A tephrostratigraphic record for the last glacial-interglacial cycle from Lake Ohrid, Albania and Macedonia

Vogel, Hendrik; Zanchetta, Giovanni; Sulpizio, Roberto; Wagner, Bernd; Nowaczyk, Norbert (2010). A tephrostratigraphic record for the last glacial-interglacial cycle from Lake Ohrid, Albania and Macedonia. Journal of quaternary science JQS, 25(3), pp. 320-338. John Wiley & Sons, Ltd. 10.1002/jqs.1311

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ABSTRACT: Here we present a tephrostratigraphic record (core Co1202) recovered from the northeastern
part of Lake Ohrid (Republics of Macedonia and Albania) reaching back to Marine Isotope
Stage (MIS) 6. Overall ten horizons (OT0702-1 to OT0702-10) containing volcanic tephra have been
recognised throughout the 14.94m long sediment succession. Four tephra layers were visible at
macroscopic inspection (OT0702-4, OT0702-6, OT0702-8 and OT0702-9), while the remaining six
are cryptotephras (OT0702-1, OT0702-2, OT0702-3, OT0702-5, OT0702-7 and OT0702-10) identified
from peaks in K, Zr and Sr intensities, magnetic susceptibility measurements, and washing and
sieving of the sediments. Glass shards of tephra layers and cryptotephras were analysed with respect to
their major element composition, and correlated to explosive eruptions of Italian volcanoes. The
stratigraphy and the major element composition of tephra layers and cryptotephras allowed the
correlation of OT0702-1 to AD 472 or AD 512 eruptions of Somma-Vesuvius, OT0702-2 to the FL
eruption of Mount Etna, OT0702-3 to the Mercato from Somma-Vesuvius, OT0702-4 to SMP1-e/Y-3
eruption from the Campi Flegrei caldera, OT0702-5 to the Codola eruption (Somma-Vesuvius or
Campi Flegrei), OT0702-6 to the Campanian Ignimbrite/Y-5 from the Campi Flegrei caldera, OT0702-
7 to the Green Tuff/Y-6 eruption from Pantelleria Island, OT0702-8 to the X-5 eruption probably
originating from the Campi Flegrei caldera, OT0702-9 to the X-6 eruption of generic Campanian
origin, and OT0702-10 to the P-11 eruption from Pantelleria Island. The fairly well-known ages of
these tephra layers and parent eruptions provide new data on the dispersal and deposition of these
tephras and, furthermore, allow the establishment of a chronological framework for core Co1202 for a
first interpretation of major sedimentological changes.

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