A 3000 yr history of earthquakes recorded in Hazar Lake potentially related to ruptures along the East Anatolian Fault (Turkey)

2015-04-19
Lamair, Laura
Hage, Sophie
Hubert-ferrari, Aurelia
Avşar, Ulaş
El Ouahabi, Meriam
Çağatay, Namık
Boulvain, Frederic
In this study, we focus on the paleoseismicity of the East Anatolian Fault (EAF). We investigated Hazar Lake, a pull-apart basin located on the EAF. During the campaign of 2007, short and long cores were taken from the bottom of the lake. Several thin earthquake-triggered sedimentary events (less than 2 cm) were detected in the cores. Radiometric dating (14C, 210Pb, 137Cs) revealed the correlation between the youngest four events and historical earthquakes in 1874-75, 1779-1789, 1513-1514 and 1285. Thin sections showed that the sedimentary events are composed of several thin turbidites, characterized by bioturbated coarse basal sand layers. The bioturbation indicates the time elapsed between two sub-events. We inferred that Hazar Lake is extremely sensitive to earthquake shaking, and its sedimentary sequence may contain a complete record of large M>6.5 paleoearthquakes along the EAF.
Citation Formats
L. Lamair et al., “A 3000 yr history of earthquakes recorded in Hazar Lake potentially related to ruptures along the East Anatolian Fault (Turkey),” 2015, p. 262, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/87826.