The importance of pre-annealing treatment for ESR dating of mollusc shells: A key study for Ismil in Konya closed Basin/Turkey

Gamze Ekici*, Ulku Sayin, Hulya Aydin, Mesut Isik, Sevinc Kapan, Ahmet Demir, Birol Engin, Arif Delikan, Hukmu Orhan, Recep Biyik, Ayhan Ozmen

*Bu çalışma için yazışmadan sorumlu yazar

Araştırma sonucu: Kitap/Rapor/Konferans Bildirisinde BölümKonferans katkısıbilirkişi

1 Atıf (Scopus)

Özet

In this study, Electron Spin Resonance (ESR) spectroscopy is used to determine the geological ages of fossil mollusc shells systematically collected from two different geological splitting at Ismil Location (37.72769°N, 33.17781°E) in eastern part of Konya. According to the assessment of obtained ESR ages, the importance of pre-annealing treatment emphasize in the case of g=2.0007 dating signal is overlapped with the other signals arisen from short lived radicals that cause the wrong age calculation. To overcome this problem, the samples are pre-annealed at 180°C for 16 minutes and, in this case ESR ages are re-calculated for g=1.9973 dating signal. Dose response curves are obtained using 1.9973 signals after pre-annealing treatments for each samples. ESR ages of samples are obtained in the range of 138 ± 38 ka and 132 ± 30 ka (Upper Pleistocene) according to the Early Uranium Uptake model and the results are in good agreement with the estimated ages from stratigraphic and paleontological correlation by geologists. Thus, it is suggested that especially in the case of 2.0007 dating signal cannot been used due to superimposition case, the signal with 1.9973 g value can be used for dating after pre-annealing treatment. The results reports the first ESR ages on shells collected from Ismil Location and highlight the importance of pre-annealing treatment. This study is supported by TUBITAK 114Y237 research project.

Orijinal dilİngilizce
Ana bilgisayar yayını başlığıTurkish Physical Society 33rd International Physics Congress, TPS 2017
EditörlerArzu Cilli, Baki Akkus, Feyza Guzelcimen, Yesim Oktem, Gulfem Susoy Dogan
YayınlayanAmerican Institute of Physics Inc.
ISBN (Elektronik)9780735416277
DOI'lar
Yayın durumuYayınlandı - 27 Şub 2018
Harici olarak yayınlandıEvet
EtkinlikTurkish Physical Society 33rd International Physics Congress, TPS 2017 - Konacik-Bodrum, Turkey
Süre: 6 Eyl 201710 Eyl 2017

Yayın serisi

AdıAIP Conference Proceedings
Hacim1935
ISSN (Basılı)0094-243X
ISSN (Elektronik)1551-7616

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???event.eventtypes.event.conference???Turkish Physical Society 33rd International Physics Congress, TPS 2017
Ülke/BölgeTurkey
ŞehirKonacik-Bodrum
Periyot6/09/1710/09/17

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Publisher Copyright:
© 2018 Author(s).

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