Results 41 to 50 of about 2,282 (168)

Evaluation of elemental concentrations of uranium, thorium and potassium in top soils from Kuwait

Nuclear Engineering and Technology, 2019
Top soil samples across the state of Kuwait numering ninety were collected and analysed using gamma-ray spectrometry, to evaluate the elemental concentration of 238U, 232Th and 40K and their depletion/enrichment. Results of elemental concentration ranges
A.D. Bajoga, A.N. Al-Dabbous, A.S. Abdullahi, N.A. Alazemi, Y.D. Bachama, S.O. Alaswad   +5 more
doaj   +1 more source

Quantifying Lithogenic Inputs to the Southern Ocean Using Long-Lived Thorium Isotopes

Frontiers in Marine Science, 2020
Thorium (Th) isotopes were applied to quantify the supply of lithogenic inputs from the Kerguelen Plateau to the Southern Ocean. The dissolved concentrations of 232Th and 230Th were measured following a novel pre-concentration method using the Nobias ...
Habacuc Pérez-Tribouillier, Habacuc Pérez-Tribouillier, Taryn L. Noble, Ashley T. Townsend, Andrew R. Bowie, Andrew R. Bowie, Zanna Chase   +6 more
doaj   +1 more source

Peixe Zircon as a Quality Control Reference Material in U‐Pb Geochronology by LA‐ICP‐MS

Geostandards and Geoanalytical Research, EarlyView.
Key Points Peixe#0 zircon was characterised for U‐Pb geochronology using CA‐ID‐TIMS, SIMS and a long‐term LA‐ICP‐MS data set. The consistent results establish Peixe#0 as a reference material for U‐Pb quality control. Trace element heterogeneity requires careful, CL‐guided spot selection.
Margareth Sugano Navarro, Erica Martini Tonetto, Elson P. Oliveira, Mauricio Ibañez‐Mejia, Cristina Talavera, Neal J. McNaughton, Jacinta Enzweiler, Michael Wiedenbeck   +7 more
wiley   +1 more source

Multi‐Elemental Analysis for Geographical Tracing of Chickpeas Produced in Nearby Locations Around a Protected Geographical Indication

Plant, Cell &Environment, EarlyView.
ABSTRACT The multi‐elemental profile has repeatedly been proposed as a reliable indicator of the geographical origin of plant‐derived foods, as mineral composition accurately reflects the local soil geochemistry and environmental factors. However, this approach may fail in distinguishing specimens from nearby locations, which are expected to be exposed
Ana Sayago, Raúl González‐Domínguez, Ángeles Fernández‐Recamales   +2 more
wiley   +1 more source

Radiological risk assessment of 238U, 232TH and 40K in the top soils of ahero paddy fields of Kisumu county, Kenya

ITEGAM-JETIA, 2022
A radiological risk assessment of 238U, 232Th and 40K in the top soils of Ahero paddy fields of Kisumu County has been measured using NaI(TI) gamma ray spectroscopy.
Kere Wanyama Mukanda, Michael Nakitare Waswa, Linda Ouma   +2 more
doaj   +1 more source

U/Th Dating of Secondary Carbonate Deposits in Underground Galleries of Fourvière Hill (Lyon, France) Reveals a Water Supply System in Operation From the Roman Period to the Middle Ages

Archaeometry, Volume 68, Issue 2, Page 286-295, April 2026.
ABSTRACT The recent discovery of a water draining structure known as the Antiquaille galleries in Fourvière hill, in the center of Lyon, France (ancient Lugdunum), sheds light on the water drainage system built by the former inhabitants of this area for their water needs.
E. Pons‐Branchu, E. Bernot, E. Bertrand, M. Branchu, I. Caffy, A. Dapoigny, J. P. Dumoulin, S. Gaillot   +7 more
wiley   +1 more source

A Lane consistent optical model potential for nucleon scattering on actinide nuclei with extended coupling

EPJ Web of Conferences, 2016
An extension for odd-A actinides of a previously derived dispersive coupledchannel optical model potential (OMP) for 238U and 232Th nuclei is presented. It is used to fit simultaneously all the available experimental databases including neutron strength ...
Quesada José Manuel, Capote Roberto, Soukhovitski Efrem S., Chiba Satoshi   +3 more
doaj   +1 more source

Neoarchean Arc Magmatism and Crust Recycling in the Northern Marginal Zone of the Limpopo Complex, Zimbabwe: New Insights From Zircon U‐Pb‐Hf Isotopes of a Charnockite Suite

Geological Journal, Volume 61, Issue 3, Page 566-592, March 2026.
Charnockites with 2691–2607 Ma magmatic ages from the NMZ show arc‐magmatic geochemical signatures. They correspond to the lower‐crustal equivalent of the Chilimanzi Suite Granite in the Zimbabwe Craton. Lu‐Hf isotopic data of magmatic zircons show negative εHf(t) values (−11.18 to −2.20) with TDMC ages of 3699–3158 Ma, suggesting their protolith ...
Toshiaki Tsunogae, Md. Sazzadur Rahman, Gao Pin, M. Santosh, Wataru Fujisaki, Sam Uthup, Prince Mandingaisa   +6 more
wiley   +1 more source

Geochemical distributions of natural radionuclides in surface soils and sediments impacted by lead-zinc mining activity

Ecotoxicology and Environmental Safety, 2023
This study investigated the distribution features of uranium-238 (238U), radium-226 (226Ra), thorium-232 (232Th), and potassium-40 (40K) and evaluated the associated environmental radiological hazards of the topsoil and river sediments in the Jinding ...
Qiugui Wang, Hai Wang, Yujun Ma, Jinlong Wang, Weigang Su, Enzong Xiao, Jinzhou Du, Tangfu Xiao, Qiangqiang Zhong   +8 more
doaj   +1 more source

Eocene Tectonic Change in the South Pacific Caused Exhumation of the Transantarctic Mountains in Northern Victoria Land, Antarctica

New Zealand Journal of Geology and Geophysics, Volume 69, Issue 1, March 2026.
Apatite fission‐track and (U‐Th)/He data indicate rapid exhumation of northern Victoria Land at 40–30 Ma, correlating with opening of Adare Trough at 43–28 Ma. Exhumation was greatest close to the Ross Sea, consistent with other regions of the Transantarctic Mountains.
Rupert Sutherland, Paul Fitzgerald, Nick Mortimer   +2 more
wiley   +1 more source