An end to the Last Interglacial highstand before 120 ka: Relative sea-level evidence from Infreschi Cave (Southern Italy)

Autor: Monica Bini, Isabelle Couchoud, John Hellstrom, Paolo Stocchi, Lorenzo Monaco, Andrea Ratti, Matteo Vacchi, Giovanni Zanchetta, Lucia Sarti, Russell N. Drysdale, Biagio Giaccio, Fabio Martini
Přispěvatelé: Dipartimento di Scienze della Terra [Pisa], University of Pisa - Università di Pisa, Istituto Nazionale di Geofisica e Vulcanologia - Sezione di Roma (INGV), Istituto Nazionale di Geofisica e Vulcanologia, Istituto di Geologia Ambientale e Geoingegneria, CNR, Rome, Italy, Consiglio Nazionale delle Ricerche [Roma] (CNR), School of Geography [Melbourne], Faculty of Science [Melbourne], University of Melbourne-University of Melbourne, School of Earth Sciences [Melbourne], Environnements, Dynamiques et Territoires de la Montagne (EDYTEM), Centre National de la Recherche Scientifique (CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry]), Dipartimento di Scienze della Terra, Università di Roma La Sapienza, Rome, Italy, Dipartimento di Scienze della Terra, Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome]-Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome]
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Marine isotope stage
010506 paleontology
Archeology
010504 meteorology & atmospheric sciences
[SDE.MCG]Environmental Sciences/Global Changes
Middle palaeolithic
Speleothem
MIS-5e
01 natural sciences
Paleontology
[SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry
Deglaciation
Highstand
Glacial period
Solid earth geophysical models
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces
environment
U/Th dating
Ecology
Evolution
Behavior and Systematics
Sea level
ComputingMilieux_MISCELLANEOUS
0105 earth and related environmental sciences
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean
Atmosphere
Global and Planetary Change
geography
geography.geographical_feature_category
Geology
Last glacial inception
Relative sea level
Southern Italy
13. Climate action
[SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology
Interglacial
Ice sheet
Chronology
Zdroj: Quaternary Science Reviews
Quaternary Science Reviews, Elsevier, 2020, 250, pp.106658. ⟨10.1016/j.quascirev.2020.106658⟩
Quaternary science reviews 250 (2020). doi:10.1016/j.quascirev.2020.106658
info:cnr-pdr/source/autori:Bini, Monica; Zanchetta, Giovanni; Drysdale, Russell N.; Giaccio, Biagio; Stocchi, Paolo; Vacchi, Matteo; Hellstrom, John C.; Couchoud, Isabelle; Monaco, Lorenzo; Ratti, Andrea; Martini, Fabio; Sarti, Lucia/titolo:An end to the Last Interglacial highstand before 120 ka: Relative sea-level evidence from Infreschi Cave (Southern Italy)/doi:10.1016%2Fj.quascirev.2020.106658/rivista:Quaternary science reviews/anno:2020/pagina_da:/pagina_a:/intervallo_pagine:/volume:250
ISSN: 0277-3791
DOI: 10.1016/j.quascirev.2020.106658⟩
Popis: The timing, duration and evolution of sea level during the Marine Isotope Stage 5e (MIS 5e) highstand is a subject of intense debate. A major problem in resolving this debate is the difficulty of chronologically constraining the sea level fall that followed the peak of the highstand. This was mainly controlled by ice-sheet dynamics, the understanding of which is relevant for assessing future sea-level behavior due to global warming. Here we use stratigraphical and geochoronological (U/Th dating and tephra fingerprinting) evidence from the Infreschi archaeological cave (Marina di Camerota, Southern Italy) to constrain relative sea level (RSL) evolution during the MIS 5e highstand and younger stages. Uranium-thorium dating of speleothem deposition phases places the maximum highstand RSL at 8.90 ± 0.6m a.s.l., as indicated by the near-horizontal upper limit of Lithophaga boreholes measured for along a ∼3.5 km coastal cliff section. Geochronological data show that RSL fell more than 6 m before ∼120 ka, suggesting a duration of the Last Interglacial highstand significantly shorter than proposed in some previous studies. Modelling shows that the RSL trend predicted by the ICE-5G and ICE-6G ice-sheet simulations is consistent with our data, but requires an additional significant reduction of both Greenland and Antarctic ice sheets to match the height of the local maximum highstand if no correction for tectonics is applied. Reconciling field data and models requires an earlier and likely shorter duration of the MIS 5e highstand. This suggests that our new data can constrain global ice-volume variations during the penultimate deglaciation, as well as glacial inception at the end of the Last Interglacial. According to our chronology, there is no local evidence of higher-than-present-day sea levels after 120 ka.
Databáze: OpenAIRE
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