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

Ulas Avsar, Aurélia Hubert-Ferrari, Marc De Batist, Nathalie Fagel

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

High-resolution physical, geochemical, and geochronological analyses on the sedimentary sequence of Yeniçağa 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. Yeniçağa 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.
Original languageEnglish (US)
Pages (from-to)377-384
Number of pages8
JournalGeophysical Research Letters
Volume41
Issue number2
DOIs
StatePublished - Jan 30 2014

ASJC Scopus subject areas

  • Geophysics
  • Earth and Planetary Sciences(all)

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