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This study focuses on obtaining luminescence ages in feldspar contaminated quartz from well-developed fluvial terraces of the Yesilirmak (Iris) river located inside the eastern North Anatolian Fault Shear Zone (NAFZ). We applied a technique based on conventional single-aliquot regenerative-dose (SAR) protocol, modified with an IR pre-treatment to reduce the OSL contribution from feldspar for accurately measuring the dose in quartz. All investigated samples showed an ability to measure a beta dose given in the laboratory, a so called dose recovery test. The dependence of the equivalent dose on thermal treatment was also examined. Dose rate calculations were based on spectral analysis of gamma measurements by a field spectrometer on site. The efforts to establish a chronology using the IR modified SAR technique produced reliable dose results in stratigraphic order. Results were reproducible and grouped broadly between 35-109 ka for Bektemur, 32-36 ka for Kizilca, 19-47 ka for Aksalur and 35-44 ka for Sahinkaya. Obtained results show that the studied area was controlled by tectonic activities within the last 50 ka and the sample Aksalur 2 was the loess deposit formed by aeolian activity.
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Rocznik
Tom
Strony
55--60
Opis fizyczny
Bibliogr. 22 poz., rys., tab.
Twórcy
autor
autor
- ISIK University, Faculty of Science and Arts, Physics Department, Sile, 34980 Istanbul, Turkey, kiyak@isikun.edu.tr
Bibliografia
- 1. Bailey RM, 1998. Depletion of the Quartz OSL Signal Using Low Photon Energy Stimulation. Ancient TL 16: 33-36.
- 2. Banerjee D, Murray AS, Bøtter-Jensen L and Lang A, 2001. Equivalent Dose Estimation Using a Single Aliquot of Polymineral Fine Grains. Radiation Measurements 33(1): 73-94, DOI 10.1016/S1350-4487(00)00101-3.
- 3. Bolikhovskaya NS and Molodkov AN, 2006. East European loesspalaeosol sequences: Palynology, stratigraphy and correlation. Quaternary International 149(1): 24-36, DOI 10.1016/j.quaint.2005.11.015.
- 4. Bøtter-Jensen L, Duller GAT, Murray AS and D Banerjee D, 1999a. Blue light emitting diodes for optical stimulation of quartz in retrospective dosimetry and dating. Radiation Protection Dosimetry 84: 335-340.
- 5. Bøtter-Jensen L, Mejdahl V and Murray AS, 1999b. New light on OSL. Quaternary Science Reviews 18(2): 303-309, DOI 10.1016/S0277-3791(98)00063-8.
- 6. Bulur E, 1996. An Alternative Technique for Optically Stimulated Luminescence (OSL) Experiment. Radiation Measurements 26(5): 701-709, DOI 10.1016/S1350-4487(97)82884-3.
- 7. Duller GAT and Bøtter-Jensen L, 1993. Luminescence from potassium feldspars stimulated by infrared and green light. Radiation Protection Dosimetry 47: 683-688.
- 8. Duller GAT, 1994. Luminescence Dating Using Feldspars: A Test Case from Southern North Island, New Zealand. Quaternary Science Reviews 13(5-7): 423-427, DOI 10.1016/0277-3791(94)90053-1.
- 9. Fragoulis DV and Readhead ML, 1991. Feldspar inclusions and the enhancement of thermoluminescence in quartz grains. Nuclear Tracks and Radiation Measurements 18(3): 291-296, DOI 10.1016/1359-0189(91)90020-I.
- 10. GRIP Project Members 1993. Climate instability during the last interglacial period recorded in the GRIP ice core. Nature 364(6434): 203-207, DOI 10.1038/364203a0.
- 11. Haase D, Fink J, Haase G, Ruske R, Pecsi M, Richter H, Altermann M, Jager KD, 2007. Loess in Europe-its spatial distribution based on a European Loess Map, scale1:2,500,000, Quaternary Science Reviews 26(9-10): 1301-1312, DOI 10.1016/j.quascirev.2007.02.003.
- 12. Huntley DJ and Lamothe M, 2001. Ubiquity of anomalous fading in Kfeldspars and the measurement and correction for it in optical dating. Canadian Journal of Earth Sciences 38(7): 1093-1106, DOI 10.1139/cjes-38-7-1093.
- 13. Jain M and Singhvi AK, 2001. Limits to Depletion of Blue-green Light Stimulated Luminescence in Feldspars: Implications for Quartz Dating. Radiation Measurements 33(6): 883-892, DOI 10.1016/S1350-4487(01)00104-4.
- 14. Murray AS and Wintle AG, 2000. Luminescence Dating of Quartz Using an Improved Single-aliquot Regenerative-dose Protocol. Radiation Measurements 32(1): 57-73, DOI 10.1016/S1350-4487(99)00253-X.
- 15. Olley JM, Murray AS and Robert RG, 1996. The effects of disequilibria in the uranium and thorium decay chain on burial dose rates in fluvial sediments. Quaternary Science Reviews 15(7): 751-760, DOI 10.1016/0277-3791(96)00026-1.
- 16. Prescott JR and Hutton JT, 1988. Cosmic ray and gamma ray dosimetry for TL and ESR. Nuclear Tracks Radiation Measurements 14(1-2): 223-227, DOI 10.1016/1359-0189(88)90069-6.
- 17. Prescott JR and Hutton JT, 1994. Cosmic ray contribution to dose rates for luminescence and ESR dating: large depths and long-term time variations. Radiation Measurements 23(2-3): 497-500, DOI 10.1016/1350-4487(94)90086-8.
- 18. Roberts HM and Wintle AG, 2001. Equivalent Dose Determinations for Polymineralic Fine-grains Using the SAR Protocol: Application to a Holocene Sequence of the Chinese Loess Plateau. Quaternary Science Reviews 20(5-9): 859-863, DOI 10.1016/S0277-3791(00)00051-2.
- 19. Şengör AMC, Tüysüz O, İmren C, Sakınç M, Eyidoğan H, Görür N, Pichon XL, Rangin C, 2005. The North Anatolian Fault: A New Look. Annual Review Earth Planet Sciences 33: 1-75.
- 20. Strickertsson K, Murray AS and Lykke-Andersen H, 2001. Optically Stimulated Luminescence Dates for Late Pleistocene Sediments from Stensnæs, Northern Jutland, Denmark. Quaternary Science Reviews 20(5-9): 755-759, DOI 10.1016/S0277-3791(00)00056-1.
- 21. Wallinga J, Murray AS, Duller GAT and Tornqvist TE, 2001. Testing Optically Stimulated Luminescence Dating of Sandsized Quartz and Feldspar from Fluvial Deposits. Earth and Planetary Science Letters 193(3-4): 617-630, DOI 10.1016/S0012-821X(01)00526-X.
- 22. Wallinga J, Murray AS and Bøtter-Jensen L, 2002. Measurement of the dose in quartz in the presence of feldspar contamination. Radiation Protection Dosimetry 101(1): 367-370.
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Bibliografia
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