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| Titel |
Geological record of tsunami inundations in Pantano Morghella (south-eastern Sicily) both from near and far-field sources |
| VerfasserIn |
F. Gerardi, A. Smedile, C. Pirrotta, M. S. Barbano, P. M. Martini, S. Pinzi, A. M. Gueli, G. M. Ristuccia, G. Stella, S. O. Troja |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 12, no. 4 ; Nr. 12, no. 4 (2012-04-26), S.1185-1200 |
| Datensatznummer |
250010712
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| Publikation (Nr.) |
 copernicus.org/nhess-12-1185-2012.pdf |
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| Zusammenfassung |
| Analysis of tsunami deposits from the Pantano Morghella area provided
geological evidence for two inundations occurred along the south-eastern
Ionian coast of Sicily. Pantano Morghella is a large pond characterised by a
fine-grained sedimentation indicating a low-energy depositional environment.
Two anomalous yellow sandy layers found at different depths indicate the
occurrence of high-energy marine inundations. We studied sedimentological
and paleontological features of the anomalous deposits as well as their
spatial distribution observing the following properties: different facies
with respect to the local stratigraphic sequence; erosive bases, rip-up
clasts and broken elements testifying violent deposition mechanisms; macro
and micro fauna of marine environment; relatively constant thickness
throughout most of the depositional zone with thinning at the distal end;
large sand sheets that extend inland. These observations, jointly with their
infrequency in the sedimentary record and the age indicating a fast
deposition, provided strong evidence for tsunami inundations. Correlations
between anomalous layers and historical tsunamis are supported by
radiocarbon and OSL dating results. The younger deposit is likely due to the
1908 near-source tsunami, whereas the flooding of the oldest event is most
likely associated with a far and large source, the Crete 365 AD earthquake. |
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