Defining the Upper Nisyros Pumice (57.1 ± 1.5 ka) as new tephra isochrone for linking early MIS-3 palaeoenvironmental records in the Aegean-Black Sea gateway: New evidence from the Sea of Marmara

Wulf, Sabine; Ćaǧatay, M. Namık; Appelt, Oona; Eriş, Kürşad Kadir; Henry, Pierre

doi:10.1016/j.quascirev.2021.107285

Cited by 7 publications

(3 citation statements)

References 56 publications

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“…Hence, the eruption ages (youngest ilmenite population) determined for the Lower and Upper Pumice units of Nisyros are 66.3 AE 5.7 ka (1s) and 61.2 AE 4.4 ka (1s), respectively. These correspond within uncertainty with the U-Th zircon ages of the units of 63.1 AE 4.7 ka (1s) for the Lower Pumice and 58.4 AE 2.7 ka (1s) for the Upper Pumice provided by Popa et al (2020a), and 57.1 AE 1.5 ka resulted from sediment chronology for the Upper Pumice unit by Wulf et al (2021) (Figure 5).…”

Section: Nisyros Volcano Datasupporting

confidence: 77%

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In Situ²³⁰Th/²³⁸UGeochronology of Young Volcanic Rocks on Inclusion‐Bearing Ilmenite

Keller

Guillong

Popa

2022

Geostandard Geoanalytic Res

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Precise age determinations of volcanic deposits from the Late Pleistocene and Holocene are fundamental for hazard assessment. Retrieving accurate radiogenic ages typically relies on analysing specific minerals (such as zircon or sanidine), which are in many cases lacking in the deposits. We present a new 230Th‐238U disequilibrium dating method by LA‐ICP‐MS for inclusion‐bearing ilmenite, and discuss its details and challenges. The technique is tested on ilmenites from the 86.4 ± 1.1 ka Aso‐4 super‐eruption, Japan, and from the Lower Pumice (63.1 ± 4.7 ka) and Upper Pumice (58.4 ± 2.7 ka) eruptions of Nisyros volcano, Greece. Ilmenites of the Aso‐4 eruption produce well‐defined global isochrons yielding ilmenite crystallisation ages of 89 ± 10 ka (2s) and 81 ± 15 ka (2s). Two‐point isochron model ages from the Nisyros eruptions produce youngest population ages of 66.3 ± 5.7 ka (1s) for the Lower Pumice and 61.2 ± 4.4 ka (1s) for the Upper Pumice. The age determinations obtained during this study are compatible with data reported from conventional techniques. These results demonstrate the applicability of this new method to date young volcanic deposits in a quick, reproducible way, and without relying on zircon or K‐bearing phases.

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Section: Nisyros Volcano Datasupporting

confidence: 77%

“…(2020a), and 57.1 ± 1.5 ka resulted from sediment chronology for the Upper Pumice unit by Wulf et al . (2021) (Figure 5).…”

Section: Resultsmentioning

confidence: 99%

In Situ²³⁰Th/²³⁸UGeochronology of Young Volcanic Rocks on Inclusion‐Bearing Ilmenite

Keller

Guillong

Popa

2022

Geostandard Geoanalytic Res

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“…In Southern-Europe, along the Italian Peninsula (Monticchio, Castiglione, and Lagaccione, Italy) 6 – 8 and in Mediterranean lowlands (Tenaghi Philippon and Megali Limni, Greece) 9 – 11 , temperate forests and forest-steppe were supported during Greenland Interstadials (GI), with steppe expansion during Greenland Stadials (GS), further exacerbated during HS 12 , 13 . Less extensive forest patches occurred in mountain areas during GSs (e.g., Ioannina, western Greece) 14 , where temperate tree population survival was favoured by orographic precipitation throughout MIS 3.…”

Section: Introductionmentioning

confidence: 99%

High-resolution ecosystem changes pacing the millennial climate variability at the Middle to Upper Palaeolithic transition in NE-Italy

Badino

Pini

Ravazzi

et al. 2023

Sci Rep

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Observation of high-resolution terrestrial palaeoecological series can decipher relationships between past climatic transitions, their effects on ecosystems and wildfire cyclicity. Here we present a new radiocarbon dated record from Lake Fimon (NE-Italy) covering the 60–27 ka interval. Palynological, charcoal fragments and sediment lithology analysis were carried out at centennial to sub-centennial resolutions. Identification of the best modern analogues for MIS 3 ecosystems further enabled to thoroughly reconstruct structural changes in the vegetation through time. This series also represents an “off-site” reference record for chronologically well-constrained Palaeolithic sites documenting Neanderthal and Homo sapiens occupations within the same region. Neanderthals lived in a mosaic of grasslands and woodlands, composed of a mixture of boreal and broad-leaved temperate trees analogous to those of the modern Central-Eastern Europe, the Southern Urals and central-southern Siberia. Dry and other grassland types expanded steadily from 44 to 43 ka and peaked between 42 and 39 ka, i.e., about the same time when Sapiens reached this region. This vegetation, which finds very few reliable modern analogues in the adopted Eurasian calibration set, led to the expansion of ecosystems able to sustain large herds of herbivores. During 39–27 ka, the landscape was covered by steppe, desert-steppe and open dry boreal forests similar to those of the modern Altai-Sayan region. Both Neanderthal and Sapiens lived in contexts of expanded fire-prone ecosystems modulated by the high-frequency climatic cycles of MIS 3.

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Statistically coherent approach involving log-ratio transformation of geochemical data enabled tephra correlations of two late Pleistocene tephra from the eastern Adriatic shelf

Razum

Ilijanić

Petrelli

et al. 2023

Quaternary Geochronology

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Defining the Upper Nisyros Pumice (57.1 ± 1.5 ka) as new tephra isochrone for linking early MIS-3 palaeoenvironmental records in the Aegean-Black Sea gateway: New evidence from the Sea of Marmara

Cited by 7 publications

References 56 publications

In Situ²³⁰Th/²³⁸UGeochronology of Young Volcanic Rocks on Inclusion‐Bearing Ilmenite

In Situ²³⁰Th/²³⁸UGeochronology of Young Volcanic Rocks on Inclusion‐Bearing Ilmenite

High-resolution ecosystem changes pacing the millennial climate variability at the Middle to Upper Palaeolithic transition in NE-Italy

Statistically coherent approach involving log-ratio transformation of geochemical data enabled tephra correlations of two late Pleistocene tephra from the eastern Adriatic shelf

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Defining the Upper Nisyros Pumice (57.1 ± 1.5 ka) as new tephra isochrone for linking early MIS-3 palaeoenvironmental records in the Aegean-Black Sea gateway: New evidence from the Sea of Marmara

Cited by 7 publications

References 56 publications

In Situ230Th/238UGeochronology of Young Volcanic Rocks on Inclusion‐Bearing Ilmenite

In Situ230Th/238UGeochronology of Young Volcanic Rocks on Inclusion‐Bearing Ilmenite

High-resolution ecosystem changes pacing the millennial climate variability at the Middle to Upper Palaeolithic transition in NE-Italy

Statistically coherent approach involving log-ratio transformation of geochemical data enabled tephra correlations of two late Pleistocene tephra from the eastern Adriatic shelf

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In Situ²³⁰Th/²³⁸UGeochronology of Young Volcanic Rocks on Inclusion‐Bearing Ilmenite

In Situ²³⁰Th/²³⁸UGeochronology of Young Volcanic Rocks on Inclusion‐Bearing Ilmenite