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 S., Çağatay M. N. , Appelt O., Eriş K. K. , Henry P.

QUATERNARY SCIENCE REVIEWS, vol.274, 2021 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 274
  • Publication Date: 2021
  • Doi Number: 10.1016/j.quascirev.2021.107285
  • Title of Journal : QUATERNARY SCIENCE REVIEWS
  • Keywords: Cryptotephra, Upper Nisyros Pumice, Sea of Marmara, Eastern Mediterranean, ITALIAN EXPLOSIVE VOLCANISM, TENAGHI PHILIPPON, ICE-CORE, CRYPTOTEPHRA RECORD, LESVOS ISLAND, LAYERS, GLASS, GREECE, KOS, TEPHROCHRONOLOGY

Abstract

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. (C) 2021 Elsevier Ltd. All rights reserved.