A statistical analysis of exploration geochemical data for uranium

Sarma, D. D.; Koch, George S.

doi:10.1007/bf01035242

Cited by 30 publications

(10 citation statements)

References 10 publications

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“…The CV factor investigates the normality of the distribution of the data. If CV's percentage is less than 100%, the unit exhibits a normal distribution (Sarma & Koch, 1980). When looking at Table 1, the highest CV value is 53.8% indicating the normal distribution of the data.…”

Section: Results and Interpretationmentioning

confidence: 99%

“…In addition to the above statistics, the Skew and Kurtosis values define the symmetry of the data and the distribution shape, which is either flatter or sharper than the normal distribution. For example, if the values of both are outside the range of -2 to +2, significant abnormality is expected in the data indicating that the data have not normal distribution (Sarma & Koch, 1980). TC histogram map shows that Skew is about 4.67 and Kurtosis is 35.1 indicating a significant abnormality in the data.…”

Section: Results and Interpretationmentioning

confidence: 99%

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Radiation map for King Abdulaziz University campus and surrounding areas

Aboud

Alqahtani

Aboelnaga

2019

Journal of Radiation Research and Applied Sciences

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King Abdulaziz University (KAU) buildings are expanded to accept more students and research centers. Many of the new buildings were constructed using granitic rocks as building materials. Granitic rock contains radioactive elements (U, Th, K). These elements by time emit radiation which could affect human health. Surely, radiation dose depends on radioactive element percentage in the rock, open or closed area, radiation period,. .. .. .. .etc. When radiation occurs, gamma rays (or radon gas produced by the decay of U and Th) are detected everywhere causing damage in human body cells when being high. For the above-mentioned reasons, Geohazards Research Center, KAU surveyed the whole university campus and surrounding areas using gamma ray spectrometer in order to map the radioactive elements and estimate the dose rate. Results indicate that most of all university buildings have low dose rate while the new buildings have little high dose rate (3.46 mSv/y). These high values are due to the new granitic building materials covering the walls, floors, columns, ponds of agriculture. As the university staff are not staying their lives within the university, fewer hazards occur, but more safety recommendations should be taken into consideration.

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Section: Results and Interpretationmentioning

confidence: 99%

Section: Results and Interpretationmentioning

confidence: 99%

Radiation map for King Abdulaziz University campus and surrounding areas

Aboud

Alqahtani

Aboelnaga

2019

Journal of Radiation Research and Applied Sciences

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“…The quantitative interpretation of the gamma-ray spectrometry data depends principally upon the fact that, the concentrations of the radioelements (eU, eTh and K) vary measurably and significantly with lithology [18]. In the present study, the quantitative analysis of the different gamma-ray spectrometry measurements is discussed on light of some simple statistical treatment to the original data without applying any transformation, in accordance with the recommendation given by [19]. The statistical parameters are represented by the calculated mean value (X), standard deviation (S), coefficient of variability (CV) as well as determination of the minimum and Figure 2.…”

Section: Quantitative Interpretationmentioning

confidence: 98%

Gamma-Ray Spectrometry and Induced Polarization Studies for El Atshan-II Uranium Prospect Area, Central Eastern Desert, Egypt

Assran¹,

Elsayed²,

Ghazala³

et al. 2014

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Gamma-ray spectrometry and induced polarization (IP) studies were carried out to determine the radioactive anomalous zones and to follow their lateral and vertical extensions in El Atshan-II uranium prospect area, central Eastern Desert, Egypt. This area and its surroundings are covered by different Precambrian basement rocks, which intruded by younger bostonite rock, andesite dykes and carbonate veins. Data of the gamma-ray spectrometry have been analyzed qualitatively and quantitatively by applying specific interpretation techniques. These data revealed a wide radioactivity range oscillating from 15.0 to 2362.0 Ur, 0.5 to 307.2 ppm, 0.1 to 55.1 ppm and 0.3 to 22.0% for the total count (Tc), equivalent uranium (eU), equivalent thorium (eTh) and potassium (K), respectively. The constructed radioelement concentration maps and eU-composite image of the study area showed that the anomalously high radioactivity levels are mainly associated with outcrops of the bostonite rock. The induced polarization data were mathematically inverted to produce the true resistivity and chargeability values of cross-sections below the surveyed lines traverse in the area. The resistivity values are varied both vertically and horizontally from 7.83 to more than 1042.0 ohm•m, while the chargeability values are ranged from 0.195 to more than 204.0 mV/V, suggesting variation of the rocks facies and mineralizations. Integration of the resistivity and chargeability data indicates the presence of some mineralized zones, mainly associated with the bostonite rock, with depths varied from the near-surface to more than 70 m. Therefore, a core drilling is recommended at some stations along three selected profiles to a depth of 70-100 m to test the depth, structural model and grade of mineralization in the area.

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“…and coefficient of variability (CV %) which check the normality of each rock unit (CV % = (S.D./X) *100). According to Sarma and Koch (1980), if the (CV %) of a specific rock unit is less than 100%, the unit tends to exhibit a normal distribution. The data treated.…”

Section: Quantitative Interpretationmentioning

confidence: 99%

Airborne gamma-ray spectrometric data interpretation on Wadi Queih and Wadi Safaga area, Central Eastern Desert, Egypt

El-Qassas

Salaheldin

Assran

et al. 2020

NRIAG Journal of Astronomy and Geophysics

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Wadi Queih and Wadi Safaga lie in the central part of the Eastern Desert of Egypt. The airborne gamma-ray spectrometric data of the study area have been interpreted qualitatively and quantitatively and correlated with the surface lithologic units to define the anomalous uranium zones and to reveal if any association is present between the radiometric anomalies and the structural trends.The radiometric data have been treated statistically. The results revealed that the area has a wide range of radioactivity ranging from 0.1 to 23.6 Ur for the total-count (TC), 0.1 to 3.3 % for potassium (K), 0.01 to 19.1 ppm for equivalent uranium (eU), and 0.29 to 18.9 ppm for equivalent thorium (eTh). The calculated CV values for all the rock units in the study area are less than 100% for three radio-elements (K, eU, eTh), except for potassium in Thebes Formation. The younger granites and Duwi Formation have the highest radiometric values. The lowest values exist over ophiolitic metagabbro, basic metavolcanics, metasediments, serpentinites, and Umm Gheig Formation. The generated composite radioelements and composite image maps define the locations of the high anomalous radiometric and eU zones as bright white areas. The most radioactive anomalies have NW-SE and NE-SW trends. ARTICLE HISTORY

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A statistical analysis of exploration geochemical data for uranium

Cited by 30 publications

References 10 publications

Radiation map for King Abdulaziz University campus and surrounding areas

Radiation map for King Abdulaziz University campus and surrounding areas

Gamma-Ray Spectrometry and Induced Polarization Studies for El Atshan-II Uranium Prospect Area, Central Eastern Desert, Egypt

Airborne gamma-ray spectrometric data interpretation on Wadi Queih and Wadi Safaga area, Central Eastern Desert, Egypt

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