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    Petrograpy of Vigarano Type NWA 5508 Carbonaceous Chondrite
    (Institute of Electrical and Electronics Engineers Inc., 2023) Kamil, C.; Ünsalan, O.; Candan, O.
    Carbonaceous chondrites (CCs) are considered the most primitive materials left over from the early solar system. They are rare and important to further understand the early solar system. Vigarano-type CCs are among the most commonly investigated types of CCs and are very important due to the fact that they bear Calcium-Aluminum refractory inclusions (CAIs). These precious extraterrestrial materials were the first surviving solids to condense out the solar nebula at a time just over 4.5 Ga. Moreover, characterizing their mineralogic compositions and interpreting their possible source bodies are of particular importance, especially in terms of asteroid mining. Here, petrographic and microscopic research on NWA 5508 carbonaceous chondrite with CAI-rich lithology are presented. © 2023 IEEE.
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    A RADIOLOGICAL SURVEY OF THE EGRIGOZ GRANITOID, WESTERN ANATOLIA/TURKEY
    (Oxford Univ Press, 2015) Ozturk, B. Canbaz; Yaprak, G.; Cam, N. F.; Candan, O.
    A radiological survey of the granitoid areas throughout Western Anatolia was conducted during 2007-14. As a part of this radiological survey, this article presents results obtained from Egrigoz pluton, which lies in the northeastern region of Western Anatolia. In the investigated area, the activity measurements of the natural gamma-emitting radionuclides (Ra-226, Th-232 and K-40) in the granitic rock samples and soils have been carried out by means of the NaI(Tl) gamma-ray spectrometry system. The activity concentrations of the relevant natural radionuclides in the granite samples appeared in the ranges as follows: Ra-226, 28-95 Bq kg(-1); Th-232, 50-122 Bq kg(-1) and K-40, 782-1365 Bq kg(-1), while the typical ranges of the Ra-226, Th-232 and K-40 activities in the soil samples were found to be 7-184, 11-174 and 149-1622 Bq kg(-1), respectively. Based on the available data, the radiation hazard parameters associated with the surveyed rocks/soils are calculated. The corresponding absorbed dose rates in air from all those radionuclides were always much lower than 200 nGy h(-1) and did not exceed the typical range of worldwide average values noted in the UNSCEAR (2000) report. Furthermore, the data are also used for the mapping of the surface soil activity of natural radionuclides and the corresponding gamma dose rates of the surveyed area.
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    A RADIOLOGICAL SURVEY OF THE EGRIGOZ GRANITOID, WESTERN ANATOLIA/TURKEY
    (Oxford Univ Press, 2015) Ozturk, B. Canbaz; Yaprak, G.; Cam, N. F.; Candan, O.
    A radiological survey of the granitoid areas throughout Western Anatolia was conducted during 2007-14. As a part of this radiological survey, this article presents results obtained from Egrigoz pluton, which lies in the northeastern region of Western Anatolia. In the investigated area, the activity measurements of the natural gamma-emitting radionuclides (Ra-226, Th-232 and K-40) in the granitic rock samples and soils have been carried out by means of the NaI(Tl) gamma-ray spectrometry system. The activity concentrations of the relevant natural radionuclides in the granite samples appeared in the ranges as follows: Ra-226, 28-95 Bq kg(-1); Th-232, 50-122 Bq kg(-1) and K-40, 782-1365 Bq kg(-1), while the typical ranges of the Ra-226, Th-232 and K-40 activities in the soil samples were found to be 7-184, 11-174 and 149-1622 Bq kg(-1), respectively. Based on the available data, the radiation hazard parameters associated with the surveyed rocks/soils are calculated. The corresponding absorbed dose rates in air from all those radionuclides were always much lower than 200 nGy h(-1) and did not exceed the typical range of worldwide average values noted in the UNSCEAR (2000) report. Furthermore, the data are also used for the mapping of the surface soil activity of natural radionuclides and the corresponding gamma dose rates of the surveyed area.
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    A RADIOLOGICAL SURVEY OF THE EGRIGOZ GRANITOID, WESTERN ANATOLIA/TURKEY
    (Oxford Univ Press, 2015) Ozturk, B. Canbaz; Yaprak, G.; Cam, N. F.; Candan, O.
    A radiological survey of the granitoid areas throughout Western Anatolia was conducted during 2007-14. As a part of this radiological survey, this article presents results obtained from Egrigoz pluton, which lies in the northeastern region of Western Anatolia. In the investigated area, the activity measurements of the natural gamma-emitting radionuclides (Ra-226, Th-232 and K-40) in the granitic rock samples and soils have been carried out by means of the NaI(Tl) gamma-ray spectrometry system. The activity concentrations of the relevant natural radionuclides in the granite samples appeared in the ranges as follows: Ra-226, 28-95 Bq kg(-1); Th-232, 50-122 Bq kg(-1) and K-40, 782-1365 Bq kg(-1), while the typical ranges of the Ra-226, Th-232 and K-40 activities in the soil samples were found to be 7-184, 11-174 and 149-1622 Bq kg(-1), respectively. Based on the available data, the radiation hazard parameters associated with the surveyed rocks/soils are calculated. The corresponding absorbed dose rates in air from all those radionuclides were always much lower than 200 nGy h(-1) and did not exceed the typical range of worldwide average values noted in the UNSCEAR (2000) report. Furthermore, the data are also used for the mapping of the surface soil activity of natural radionuclides and the corresponding gamma dose rates of the surveyed area.