Holocene hydroclimate variability along the Southern Patagonian margin (Chile) reconstructed from Cueva Chica speleothems

Nehme, Carole; Todisco, Dominique; Breitenbach, Sebastian F. M.; Couchoud, Isabelle; Marchegiano, Marta; Peral, Marion; Vonhof, Hubert; Hellström, John; Tjallingi, Rik; Claeys, Philippe; Borrero, Louis; Martin, Fabiana

doi:10.1016/j.gloplacha.2023.104050

Cited by 6 publications

(4 citation statements)

References 114 publications

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“…BP, soit l'âge le plus récent issu la couche de coprolithes (Delibrias et al, 1964). De manière concordante, la base de la coulée stalagmitique de la Cueva Chica, récemment datée par la méthode de l'U-Th par Nehme et al (2023), a livré un âge similaire de 11,1 ± 1,0 ka, indiquant l'âge minimal de la fonte du pergélisol dans cette grotte.…”

Section: Implications Paléoenvironnementalesunclassified

“…La datation des surfaces d'exposition des blocs erratiques par 10 Be cosmogénique produit in situ recule d'environ 15 ka l'âge de la déglaciation du Cerro Benítez, précédemment estimée à 17,3-18,2 ka cal. BP d'après l'âge des plus anciens dépôts lacustres datés à Vega Benítez (Sagredo et al, 2011 ;Stern et al, 2011 ;Villavicencio et al, 2016 ;Todisco et al, 2018 ;McCulloch et al, 2021 ;Nehme et al, 2023). La (Çiner et al, 2022).…”

Section: Implications Paléoenvironnementalesunclassified

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Geomorphology and sedimentology of the Cerro Benítez of the cavities (Patagonia, Chile): genesis and evolution of a megafauna sedimentary trap during the last glaciation

Girault

2022

quaternaire

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Je remercie mon directeur Damase Mouralis, ma co-directrice Fabiana Martin, ainsi que mon coencadrant Dominique Todisco d'avoir accepté de me confier ce sujet de thèse, d'avoir supervisé mon travail avec la plus grande bienveillance et d'avoir relu en détail ce manuscrit. Je remercie Luis Borrero (université de Buenos Aires), Attila Çiner, Mehmet Akif Sarıkaya et Cengiz Yıldırım (université technique d'Istanbul), Amélie Quiquerez (université de Bourgogne) et Philippe Grandjean (université de Lyon 1) pour leur indispensable contribution scientifique.Je remercie les autres membres du laboratoire IDEES (université de Rouen), et notamment Raphaël

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Section: Implications Paléoenvironnementalesunclassified

Geomorphology and sedimentology of the Cerro Benítez of the cavities (Patagonia, Chile): genesis and evolution of a megafauna sedimentary trap during the last glaciation

Girault

2022

quaternaire

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“…In terrestrial environments, the ∆ 47 paleothermometer has mainly been applied on paleosol (e.g., Kelson et al., 2020; Passey et al., 2010; Quade et al., 2013) and speleothems (e.g., Affek et al., 2008; Daëron et al., 2011; Fernandez et al., 2023; Kluge & Affek, 2012; Nehme et al., 2023). In lacustrine records, the ∆ 47 technique was used on inorganic carbonates (e.g., Hudson et al., 2017; Huntington et al., 2010; Katz et al., 2023) and molluscs (e.g., Dong et al., 2021; Grauel et al., 2016; Tobin et al., 2014; Wang et al., 2016; Zaarur et al., 2011) and was only recently applied to ostracods to reconstruct paleoaltitude and paleoclimate (Marchegiano et al., 2024; Song et al., 2022; Yue et al., 2022).…”

Section: Introductionmentioning

confidence: 99%

The Ostracod Clumped‐Isotope Thermometer: A Novel Tool to Accurately Quantify Continental Climate Changes

Marchegiano,

Peral,

Venderickx

et al. 2024

Geophysical Research Letters

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This study presents a methodological advancement in the field of clumped‐isotope (∆47) thermometry, specifically tailored for application to freshwater ostracods. The novel ostracod clumped isotope approach enables quantitative temperature and hydrological reconstruction in lacustrine records. The relationship between ∆47 and the temperature at which ostracod shell mineralized is determined by measuring ∆47 on different species grown under controlled temperatures, ranging from 4 ± 0.8 to 23 ± 0.5ºC. The excellent agreement between the presented ∆47 ostracod data and the monitored temperatures confirms that ∆47 can be applied to ostracod shells and that a vital effect is absent outside the uncertainty of measurements. Results are consistent with the carbonate clumped‐isotope unified calibration (Anderson et al., 2021, https://doi.org/10.1029/2020gl092069), therefore, an ostracod‐specific calibration is not needed. The ostracod clumped‐isotope thermometer represents a powerful tool for terrestrial paleoclimate studies all around the world, as lakes and ostracods are found in all climatic belts.

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“…The carbonate clumped-isotope method (47) constitutes an alternative thermometer, independent of the  18 Ow. However, kinetic effects often affect speleothems leading to isotopic disequilibrium and overestimated temperatures (Affek et al, 2008(Affek et al, , 2014Daëron et al, 2011;Kluge et al, 2013;Matthews et al, 2021;Nehme et al, 2023). Nevertheless, speleothems that precipitate close to isotopic equilibrium retain the original clumped isotope signal, allowing precise reconstruction of paleo-temperature variations in caves .…”

Section: Introductionmentioning

confidence: 99%

A new insight of the MIS 3 Dansgaard-Oeschger climate oscillations in western Europe from the study of a Belgium isotopically equilibrated speleothem

Peral,

Marchegiano,

Verheyden

et al. 2024

Preprint

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The Marine Isotope Stage (MIS) 3 records abrupt transitions from cold stadial to temperate interstadial climate conditions, termed Dansgaard-Oeschger (DO) events. Reconstructing these rapid climate changes is crucial for documenting the prevailing climatic conditions in Europe. However, only few continental records are available to define the continental climatic responses to DO changes. Here, the elemental and stable isotope compositions of a flowstone speleothem in Belgium covering the MIS 3 are documented. This speleothem precipitated under equilibrium conditions based on Δ48 thermometry, allowing the use of Δ47 thermometry with confidence. The acquired unique thermometry paleoclimatic dataset enables the reconstruction of temperature based on the hydrological information (oxygen-18 of drip water; δ18Ow) and sheds new light on the DO climate variations. A temperature differential of ~7°C is associated with alternating temperate warm and wet Interstadials to cold and dry stadials. The DO-12 is the most pronounced MIS 3 interstadial in the record and appears to be marked by a delay of 1000 years between climate enhancement (warmer temperature) and water availability (moisture increase). By combining our speleothem record with other continental and marine archive, the spatial variability of DO changes in western Europe during the MIS 3 is defined. A gradual climate deterioration with colder and drier conditions, associated with the Heinrich 4 event, progressed southwards through Europe. Interestngly, this spatial climatic degradation occured during the last phase of Neanderthal populations occupation in Europe. Our data provides better understanding on proxy interpretation thanks to our clumped isotope measurement but also on environmental constraints for human mobility models.

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Holocene hydroclimate variability along the Southern Patagonian margin (Chile) reconstructed from Cueva Chica speleothems

Cited by 6 publications

References 114 publications

Geomorphology and sedimentology of the Cerro Benítez of the cavities (Patagonia, Chile): genesis and evolution of a megafauna sedimentary trap during the last glaciation

Geomorphology and sedimentology of the Cerro Benítez of the cavities (Patagonia, Chile): genesis and evolution of a megafauna sedimentary trap during the last glaciation

The Ostracod Clumped‐Isotope Thermometer: A Novel Tool to Accurately Quantify Continental Climate Changes

A new insight of the MIS 3 Dansgaard-Oeschger climate oscillations in western Europe from the study of a Belgium isotopically equilibrated speleothem

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