cp-10-261-2014.pdf (1.35 MB)
Download file

Distinct lake level lowstand in Lake Prespa (SE Europe) at the time of the 74 (75) ka Toba eruption

Download (1.35 MB)
journal contribution
posted on 14.07.2015, 09:00 by Melanie J. Leng, B. Wagner, T. Wilke, A. Böhm, K. Panagiotopoulos, H. Vogel, J. H. Lacey, G. Zanchetta, R. Sulpizio
The 74 (75) ka Toba eruption in Sumatra, Indonesia, is considered to be one of the largest volcanic events during the Quaternary. Tephra from the Toba eruption has been found in many terrestrial and marine sedimentary deposits, and acidity peaks related to the eruption have been used to synchronize ice core records from Greenland and Antarctica. Seismic profiles and sedimentological data from Lake Prespa on the Balkan Peninsula, SE Europe, indicate a lake level lowstand at 73.6 ± 7.7 ka based on ESR dating of shells. Tephrostratigraphy, radiocarbon dating and tuning of the total organic carbon content with the NGRIP isotope record, corroborate that the lake level lowstand was a short-term event superimposed on the general cooling trend at the end of MIS 5, most likely at the onset of the Greenland Stadial GS-20. Acknowledging that tectonic events or karst processes could have triggered this lake level lowstand, the chronological correspondence between the lowstand and the Toba eruption is intriguing. Therefore a Toba-driven short-term shift to aridity in the Balkan region, leading to lake level changes and triggering spatial expansion events in one of the lake's most abundant benthic species, the carino mussel Dreissena presbensis, cannot be excluded.

History

Citation

Climate of the Past, 2014, 10, pp. 261-267

Author affiliation

/Organisation/COLLEGE OF SCIENCE AND ENGINEERING/Department of Geology

Version

VoR (Version of Record)

Published in

Climate of the Past

Publisher

Copernicus Publications on behalf of the European Geosciences Union

issn

1814-9332

eissn

1814-9332

Acceptance date

21/01/2014

Copyright date

2014

Available date

14/07/2015

Publisher version

http://www.clim-past.net/10/261/2014/cp-10-261-2014.html

Language

en

Usage metrics

Categories

Keywords

Exports