A 3400year lacustrine paleoseismic record from the North Anatolian Fault, Turkey: Implications for bimodal recurrence behavior

High-resolution physical, geochemical, and geochronological analyses on the sedimentary sequence of Yenicaa Lake, located in a fault-bounded basin along the North Anatolian Fault, reveal fingerprints of paleoearthquakes. A robust sediment chronology, spanning the last 3400 years, is constructed by r...

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Bibliographic Details
Published inGeophysical research letters Vol. 41; no. 2; pp. 377 - 384
Main Authors Avsar, Ulas, Hubert-Ferrari, Aurelia, Batist, Marc De, Fagel, Nathalie
Format Journal Article
LanguageEnglish
Published Washington John Wiley & Sons, Inc 01.01.2014
Subjects
Deposition
Earthquakes
Faults
Fingerprints
Freshwater
Geochronology
Intervals
Lakes
Plate tectonics
Radiocarbon dating
Sediments
Seismic phenomena
Seismology
MED, Aegean Sea, North Anatolian Fault
Turkey
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Summary:High-resolution physical, geochemical, and geochronological analyses on the sedimentary sequence of Yenicaa Lake, located in a fault-bounded basin along the North Anatolian Fault, reveal fingerprints of paleoearthquakes. A robust sediment chronology, spanning the last 3400 years, is constructed by radiocarbon dating and time-stratigraphical correlation with the precisely dated Sofular Cave speleothem record. Yenicaa sedimentary sequence contains 11 seismically induced event deposits characterized by siliciclastic-enriched intervals. Some of the event deposits are also associated with implications of sudden lake deepening, which may be related to coseismic subsidence. The paleoearthquake series having an average recurrence interval of ca. 260 years are interrupted by two possible seismic gaps of ca. 420 and 540 years.
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ISSN:0094-8276
1944-8007
DOI:10.1002/2013GL058221