Journal ArticleDOI
Mobility of U-series nuclides during basalt weathering: an example from the Deccan Traps (India)
Nathalie Vigier,Bernard Bourdon,E. Lewin,Bernard Dupré,Simon Turner,Govind J. Chakrapani,P. van Calsteren,Claude J. Allègre +7 more
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TLDR
In this article, the authors measured the U-series disequilibria of the main basaltic rivers from the Deccan Trap region (India) and found that the deformation of carbonates, releasing dissolved U at secular equilibrium, plays a key role in the preferential release of 234U from silicate minerals.About:
This article is published in Chemical Geology.The article was published on 2005-06-15. It has received 76 citations till now. The article focuses on the topics: Deccan Traps & Silicate.read more
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Regolith production rates calculated with uranium-series isotopes at Susquehanna/Shale Hills Critical Zone Observatory
TL;DR: In this paper, the authors measured U-series (U-series) isotopes ( 238 U, 234 U, and 230 Th) in three weathering profiles along a planar hillslope at the Susquehanna/Shale Hills Observatory (SSHO) in central Pennsylvania.
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Uranium-series isotopes in river materials: Insights into the timescales of erosion and sediment transport
TL;DR: The U-series isotope signatures of the suspended and dissolved load of rivers have emerged as an important tool for understanding the processes of erosion and chemical weathering at the scale of a watershed as discussed by the authors.
Journal ArticleDOI
Time scale and conditions of weathering under tropical climate: Study of the Amazon basin with U-series
TL;DR: In this article, the Rio Solimoes/Amazonas (Amazon River) and its major tributaries have been analyzed for U-series nuclides and the results indicate that erosion responds rapidly to highfrequency climatic fluctuations.
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Large-Scale Uranium Contamination of Groundwater Resources in India
Rachel M. Coyte,Ratan C. Jain,Sudhir K. Srivastava,Kailash C. Sharma,Abedalrazq Khalil,Lin Ma,Avner Vengosh +6 more
TL;DR: In this paper, the authors present data on groundwater uranium from 16 Indian states and new data from 324 wells in the states of Rajasthan and Gujarat that show a high prevalence of uranium concentrations above the World Health Organization provisional guideline value of 30 μg/L across India.
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Assessing the role of climate on uranium and lithium isotope behaviour in rivers draining a basaltic terrain
Philip A.E. Pogge von Strandmann,Philip A.E. Pogge von Strandmann,Kevin W. Burton,Kevin W. Burton,Rachael H. James,Rachael H. James,Peter van Calsteren,Sigurður R. Gislason +7 more
TL;DR: In this paper, the authors present a comparison of the behaviour of U and Li isotopes and major and trace element data for the dissolved load, suspended particles and bedload from rivers draining dominantly basaltic catchments on the island of Sao Miguel in the Azores Archipelago.
References
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Global silicate weathering and CO2 consumption rates deduced from the chemistry of large rivers
TL;DR: In this article, newly compiled data on the 60 largest rivers of the world are used to calculate the contribution of main lithologies, rain and atmosphere to river dissolved loads, and the relationship between the chemical weathering rates of silicates and the possible controlling parameters are explored.
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Hydrological changes in the African tropics since the Last Glacial Maximum
TL;DR: Paleohydrological data from the African tropics and subtropics, including lake, groundwater and speleothem records, are reviewed to show how environments and climates from both hemispheres are inter-related.
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Uranium-series disequilibrium: Applications to Earth, Marine, and environmental sciences
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Uranium-series disequilibrium: applications to earth, marine, and environmental sciences. 2. ed
M. Ivanovich,R. S. Harmon +1 more
TL;DR: The phenomenon of radioactivity geochemistry of actinides and their daughters uranium-series desequilibrium applications applications in geochronology chemical procedures spectroscopic methods mass spectrometry and applications to uranium series disequilibrium igneous rocks uranium series mobilization and surface hydrology ground water.
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238U,234U and232Th in seawater
TL;DR: In this article, the authors used isotope dilution mass spectrometers to determine 238U,234U and232Th concentrations in seawater using a 233U236U double spike to correct for instrumental fractionation.