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| Titel |
Tephrostratigraphic studies on a sediment core from Lake Prespa in the Balkans |
| VerfasserIn |
M. Damaschke, R. Sulpizio, G. Zanchetta, B. Wagner, A. Böhm, N. Nowaczyk, J. Rethemeyer, A. Hilgers |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1814-9324
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| Digitales Dokument |
URL |
| Erschienen |
In: Climate of the Past ; 9, no. 1 ; Nr. 9, no. 1 (2013-01-30), S.267-287 |
| Datensatznummer |
250017437
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| Publikation (Nr.) |
 copernicus.org/cp-9-267-2013.pdf |
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| Zusammenfassung |
| A detailed tephrostratigraphic record, which dates back to Marine
Isotope Stage (MIS) 5b (ca. 91 kyr), has been established from a 17.76 m
long core (Co1215) from Lake Prespa (Macedonia, Albania and Greece). A total
of eleven tephra and cryptotephra layers (PT0915-1 to PT0915-11) were
identified, using XRF scanning, magnetic susceptibility measurements, and
macro- and microscopic inspection of the sediments. The major element
composition of glass shards and/or micro-pumice fragments indicates that the
tephras and cryptotephras originate from the explosive volcanism of Italy.
Eight tephra and cryptotephra layers were correlated with specific volcanic
eruptions: the AD 512 eruption of Somma-Vesuvius (1438 cal yr BP), the
Mercato eruption of Somma-Vesuvius (8890 ± 90 cal yr BP), the Tufi
Biancastri/LN1-LN2 eruption of the Campi Flegrei (14 749 ± 523 cal yr BP
and 15 551 ± 621 cal yr BP), the SMP1-e/Y-3 eruption of the Campi
Flegrei (30 000–31 000 cal yr BP), the Campanian Ignimbrite/Y-5 eruption of
the Campi Flegrei (39 280 ± 110 cal yr BP), the SMP1-a event of Ischia
Island (around 44 000 cal yr BP) and the Green Tuff/Y-6 eruption of
Pantelleria Island (around 45 000 cal yr BP). One tephra could be attributed
to the volcanic activity of Mount Etna, but probably represents an
unknown eruption at ca. 60 000 cal yr BP. Cryptotephras PT0915-6 and
PT0915-10 remain unclassified so far, but according to the presented
age-depth model these would have been deposited around 35 000 and 48 500 cal yr BP,
respectively. Some of the tephras and cryptotephras are recognised
for the first time in the Balkan region. The tephrostratigraphic work
provides important information about ash dispersal and explosion patterns of
source volcanoes and can be used to correlate and date geographically
distant paleoenvironmental and archaeological archives in the central
Mediterranean region. Moreover, the tephrostratigraphic work in combination
with radiocarbon and electron spin resonance (ESR) dating is a precondition
for paleoclimatic reconstructions inferred from the sediment succession
Co1215. |
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