Article (Scientific journals)
Paleoseismic record obtained by coring a sag-pond along the North Anatolian Fault (Turkey)
Hubert, Aurelia; Avsar, Ulas; El Ouahabi, Meriam et al.
2012In Annals of Geophysics, 55 (5)
Peer Reviewed verified by ORBi
 

Files


Full Text
PaperAsacitepecikLake_HubertFerrari.pdf
Publisher postprint (4 MB)
Download

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
seismites; sedimentary cores; North Anatolian Fault
Abstract :
[en] Shallow lakes along minor structural bends or discontinuities of strike-slip faults are not usually paleoseismological target sites. In the present study, we show that a 2-m-deep, 700-m-long lake that is cross-cut by the North Anatolian Fault contains a reliable paleoseimological record that can be obtained through coring. The North Anatolian Fault is a major strike-slip fault in Turkey, and it last ruptured across the Aşağıtepecik Lake in 1939, with a slip of about 6 m. Seismic lines still show remains of the fault rupture in the form of minor scarps across the lake. Collected short cores show a set of sedimentary sequences. Each sequence is composed of similar organic-rich sedimentary units. The lower unit is dark and fibrous, and is similar to the present sedimentation at the top of the core. The upper unit is disturbed and has anomalous organic matter content, grain size and mineralogy. It is interpreted as an earthquake-induced sedimentary event. The 2.5-m-long AT2007LG core comprises four sequences, and four sedimentary events. Radiogenic 210 Pb and 137 Cs data obtained previously imply that the shallowest event 1 was triggered by the 1939 M = 7.9 Erzincan earthquake. Radiocarbon dating and correlation to a reference varved record suggest that events 2 and 4 were initiated by the 1668 and 1254 historical earthquakes. Event 3 does not correspond to a large historical earthquake on the North Anatolian Fault.
Disciplines :
Earth sciences & physical geography
Author, co-author :
Hubert, Aurelia  ;  Université de Liège > Département de géographie > Géomorphologie et Géologie du Quaternaire
Avsar, Ulas
El Ouahabi, Meriam  ;  Université de Liège - ULiège > Département de géologie > Argiles, géochimie et environnements sédimentaires
Lepoint, Gilles  ;  Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Océanologie
Martinez, Philippe
Fagel, Nathalie  ;  Université de Liège - ULiège > Département de géologie > Argiles, géochimie et environnements sédimentaires
Language :
English
Title :
Paleoseismic record obtained by coring a sag-pond along the North Anatolian Fault (Turkey)
Publication date :
2012
Journal title :
Annals of Geophysics
ISSN :
1593-5213
eISSN :
2037-416X
Publisher :
Editrice Compositori srl, Italy
Volume :
55
Issue :
5
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 28 January 2016

Statistics


Number of views
31 (4 by ULiège)
Number of downloads
35 (0 by ULiège)

Scopus citations®
 
18
Scopus citations®
without self-citations
11
OpenCitations
 
4

Bibliography


Similar publications



Contact ORBi