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

• Published in: Quaternary Science Reviews
• Main Authors: Wulf, Sabine, Namik Çağatay, M, Appelt, Oona, Kadir Eriş, K, Henry, Pierre
• Other Authors: Portmouth University, Istanbul Technical University (ITÜ), German Research Centre for Geosciences - Helmholtz-Centre Potsdam (GFZ), Centre Européen de Recherche et d'Enseignement des Géosciences de l'Environnement (CEREGE), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), ANR-10-LABX-0019,LabexMER,LabexMER Marine Excellence Research: a changing ocean(2010), European Project: 308417,EC:FP7:ENV,FP7-ENV-2012-two-stage,MARSITE(2012)
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2021
• Subjects: Cryptotephra; Upper Nisyros Pumice; Sea of Marmara; Eastern Mediterranean; [SDU.STU.ST]Sciences of the Universe [physics]/Earth Sciences/Stratigraphy; [SDU.STU]Sciences of the Universe [physics]/Earth Sciences; Greenland; Kos
• Online Access: https://hal.science/hal-03462656; https://hal.science/hal-03462656/document; https://hal.science/hal-03462656/file/Manuscript%20Wulf%20et%20al%20Marmara-revised.pdf; https://doi.org/10.1016/j.quascirev.2021.107285

International audience The rhyolitic Upper Nisyros Pumice (UNP) from the Kos-Yali-Nisyros volcanic system has been detected as a cryptotephra layer in lacustrine sediments from the Sea of Marmara (SoM). A new independent age of the UNP eruption at 57.1 ± 1.5 cal ka BP has been interpolated using a combination of radiocarbon dating, tephrochronology and wiggle-matching of the SoM proxy record (Ca-curves) with Greenland oxygen isotope data, therewith confirming recently published radioisotopic dates of UNP land deposits. The UNP tephra in the SoM was identified by comparisons of the SoM tephra glass chemical dataset with published data of other marine tephra records from the Aegean Sea and the Megali Limni lacustrine sediment sequence (Lesvos Island). The stratigraphic position of the UNP tephra in these records verified its deposition in the SoM at the onset of MIS-3 and specifically at the termination of Greenland Interstadial GI-16. The new findings define the UNP tephra as a valuable time marker for the synchronisation of palaeoenvironmental data for this time period and help spurring the establishment of a robust tephrostratigraphical framework for the last ~70 kyr in the Aegean-Black Sea region.