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Relevant bibliographies by topics / Pb-210 dating method

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Academic literature on the topic 'Pb-210 dating method'

Author: Grafiati

Published: 4 June 2021

Last updated: 4 February 2022

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Journal articles on the topic "Pb-210 dating method"

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Aalto, Rolf, and Charles A. Nittrouer. "210 Pb geochronology of flood events in large tropical river systems." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 370, no. 1966 (2012): 2040–74. http://dx.doi.org/10.1098/rsta.2011.0607.

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Floodplain sedimentation removes particles from fluvial transport and constructs stratigraphic records of flooding, biogeochemical sequestration and other aspects of the environmental history of river basins—insight that is enhanced by accurate geochronology. The natural fallout radionuclide 210 Pb, often employed to date lacustrine and marine sediments, has previously been used to determine floodplain accumulation rates over decadal-to-century time scales using the assumption that both input concentration and sediment accumulation rates are constant. We test this model in approximately 110 co

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Wang, Chaomin, Shugui Hou, Hongxi Pang, et al. "210 Pb dating of the Miaoergou ice core from the eastern Tien Shan, China." Annals of Glaciology 55, no. 66 (2014): 105–10. http://dx.doi.org/10.3189/2014aog66a151.

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AbstractIn 2005, two ice cores with lengths of 58.7 and 57.6 m respectively to bedrock were recovered from the Miaoergou flat-topped glacier (43°03′19″ N, 94°19′21″ E; 4512 m a.s.l.), eastern Tien Shan. 210Pb dating of one of the ice cores (57.6 m) was performed, and an age of AD 1851 ± 6 at a depth of 35.2 mw.e. was determined. For the period AD 1851-2005, a mean annual net accumulation of 229 ± 7 mm w.e. a–1 was calculated. At the nearby oasis city of Hami (~80 km from the Miaoergou flat-topped glacier) the annual precipitation rate is 38 mm w.e. a–1, hence glacial meltwater is a major water

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Waitzinger, Michael, and Fritz Finger. "In-situ U–Th–Pb geochronometry with submicron-scale resolution: low-voltage electron-beam dating of complexly zoned polygenetic uraninite microcrystals." Geologica Carpathica 69, no. 6 (2018): 558–72. http://dx.doi.org/10.1515/geoca-2018-0033.

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Abstract Complexly zoned microcrystals of uraninite were encountered in orthogneiss from the central Tauern Window in Austria (K1 gneiss, Felbertal scheelite mine) and analysed in-situ for U, Th and Pb with state-of-the-art FE-SEM/EDX techniques. A three times finer spatial resolution was achieved using an acceleration voltage of 8 kV, compared to the classic 15–20 kV set-up of U–Th–total Pb electron microprobe dating. The lower voltage allows a spheroid of material with a diameter of only 0.3 µm to be selectively analysed. Careful tests on three uraninite reference materials show that the low

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Sikorski, Jarosław. "A new method for constructing Pb-210 chronology of young peat profiles sampled with low frequency." Geochronometria 46, no. 1 (2019): 1–14. http://dx.doi.org/10.1515/geochr-2015-0101.

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Abstract The paper presents the results of measurements the specific concentration of lead-210 for six peat profiles representing four peat bogs from two regions of Poland and the problem of creating age-depth models. For the construction of age-depth models, it is proposed to use mathematical functions, the best fit to the measured activity. The F-statistics were used as a measure of the match quality. The obtained models are visualized in two ways – showing the age calculated on the basis of direct measurements of activity and indicating points that are the results of the used approximation.

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Sabatier, P., J. L. Reyss, J. M. Hall-Spencer, et al. "<sup>210</sup>Pb-<sup>226</sup>Ra chronology reveals rapid growth rate of <i>Madrepora oculata</I> and <i>Lophelia pertusa</i> on world's largest cold-water coral reef." Biogeosciences Discussions 8, no. 6 (2011): 12247–83. http://dx.doi.org/10.5194/bgd-8-12247-2011.

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Abstract. Here we show the use of the 210Pb-226Ra excess method to determine the growth rate of corals from one of the world's largest known cold-water coral reef, the Røst Reef off Norway. Two large branching framework-forming cold-water coral specimens, one Lophelia pertusa and one Madrepora oculata were collected alive at 350 m water depth from the Røst Reef at ~67° N and ~9° E. Pb and Ra isotopes were measured along the major growth axis of both specimens using low level alpha and gamma spectrometry and the corals trace element compositions were studied using ICP-QMS. Due to the different

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Sabatier, P., J. L. Reyss, J. M. Hall-Spencer, et al. "<sup>210</sup>Pb-<sup>226</sup>Ra chronology reveals rapid growth rate of <i>Madrepora oculata</i> and <i>Lophelia pertusa</i> on world's largest cold-water coral reef." Biogeosciences 9, no. 3 (2012): 1253–65. http://dx.doi.org/10.5194/bg-9-1253-2012.

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Abstract. Here we show the use of the 210Pb-226Ra excess method to determine the growth rate of two corals from the world's largest known cold-water coral reef, Røst Reef, north of the Arctic circle off Norway. Colonies of each of the two species that build the reef, Lophelia pertusa and Madrepora oculata, were collected alive at 350 m depth using a submersible. Pb and Ra isotopes were measured along the major growth axis of both specimens using low level alpha and gamma spectrometry and trace element compositions were studied. 210Pb and 226Ra differ in the way they are incorporated into coral

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Allen, J. R. L., J. E. Rae, G. Longworth, S. E. Hasler, and M. Ivanovich. "A Comparison of the 210 Pb Dating Technique with Three Other Independent Dating Methods in an Oxic Estuarine Salt-Marsh Sequence." Estuaries 16, no. 3 (1993): 670. http://dx.doi.org/10.2307/1352803.

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Seen, Andrew, Ashley Townsend, Bonnie Atkinson, Joanna Ellison, Jennifer Harrison, and Henk Heijnis. "Determining the History and Sources of Contaminants in Sediments in the Tamar Estuary, Tasmania, Using 210Pb Dating and Stable Pb Isotope Analyses." Environmental Chemistry 1, no. 1 (2004): 49. http://dx.doi.org/10.1071/en04011.

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Environmental Context.Dating estuary sediments provides insights into the materials entering the estuary and can pinpoint when the contamination occurred. Heavy metal contamination is a known health risk but attributing it to a source can be contentious. For a sample sourced downstream of a city and a mining region, lead-210 dating and stable lead isotope analyses uncovered the sources of lead inputs. These methods quantified the extent that upstream mining activities and, for the first time, the extent that non-mining inputs (vehicles, industry) contributed to the estuary’s pollution. Abstrac

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Sanders, Luciana M., Kathryn H. Taffs, Debra Stokes, Alex Enrich-Prast, and Christian J. Sanders. "240+239Pu depositional signatures as a viable geochronological tool in the Amazon Basin." Geochronometria 44, no. 1 (2017): 142–49. http://dx.doi.org/10.1515/geochr-2015-0068.

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AbstractAnthropogenic radionuclide signatures associated with nuclear testing are increasingly utilized in environmental science to explore recent sedimentation. In this study, we assess the suitability of Pu radioisotope analysis in floodplain lake environments in the Amazon Basin to form geochronologies during the 20thcentury. The240Pu +239Pu (240+239Pu) signatures in six sediment cores indicate sediment accumulation rates in the floodplain lakes of the major rivers; Amazon (2.3 mm year-1), Tapajos (10.2 and 2.4 mm year-1) and Madeira (3.4, 4.2 and 6.2 mm year-1). The results from this study

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Hung, Tran Trong, Tran Anh Tu, Dang Thuong Huyen, and Marc Desmet. "Presence of trace elements in sediment of Can Gio mangrove forest, Ho Chi Minh city, Vietnam." VIETNAM JOURNAL OF EARTH SCIENCES 41, no. 1 (2019): 21–35. http://dx.doi.org/10.15625/0866-7187/41/1/13543.

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Can Gio mangrove forest (CGM) is located downstream of Ho Chi Minh City (HCMC), situated between an estuarine system of Dong Nai - Sai Gon river and a part of Vam Co river. The CGM is the largest restored mangrove forest in Vietnam and the UNESCO’s Mangrove Biosphere Reserve. The CGM has been gradually facing to numeric challenges of global climate change, environmental degradation and socio-economic development for the last decades. To evaluate sediment quality in the CGM, we collected 13 cores to analyze for sediment grain size, organic matter content, and trace element concentration of Cd,

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Dissertations / Theses on the topic "Pb-210 dating method"

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Santos, Levi Francisco dos. "Caracterização química inorgânica de perfis de sedimento do Pantanal da Nhecolândia - MS, datados pelo método do 210Pb." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/85/85131/tde-15122016-141305/.

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O Pantanal da Nhecolândia, localizado no estado do Mato Grosso do Sul, é parte do Pantanal Brasileiro e possui características específicas, dentre elas a existência de lagos salinos, comumente conhecidos como Salinas. Para se estimar uma possível influência humana no Pantanal da Nhecolândia quatro perfis de sedimento foram coletados, em 2010, nas Salinas A, 6, M e V com o objetivo de se fazer a caracterização química inorgânica dos sedimentos determinando os elementos As, Ba, Ca, Ce, Co, Cr, Cs, Eu, Fe, Hf, K, La, Lu, Na, Nd, Rb, Sb, Sc, Sm, Ta, Tb, Th, U, Yb e Zn pela técnica de análise por a

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