Lake Hazar: a potential high-resolution 150 ka record of climate and tectonic interactions in Anatolia

Date

2008-12-19

Author

Boes, Xavier
Moernaut, Jasper
Avşar, Ulaş
Çağatay, Namık
Hubert-ferrari, Aurelia

Metadata

Show full item record

Item Usage Stats

98
views

0
downloads

Over the last decade, a tremendous number of researches on climate and tectonic interactions have converged on Turkey, mostly on the NAF (North Anatolian Fault) near Istanbul. For example, the Marmara Sea has been the focus of an increasing number of international drilling projects, as the marine sediments of this region provide long-term climate and tectonic reconstructions. Comparatively, the EAF (East Anatolian Fault) is far from the sea and is few documented in terms of geological records (i.e. Lake Van is away from the NAF trend). However, like for the NAF, the EAF has a relative simple structure (strike-slip faulting) leading to large surface rupturing earthquakes (100 km -Ms > 7). In the south-east region, a remarkable example of land structure is the Sincik/Hazar-Hazar/Palu fault segments interrupted by an exceptional large (20 km) and deep (212 m) sedimentary basin (Lake Hazar). This natural archive provides a unique chronostratigraphic sequence on the south-eastern Anatolian plate boundary. According to Cetin et al. 2003, the lake record could spend the last 150 ka; this interpretation is confirmed by a new seismic survey and by the study of the first sediment cores collected in the lake in 2007. Our results show that the proximal lake basin is characterized by a continuous sedimentary sequence of ~80 m that could be valuably drilled. The first five meters of lake sediments show series of thin distinct seismo-turbidites preserved between climatically induced sediments. A high resolution radiocarbon age modelling (one radiocarbon date every 200 yr) validate the continuity of the record, making this lake a new valuable high-resolution continental record for the south-east Anatolian region. This important new natural record has never been deeply cored by scientific community. As a clue, this lake would be a good candidate for an ICDP deep drilling project aiming to get the most extensive chronologies of climate and tectonic in south east Anatolia.

URI

https://hdl.handle.net/11511/70998

Conference Name

American Geophysical Union - Fall Meeting (2008)

Collections

Department of Geological Engineering, Conference / Seminar

Suggestions

OpenMETU
Core

Hydrochemistry isotopic ratios and origin of thermal fluids in eastern Anatolia Aydın, Harun; Karakuş, Hüseyin; Mutlu, Halim; Güleç, Nilgün Türkan; Hılton, Davıd (2016-09-25) As a result of active volcanism and tectonism, the eastern Anatolian region in Turkey is represented by a high geothermal potential. In this study, we evaluate chemical and isotopic compositions of several geothermal springs in eastern Anatolia with emphasis on hydrochemical/isotopic characteristics and reservoir temperatures. Thermal waters were sampled in areas of Miocene volcanism (northeastern Anatolia) whilst some are collected in localities near historically-active volcanoes (e.g. Ağrı, Tendürek and S...
Empirical correlations of shear wave velocity (V-s) and penetration resistance (SPT-N) for different soils in an earthquake-prone area (Erbaa-Turkey) Akin, Muge K.; Kramer, Steven L.; Topal, Tamer (2011-04-12) The seismicity of the northern part of Turkey is mainly controlled by the North Anatolian Fault zone (NAFZ). The NAFZ is one of the world's most active seismic zones, and has produced destructive earthquakes and related hazards in the northern region of Turkey. Several earthquakes and earthquake-related hazards have occurred along different segments of this fault zone in the recent past. The study area, Erbaa town, is located along the eastern segment of North Anatolian Fault Zone (NAFZ) and is one of the l...
Spatial variations of active stress patterns and frequencymagnitude distribution of earthquakes in Western Anatolia, Turkey Shah, S Tanvir; Özacar, Atilla Arda (null; 2018-04-23) Western Anatolia is one of the most important tectonic elements of Turkey, and constitutes the eastern margin of Aegean Extensional Province. The area is one of the most seismically active continental margins around the globe experiencing N-S extension. Earthquake data in this study is used to analyze the active stress patterns and to estimate the earthquake return periods for different sub-regions in western Anatolia. Focal mechanism solution data is used for determining the orientations and ratios of prin...
Noble gases and rock geochemistry of alkaline intraplate volcanics from the Amik and Ceyhan-Osmaniye areas, SE Turkey Italiano, F.; YÜCE, GALİP; Di Bella, M.; Rojay, Fuat Bora; Sabatino, G.; Tripodo, A.; Martelli, M.; Rizzo, A. L.; Misseri, M. (2017-10-10) The SE part of Turkey is characterized by a transtensional regime within the complex collision zone between the Anatolian, Arabian and African plates, which is bounded by two main faults, Dead Sea Fault and its splays on east and the Karasu Fault on west. In this tectonic and geodynamic context developed the Amik and further North, Erzin and Toprakkale districts, which are located onshore the Iskenderun Gulf, with the occurrence of a widespread and young alkaline volcanism dated from 1.57 to 0.05 Ma in Amik...
Hydropower production without sacrificing environment: a case study of Ilisu Dam and Hasankeyf Yalcin, Emrah; Tiğrek, Şahnaz (2016-01-01) The Ilisu Dam and HEPP Project, on the Tigris River in the South-Eastern Anatolia Region of Turkey, has been under debate for more than half a century due to its possible adverse effects on the environment. In particular, the proposed inundation of the archaeological sites around Hasankeyf has prompted strong criticism from national and international organizations. The primary reason for the administration's insistence on construction of the dam is its energy production capacity. The present study is an ass...

Citation Formats

X. Boes, J. Moernaut, U. Avşar, N. Çağatay, and A. Hubert-ferrari, “Lake Hazar: a potential high-resolution 150 ka record of climate and tectonic interactions in Anatolia,” presented at the American Geophysical Union - Fall Meeting (2008), 2008, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/70998.