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Structure and recent evolution of the Hazar Basin : a strike-slip basin on the East Anatolian Fault, Eastern Turkey

David Garcia Moreno UGent, A Hubert-Ferrari, Jasper Moernaut UGent, JG Fraser, X Boes, Maarten Van Daele UGent, Ulaş Avşar, N Çağatay and Marc De Batist UGent (2011) BASIN RESEARCH. 23(2). p.191-207
abstract
The Hazar Basin is a 25 km-long, 7 km-wide and 216m-deep depression located on the central section of the East Anatolian Fault zone (easternTurkey) and predominantly overlain by LakeHazar.This basin has been described previously as a pull-apart basin because of its rhombic shape and an apparent fault step-over between the main fault traces situated at the southwestern and northeastern ends of the lake.However, detailed structural investigation beneath Lake Hazar has not been undertaken previously to verify this interpretation.Geophysical and sedimentological data from Lake Hazar were collected during ¢eld campaigns in 2006 and 2007.The analysis of this data reveals that the main strand of the East Anatolian Fault (the Master Fault) is continuous across the Hazar Basin, connecting the two segments previously assumed to be the sidewall faults of a pull-apart structure. In the northeastern part of the lake, an asymmetrical subsiding sub-basin, bounded by two major faults, is cross-cut by the Master Fault, which forms a releasing bendwithin the lake. Comparison of the structure revealed by this study with analogue models produced for transtensional step-overs suggests that theHazar Basin structure represents a highly evolved pull-apart basin, to the extent that the previous asperity has been bypassed by a linking fault.The absence of a step-over structure at the Hazar Basin means that no signi¢cant segmentation boundary is recognised on the East Anatolian Fault between Palu and Sincik.Therefore, this fault segment is capable of causing larger earthquakes than recognised previously.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
PULL-APART BASINS, 1999 IZMIT EARTHQUAKE, SOUTHEASTERN TURKEY, MEDITERRANEAN REGION, ACTIVE TECTONICS, SURFACE RUPTURE, PLATE MOTIONS, MIDDLE-EAST, SE TURKEY, ZONE
journal title
BASIN RESEARCH
Basin Res.
volume
23
issue
2
pages
191 - 207
Web of Science type
Article
Web of Science id
000287851200004
JCR category
GEOSCIENCES, MULTIDISCIPLINARY
JCR impact factor
2.061 (2011)
JCR rank
45/170 (2011)
JCR quartile
2 (2011)
ISSN
0950-091X
DOI
10.1111/j.1365-2117.2010.00476.x
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
1191801
handle
http://hdl.handle.net/1854/LU-1191801
date created
2011-03-18 18:01:51
date last changed
2017-12-05 08:37:18
@article{1191801,
  abstract     = {The Hazar Basin is a 25 km-long, 7 km-wide and 216m-deep depression located on the central section of the East Anatolian Fault zone (easternTurkey) and predominantly overlain by LakeHazar.This basin has been described previously as a pull-apart basin because of its rhombic shape and an apparent fault step-over between the main fault traces situated at the southwestern and northeastern ends of the lake.However, detailed structural investigation beneath Lake Hazar has not been undertaken previously to verify this interpretation.Geophysical and sedimentological data from Lake Hazar were collected during {\textcent}eld campaigns in 2006 and 2007.The analysis of this data reveals that the main strand of the East Anatolian Fault (the Master Fault) is continuous across the Hazar Basin, connecting the two segments previously assumed to be the sidewall faults of a pull-apart structure. In the northeastern part of the lake, an asymmetrical subsiding sub-basin, bounded by two major faults, is cross-cut by the Master Fault, which forms a releasing bendwithin the lake. Comparison of the structure revealed by this study with analogue models produced for transtensional step-overs suggests that theHazar Basin structure represents a highly evolved pull-apart basin, to the extent that the previous asperity has been bypassed by a linking fault.The absence of a step-over structure at the Hazar Basin means that no signi{\textcent}cant segmentation boundary is recognised on the East Anatolian Fault between Palu and Sincik.Therefore, this fault segment is capable of causing larger earthquakes than recognised previously.},
  author       = {Garcia Moreno, David and Hubert-Ferrari, A and Moernaut, Jasper and Fraser, JG and Boes, X and Van Daele, Maarten and Av\c{s}ar, Ula\c{s} and \c{C}a\u{g}atay, N and De Batist, Marc},
  issn         = {0950-091X},
  journal      = {BASIN RESEARCH},
  keyword      = {PULL-APART BASINS,1999 IZMIT EARTHQUAKE,SOUTHEASTERN TURKEY,MEDITERRANEAN REGION,ACTIVE TECTONICS,SURFACE RUPTURE,PLATE MOTIONS,MIDDLE-EAST,SE TURKEY,ZONE},
  language     = {eng},
  number       = {2},
  pages        = {191--207},
  title        = {Structure and recent evolution of the Hazar Basin : a strike-slip basin on the East Anatolian Fault, Eastern Turkey},
  url          = {http://dx.doi.org/10.1111/j.1365-2117.2010.00476.x},
  volume       = {23},
  year         = {2011},
}

Chicago
Garcia Moreno, David, A Hubert-Ferrari, Jasper Moernaut, JG Fraser, X Boes, Maarten Van Daele, Ulaş Avşar, N Çağatay, and Marc De Batist. 2011. “Structure and Recent Evolution of the Hazar Basin : a Strike-slip Basin on the East Anatolian Fault, Eastern Turkey.” Basin Research 23 (2): 191–207.
APA
Garcia Moreno, D., Hubert-Ferrari, A., Moernaut, J., Fraser, J., Boes, X., Van Daele, M., Avşar, U., et al. (2011). Structure and recent evolution of the Hazar Basin : a strike-slip basin on the East Anatolian Fault, Eastern Turkey. BASIN RESEARCH, 23(2), 191–207.
Vancouver
1.
Garcia Moreno D, Hubert-Ferrari A, Moernaut J, Fraser J, Boes X, Van Daele M, et al. Structure and recent evolution of the Hazar Basin : a strike-slip basin on the East Anatolian Fault, Eastern Turkey. BASIN RESEARCH. 2011;23(2):191–207.
MLA
Garcia Moreno, David, A Hubert-Ferrari, Jasper Moernaut, et al. “Structure and Recent Evolution of the Hazar Basin : a Strike-slip Basin on the East Anatolian Fault, Eastern Turkey.” BASIN RESEARCH 23.2 (2011): 191–207. Print.