Seismically-triggered organic-rich layers in recent sediments from Göllüköy Lake (North Anatolian Fault, Turkey)

Handle URI:
http://hdl.handle.net/10754/556726
Title:
Seismically-triggered organic-rich layers in recent sediments from Göllüköy Lake (North Anatolian Fault, Turkey)
Authors:
Avsar, Ulas ( 0000-0002-3224-8399 ) ; Hubert-Ferrari, Aurélia; De Batist, Marc; Lepoint, Gilles; Schmidt, Sabine ( 0000-0002-5985-9747 ) ; Fagel, Nathalie
Abstract:
Multi-proxy analyses on the sedimentary sequence of Göllüköy Lake, which is located on the eastern North Anatolian Fault (NAF), reveals a complete and high-resolution paleoseismic record for the last 650 years. Six sedimentary events are detected in a 3.1 m-long piston core. They form distinct organic-rich intercalations within the background sedimentation, which are characterized by strong anomalies on the loss-on-ignition (LOI550) and total organic carbon (TOC) profiles, as well as by lighter colours on the X-ray radiographic images. Itrax micro-XRF core scanner data are also used to contribute to the detection and characterization of the event deposits. After the detection of the sedimentary events, their temporal correlation with the earthquakes in the historical seismicity catalogue of the NAF is tested. The youngest event is dated to 1940s by using 210Pb and 137Cs profiles in sediment, which coincides with the 1939 earthquake (Ms = 7.7) on the NAF. The ages of the older five events are determined based on radiocarbon dating and regional time–stratigraphic correlation. Radiocarbon dating on the bulk sediment samples does not provide reliable results due to hard-water effect. On the other hand, dating on charcoals, Ephippia of Daphnia and phragmite remains significantly improves the results and implies a mean sedimentation rate of 0.28 cm/yr. Based on this preliminary sedimentation rate, we show that organic matter content variations through our record correlate with the varve-based δ18O record of Nar Lake, which is located 350 km southwest of Göllüköy Lake. Accordingly, high-precipitation/low-evaporation climatic episodes detected in Nar Lake are represented by higher organic matter content in Göllüköy sediments. Fine-tuning the Göllüköy LOI550 record to the Nar δ18O record reveals that the ages of the sedimentary events in Göllüköy match with well-known historical earthquakes that occurred around the lake. Finally, the origin of the organic-rich intercalations is discussed based on macroscopic observations and organic geochemistry. The events are attributed to reworked organic matter eroded from the lake's littoral zone by seismically-induced water oscillations (seiche), and their subsequent deposition at the middle parts of the lake. These seismically-induced events are atypical compared to the classic earthquake-triggered sedimentary processes in lacustrine environments, which are shortly reviewed in order to emphasize the unusual Göllüköy Lake record.
KAUST Department:
Physical Sciences and Engineering (PSE) Division
Citation:
Seismically-triggered organic-rich layers in recent sediments from Göllüköy Lake (North Anatolian Fault, Turkey) 2014, 103:67 Quaternary Science Reviews
Publisher:
Elsevier BV
Journal:
Quaternary Science Reviews
Issue Date:
29-Sep-2014
DOI:
10.1016/j.quascirev.2014.08.020
Type:
Article
ISSN:
02773791
Additional Links:
http://linkinghub.elsevier.com/retrieve/pii/S0277379114003400
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorAvsar, Ulasen
dc.contributor.authorHubert-Ferrari, Auréliaen
dc.contributor.authorDe Batist, Marcen
dc.contributor.authorLepoint, Gillesen
dc.contributor.authorSchmidt, Sabineen
dc.contributor.authorFagel, Nathalieen
dc.date.accessioned2015-06-10T18:43:47Zen
dc.date.available2015-06-10T18:43:47Zen
dc.date.issued2014-09-29en
dc.identifier.citationSeismically-triggered organic-rich layers in recent sediments from Göllüköy Lake (North Anatolian Fault, Turkey) 2014, 103:67 Quaternary Science Reviewsen
dc.identifier.issn02773791en
dc.identifier.doi10.1016/j.quascirev.2014.08.020en
dc.identifier.urihttp://hdl.handle.net/10754/556726en
dc.description.abstractMulti-proxy analyses on the sedimentary sequence of Göllüköy Lake, which is located on the eastern North Anatolian Fault (NAF), reveals a complete and high-resolution paleoseismic record for the last 650 years. Six sedimentary events are detected in a 3.1 m-long piston core. They form distinct organic-rich intercalations within the background sedimentation, which are characterized by strong anomalies on the loss-on-ignition (LOI550) and total organic carbon (TOC) profiles, as well as by lighter colours on the X-ray radiographic images. Itrax micro-XRF core scanner data are also used to contribute to the detection and characterization of the event deposits. After the detection of the sedimentary events, their temporal correlation with the earthquakes in the historical seismicity catalogue of the NAF is tested. The youngest event is dated to 1940s by using 210Pb and 137Cs profiles in sediment, which coincides with the 1939 earthquake (Ms = 7.7) on the NAF. The ages of the older five events are determined based on radiocarbon dating and regional time–stratigraphic correlation. Radiocarbon dating on the bulk sediment samples does not provide reliable results due to hard-water effect. On the other hand, dating on charcoals, Ephippia of Daphnia and phragmite remains significantly improves the results and implies a mean sedimentation rate of 0.28 cm/yr. Based on this preliminary sedimentation rate, we show that organic matter content variations through our record correlate with the varve-based δ18O record of Nar Lake, which is located 350 km southwest of Göllüköy Lake. Accordingly, high-precipitation/low-evaporation climatic episodes detected in Nar Lake are represented by higher organic matter content in Göllüköy sediments. Fine-tuning the Göllüköy LOI550 record to the Nar δ18O record reveals that the ages of the sedimentary events in Göllüköy match with well-known historical earthquakes that occurred around the lake. Finally, the origin of the organic-rich intercalations is discussed based on macroscopic observations and organic geochemistry. The events are attributed to reworked organic matter eroded from the lake's littoral zone by seismically-induced water oscillations (seiche), and their subsequent deposition at the middle parts of the lake. These seismically-induced events are atypical compared to the classic earthquake-triggered sedimentary processes in lacustrine environments, which are shortly reviewed in order to emphasize the unusual Göllüköy Lake record.en
dc.publisherElsevier BVen
dc.relation.urlhttp://linkinghub.elsevier.com/retrieve/pii/S0277379114003400en
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Quaternary Science Reviews. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Quaternary Science Reviews, 29 September 2014. DOI: 10.1016/j.quascirev.2014.08.020en
dc.subjectSeicheen
dc.subjectEphippia of Daphniaen
dc.subjectTime–stratigraphic correlationen
dc.subjectRadiochronologyen
dc.subjectThe North Anatolian Faulten
dc.subjectLacustrine paleoseismologyen
dc.subjectGöllüköy Lakeen
dc.subjectNar Lakeen
dc.subjectPrinciple component analysisen
dc.titleSeismically-triggered organic-rich layers in recent sediments from Göllüköy Lake (North Anatolian Fault, Turkey)en
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalQuaternary Science Reviewsen
dc.eprint.versionPost-printen
dc.contributor.institutionRenard Centre of Marine Geology (RCMG), Ghent University, Krijgslaan 281, 9000 Gent, Belgiumen
dc.contributor.institutionUnit of Physical and Quaternary Geography, University of Liège, Sart Tilman, B-4000 Liège, Belgiumen
dc.contributor.institutionLaboratory of Oceanology – MARE Center, University of Liège, Sart Tilman, B-4000 Liège, Belgiumen
dc.contributor.institutionUMR 5805 EPOC OASU, University of Bordeaux, 33405 Talence Cedex, Franceen
dc.contributor.institutionDepartment of Geology, University of Liège, Sart Tilman, B-4000 Liège, Belgiumen
kaust.authorAvsar, Ulasen
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