distinct lake level lowstand in lake prespa (se europe) at the time of the 74 (75) ka toba eruption
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2014
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Abstract
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.
| Reference Key |
wagner2014climatedistinct
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|---|---|
| Authors | ;B. Wagner;M. J. Leng;T. Wilke;A. Böhm;K. Panagiotopoulos;H. Vogel;J. H. Lacey;G. Zanchetta;R. Sulpizio |
| Journal | proceedings - 16th ieee/acis international conference on computer and information science, icis 2017 |
| Year | 2014 |
| DOI |
10.5194/cp-10-261-2014
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| URL | |
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