Geochemistry of uranium and thorium and natural radioactivity levels of the western Anatolian plutons, Turkey

Argyrios Papadopoulos; Şafak Altunkaynak; Antonios Koroneos; Alp Ünal; Ömer Kamaci

doi:10.1007/s00710-017-0492-4

Geochemistry of uranium and thorium and natural radioactivity levels of the western Anatolian plutons, Turkey

Argyrios Papadopoulos^*, Şafak Altunkaynak, Antonios Koroneos, Alp Ünal, Ömer Kamaci

^*Corresponding author for this work

Aristotle University of Thessaloniki

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

Seventy samples from major plutons (mainly granitic) of Western Anatolia (Turkey) have been analyzed by γ-ray spectrometry to determine the specific activities of ²³⁸U, ²²⁶Ra, ²³²Th and ⁴⁰K (Bq/kg). Τhe natural radioactivity ranged up to 264 Bq/kg for ²³⁸U, 229.62 Bq/kg for ²²⁶Ra, up to 207.32 Bq/kg for ²³²Th and up to 2541.95 Bq/kg for ⁴⁰K. Any possible relationship between the specific activities of ²²⁶Ra, ²³⁸U, ²³²Th and ⁴⁰K and some characteristics of the studied samples (age, rock-type, colour, grain size, occurrence, chemical and mineralogical composition) was investigated. Age, major and trace element geochemistry, color, pluton location and mineralogical composition are likely to affect the concentrations of the measured radionuclides. The range of the Th/U ratio was large (0.003–11.374). The latter, along with ²²⁶Ra/²³⁸U radioactive secular disequilibrium, is also discussed and explained by magmatic processes during differentiation.

Original language	English
Pages (from-to)	677-691
Number of pages	15
Journal	Mineralogy and Petrology
Volume	111
Issue number	5
DOIs	https://doi.org/10.1007/s00710-017-0492-4
Publication status	Published - 1 Oct 2017

Bibliographical note

Publisher Copyright:
© 2017, Springer-Verlag Wien.

Funding

The authors are grateful to Dr. Sevilay Hacıyakupoğlu, Istanbul Technical University Energy Institute, for the radioactivity measurements. The authors also would like to thank the Associate Editor Prof. Anton Beran, Prof. Altuğ Hasözbek and an anonymous reviewer for their constructive comments that helped to improv significantly the manuscript. This study has been funded by grants from the Istanbul Technical University (BAP Project No: 38664, 37883 and 36010), the Turkish Research Council (TUBITAKCAYDAG-112Y093) and the Research Committee of the Aristotle University of Thessaloniki. The authors are grateful to Dr. Sevilay Hac?yakupo?lu, Istanbul Technical University Energy Institute, for the radioactivity measurements. The authors also would like to thank the Associate Editor Prof. Anton Beran, Prof. Altu? Has?zbek and an anonymous reviewer for their constructive comments that helped to improv significantly the manuscript. This study has been funded by grants from the Istanbul Technical University (BAP Project No: 38664, 37883 and 36010), the Turkish Research Council (TUBITAKCAYDAG-112Y093) and the Research Committee of the Aristotle University of Thessaloniki.

Funders	Funder number
Istanbul Technical University Energy Institute
Turkish Research Council	TUBITAKCAYDAG-112Y093
British Association for Psychopharmacology	37883, 38664, 36010
Research Committee, Aristotle University of Thessaloniki
Istanbul Teknik Üniversitesi

Keywords

Granite
REEs
Thorium
Uranium
Western Anatolia

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1007/s00710-017-0492-4

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abstract = "Seventy samples from major plutons (mainly granitic) of Western Anatolia (Turkey) have been analyzed by γ-ray spectrometry to determine the specific activities of 238U, 226Ra, 232Th and 40K (Bq/kg). Τhe natural radioactivity ranged up to 264 Bq/kg for 238U, 229.62 Bq/kg for 226Ra, up to 207.32 Bq/kg for 232Th and up to 2541.95 Bq/kg for 40K. Any possible relationship between the specific activities of 226Ra, 238U, 232Th and 40K and some characteristics of the studied samples (age, rock-type, colour, grain size, occurrence, chemical and mineralogical composition) was investigated. Age, major and trace element geochemistry, color, pluton location and mineralogical composition are likely to affect the concentrations of the measured radionuclides. The range of the Th/U ratio was large (0.003–11.374). The latter, along with 226Ra/238U radioactive secular disequilibrium, is also discussed and explained by magmatic processes during differentiation.",

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doi = "10.1007/s00710-017-0492-4",

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AU - Kamaci, Ömer

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AB - Seventy samples from major plutons (mainly granitic) of Western Anatolia (Turkey) have been analyzed by γ-ray spectrometry to determine the specific activities of 238U, 226Ra, 232Th and 40K (Bq/kg). Τhe natural radioactivity ranged up to 264 Bq/kg for 238U, 229.62 Bq/kg for 226Ra, up to 207.32 Bq/kg for 232Th and up to 2541.95 Bq/kg for 40K. Any possible relationship between the specific activities of 226Ra, 238U, 232Th and 40K and some characteristics of the studied samples (age, rock-type, colour, grain size, occurrence, chemical and mineralogical composition) was investigated. Age, major and trace element geochemistry, color, pluton location and mineralogical composition are likely to affect the concentrations of the measured radionuclides. The range of the Th/U ratio was large (0.003–11.374). The latter, along with 226Ra/238U radioactive secular disequilibrium, is also discussed and explained by magmatic processes during differentiation.

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Geochemistry of uranium and thorium and natural radioactivity levels of the western Anatolian plutons, Turkey

Abstract

Bibliographical note

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Keywords

UN SDGs

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