thorium uranium potassium

Thorium, uranium and potassium concentrations in granites ...

The uranium and thorium content of these older rocks, measured by gamma-ray spectrometry, is more than twice the average for silicic igneous rocks in general. Younger granites of the area also have high concentrations, suggesting that this is a uranium-thorium-rich province.

Determination of uranium, thorium and potassium contents ...

PDF | Uranium, thorium and potassium contents in 16 different rock samples from various sites in Republic of Yemen were determined using three different techniques of analysis: γ-spectrometry ...

Gamma log - SEG Wiki

The Gamma log is used to record the naturally occurring radiation found in the surrounding borehole rocks from three primary isotopes: Potassium-40 (K), Thorium (Th), and Uranium (U) . Clays have the highest concentration of these radioactive isotopes; hence the Gamma log …

Spectral gamma ray logs - PetroWiki

This uranium can produce what appear to be hot sands on a gross gamma ray log. Using the uranium-free gamma ray curve from a spectral tool (CGR, in Schlumberger's mnemonics) can circumvent this problem and improve sand/shale discrimination in such environments. Occasionally, the ratio of thorium to potassium can be exploited in clay typing.

The distribution of thorium, uranium, and potassium in the ...

Th/U ratio versus potassium content of the Mancos sliale. The distribution of thorium, uranium, and potassium in the Mancos shale 1127 the results are listed in Table 3 with the results of six other samples of the overlying sandstone from other localities.

KGS--Geological Log Analysis--The Gamma Ray Log

The thorium, uranium, and potassium curves in Tracks 2 and 3 record the quantities of these elements, which can be used in a more systematic analysis. Spectral gamma-ray log analysis is commonly made on the basis of the thorium-to-potassium (Th/K) ratio; and the thorium-to-uranium (Th/U) ratio

URANIUM-238, THORIUM-232, AND POTASSIUM-40: NATURALLY ...

URANIUM-238, THORIUM-232, AND POTASSIUM-40: NATURALLY OCCURRING BUT DETRIMENTAL. ... Radium: This guy is a silvery-white metal and it is formed by the radioactive decay of uranium and thorium. The most common isotope of radium and the longest lived radium is 226Ra with a half-life of 1,600 years.

SECTION 24: ABUNDANCES OF URANIUM, THORIUM, AND POTASSIUM …

Potassium, on the other hand, is a major element in many rocks, and its concentration is given in any complete chemical analysis. This difference in abundance, by a factor of the order of 10 4, has meant that commonly potassium has been determined by different methods and for different purposes than have uranium and thorium. Determinations of ...

KGS--Geological Log Analysis--Organic Mudstones

Potassium, Uranium, Thorium (KUT) Curves. The Woodford Shale shows slightly higher potassium and slightly lower thorium levels than the Kinderhook Shale, which suggests that it may have a higher illite content. The uranium curve is scaled in ppm and reaches a maximum of about 43 ppm at the top of the Woodford Shale. Since uranium is linked with ...

Natural Decay Series: Uranium, Radium, and Thorium

uranium-238, uranium-234, thorium-230, radium-226, and lead-210 in the case of uranium-238). Each of these sub-series can be considered to represent a new, separate decay series. Understanding the physical and chemical processes associated with materials containing uranium, thorium, and radium is …

Thorium Element Facts - chemicool.com

Berzelius's isolation of thorium from its chloride using potassium was similar to the approach used by Wöhler and Bussy to isolate beryllium in 1828 and by Ørsted to isolate aluminum in 1825. Thorium was discovered to be radioactive by Gerhard Schmidt in 1898 – the first element after uranium …

Uranium - Wikipedia

The long half-life of the isotope uranium-238 (4.51 × 10 9 years) makes it well-suited for use in estimating the age of the earliest igneous rocks and for other types of radiometric dating, including uranium–thorium dating, uranium–lead dating and uranium–uranium dating. Uranium metal is used for X-ray targets in the making of high ...

Potassium, Rubidium, Strontium, Thorium, Uranium, and the ...

abundance ratios of uranium, thorium, and potassium (3, 4). Accordingly, we determined the con-centrations of potassium (1), rubidium, strontium, uranium, and thorium and the ratio, Sr87/Sr86, in samples of oceanic tholeiitic basalts. Some of the concentrations of potassium and rubid-ium have already been reported (2). The samples are from the ...

Spectral Gamma Borehole Logging

Spectral gamma borehole geophysical methods measure natural-gamma energy spectra, which are caused by the decay of uranium, thorium, potassium-40, and anthropogenic radioactive isotopes. Spectral gamma data can be used to identify and quantify the amount of uranium, thorium, and potassium-40 isotopes detected in boreholes.

Crain's Petrophysical Handbook | Clay Minerals - PE-TH/K ...

CLAY MINERALOGY FROM PE-TH/K and DENSITY-UMA: ... If thorium and/or potassium are low, and uranium is high, then the rock is not shale. Other data such as PE, density, and neutron are then used to define the porosity and rock type. However, if thorium or potassium is high, with or without uranium, then some shale should be suspected, and ...

Determination of uranium, thorium and potassium activity ...

INTRODUCTION. Radioactivity of soil environment is one of the main sources of exposure to humans. Hence it is important to know its distribution, gamma radiation from radionuclides which are characterised by half-lives comparable to the age of the earth, such as 40 K and radionuclides from the 238 U and 232 Th series. Their decay products represent the main external source of radiation to the ...

Determination of thorium, uranium and potassium elemental ...

A comprehensive study was conducted to determine thorium, uranium and potassium elemental concentrations in surface soils throughout the accessible area of Cyprus using high-resolution gamma-ray spectrometry. A total of 115 soil samples was collected from all over the bedrock surface of the island based on the different lithological units of the study area.

THE THORIUM, URANIUM, AND POTASSIUM CONTENTS OF …

osti.gov journal article: the thorium, uranium, and potassium contents of atlantic and gulf coast beach sands.

Thorium-232 | chemical isotope | Britannica.com

Other articles where Thorium-232 is discussed: fissile material: the fertile materials uranium-238 and thorium-232, respectively. A fertile material, not itself capable of undergoing fission with low-energy neutrons, is one that decays into fissile material after neutron absorption within a reactor. Thorium-232 and uranium-238 are the only two naturally occurring fertile materials.

Thorium, uranium and potassium abundances in peridotite ...

EARTH AND PLANETARY SCIENCE LETTERS 4 (1968)155-166. NORTH-HOLLAND PUBLISHING COMP., AMSTERDAM THORIUM, URANIUM AND POTASSIUM ABUNDANCES IN PERIDOTITE INCLUSIONS AND THEIR HOST BASALTS D. H. GREEN, J. W. MORGAN * and K. S. HEIER Department of Geophysics and Geochemistry, Australian National University, Canberra Accepted 11 March 1968 The abundances of the radioactive elements uranium, thorium ...

DETERMINATION FOR LEVELS OF RADIONUCLIDES OF …

the dry season while Uranium, Thorium and Potassium were beyond the limit of detection during the wet season The ED-XRF technique showed that 31.40±0.14 ppm of Potassium was present in algae during dry the season. Uranium, Thorium and Potassium were beyond detection limit in the water samples using ED-XRF.

Radiation from Thorium and its Decay Products

Terrestrial radiation refers to sources of radiation that are in the soil, water, and vegetation. The major isotopes of concern for terrestrial radiation are potassium, uranium and the decay products of uranium, such as thorium, radium, and radon.Note that, terrestrial radiation includes an external exposure caused by these radionuclides.

(PDF) Distribution of uranium, thorium and potassium in ...

PDF | Uranium, thorium, potassium and their decay product mass flows were analysed in the Bayer process. Gamma-ray spectroscopy was used to measure …

Potassium, thorium, and uranium contents of ... - osti.gov

@article{osti_4409478, title = {Potassium, thorium, and uranium contents of upper Cenozoic basalts of the southern Rocky Mountain region, and their relation to the Rio Grande Depression}, author = {Lipman, P.W. and Bunker, C.M. and Bush, C.A.}, abstractNote = {Late Cenozoic basaitic volcanism in southern Colorado and northern New Mexico was most iniense near the Rio Grande rift depression but ...

Radioactivity : Potassium 40

Potassium 40 is a radioisotope that can be found in trace amounts in natural potassium, is at the origin of more than half of the human body activity: undergoing between 4 and 5,000 decays every second for an 80kg man. Along with uranium and thorium, potassium contributes to the natural radioactivity of rocks and hence to the Earth heat.

Thorium, uranium and potassium in some sandstones ...

Pergamon Press Ltd., London Thorium, uranium and potassium in some sandstones ELAINE G. MURRAY and JOHN A. S. ADAMS (Received 24 September 1957) Abstracthorium, uranium, and potassium concentrations have been determined in nineteen sands and sandstones by y-ray spectrometry, fluorometric uranium analysis, and a-counting.

URANIUM, THORIUM, AND POTASSIUM IN SOILS ALONG THE …

Thorium, uranium, and potassium concentrations in specific areas near the lake are somewhat higher than average concentrations around the world. Visual inspection of Lake Issyk-Kyol's white, sandy beaches near the towns of Bokonbaevo and Kadji-Sai show a

Determination of thorium, uranium, and potassium elemental ...

Determination of thorium, uranium, and potassium elemental concentrations in surface soils in Cyprus Michalis Tzortzis and Haralabos Tsertos* Department of Physics, University of Cyprus, P.O. Box 20537, 1678 Nicosia, Cyprus. (Revised version: 8/03/2004) Abstract A comprehensive study was conducted to determine thorium, uranium and potassium

Natural Gamma Ray Theory Flashcards | Quizlet

Natural Gamma Ray Theory study guide by yamono56 includes 21 questions covering vocabulary, terms and more. Quizlet flashcards, activities and games help you improve your grades.