DOI: 10.1016/j.quascirev.2014.08.020
Scopus记录号: 2-s2.0-84930233906
论文题名: Seismically-triggered organic-rich layers in recent sediments from Göllüköy Lake (North Anatolian Fault, Turkey)
作者: Avşar U. ; Hubert-Ferrari A. ; De Batist M. ; Lepoint G. ; Schmidt S. ; Fagel N.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2014
卷: 103 起始页码: 67
结束页码: 80
语种: 英语
英文关键词: Ephippia of Daphnia
; Göllüköy Lake
; Lacustrine paleoseismology
; Nar Lake
; Principle component analysis
; Radiochronology
; Seiche
; The North Anatolian Fault
; Time-stratigraphic correlation
Scopus关键词: Biogeochemistry
; Biological materials
; Carbon
; Charcoal
; Faulting
; Geochemistry
; Geophysics
; Lakes
; Organic carbon
; Organic compounds
; Principal component analysis
; Sedimentation
; Sedimentology
; Sediments
; Stratigraphy
; X ray radiography
; Daphnia
; North Anatolian Fault
; Paleoseismology
; Principle component analysis
; Radiochronology
; Seiche
; Stratigraphic correlation
; Earthquakes
; Daphnia
英文摘要: 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. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60427
Appears in Collections: 过去全球变化的重建
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作者单位: Renard Centre of Marine Geology (RCMG), Ghent University, Krijgslaan 281, Gent, Belgium; Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia; Unit of Physical and Quaternary Geography, University of Liège, Sart Tilman, Liège, Belgium; Laboratory of Oceanology - MARE Center, University of Liège, Sart Tilman, Liège, Belgium; UMR 5805 EPOC OASU, University of Bordeaux, Talence Cedex, France; Department of Geology, University of Liège, Sart Tilman, Liège, Belgium
Recommended Citation:
Avşar U.,Hubert-Ferrari A.,De Batist M.,et al. Seismically-triggered organic-rich layers in recent sediments from Göllüköy Lake (North Anatolian Fault, Turkey)[J]. Quaternary Science Reviews,2014-01-01,103