Antarctic phenomena (Mi-1 glacial event), the effects of which are not well known on land. This work examines a continuous, well dated distal-alluvial and carbonate lacustrine and palustrine succession (23.56 to 22.1 Ma) in the Ebro Basin, through sedimentological analysis and carbonate δ13C and δ18O composition, to unveil climate-related variations and compare them with those in other terrestrial and marine Mi-1 records. Results indicate carbonate deposition in freshwater bodies having moderate-to-high plant-derived CO2 supply and being affected by lake-level variations and evaporative processes (causing Mg carbonates precipitation in the Oligocene alluvial and saline mud flats), within a closed-lake environment. A significant decline in temperature and humidity centered around 23.16–23.14 Ma seems to correlate with Mi-1, but with earlier onset and earlier minimum temperature and humidity (minima ca 80–90 ka before) in the lake system. Low temperature and humidity are followed by oscillating but overall increasing humidity, varying Precipitation/Evaporation and slight warming until 23.1 Ma, coinciding with the development of mainly lacustrine and palustrine environments from ca 23.15 Ma onwards. Two falls in δ18O that concur with opposed δ13C trends, representing dissimilar climatic conditions, appear to match different long-term orbital configurations. The earlier response of the Ebro Basin-lake system to global changes, e.g. the Mi-1 event, is consistent with results from other continental records, and implies the sensitivity of lake systems to record initial stages of ongoing global changes, and the more lagging responses of marine systems to continental 12CO2-input variations.
000153006 536__ $$9info:eu-repo/grantAgreement/ES/MICINN-AEI/PID2019-106440GB-C21$$9nfo:eu-repo/grantAgreement/ES/MICINN-AEI/PID2019-106440GB-C22
000153006 540__ $$9info:eu-repo/semantics/closedAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/
000153006 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000153006 700__ $$aCabrera, L.
000153006 700__ $$0(orcid)0000-0002-5246-366X$$aOsácar, M.C.$$uUniversidad de Zaragoza
000153006 700__ $$0(orcid)0000-0002-1802-2115$$aPérez-Rivarés, F.J.
000153006 700__ $$aValero, L.
000153006 700__ $$aBastida, J.
000153006 7102_ $$12000$$2280$$aUniversidad de Zaragoza$$bDpto. Ciencias de la Tierra$$cÁrea Estratigrafía
000153006 7102_ $$12000$$2120$$aUniversidad de Zaragoza$$bDpto. Ciencias de la Tierra$$cÁrea Cristalografía Mineralog.
000153006 773__ $$g668 (2025), 112880 [22 pp.]$$pPalaeogeogr. palaeoclimatol. palaeoecol.$$tPALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY$$x0031-0182
000153006 8564_ $$s1397978$$uhttps://zaguan.unizar.es/record/153006/files/texto_completo.pdf$$yVersión publicada
000153006 8564_ $$s2581083$$uhttps://zaguan.unizar.es/record/153006/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000153006 909CO $$ooai:zaguan.unizar.es:153006$$particulos$$pdriver
000153006 951__ $$a2025-10-17-14:19:35
000153006 980__ $$aARTICLE