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Rozprawy doktorskie na temat „Loess”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 25 lipca 2025

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1

Meng, Xing Min. "Loess and loess instability in north China." Thesis, Royal Holloway, University of London, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.300925.

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2

Meszner, Sascha. "Loess from Saxony." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-209462.

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A number of studies have been published in the last few decades on Pleistocene palaeo-temperature reconstruction based on isotopic studies on deep sea cores and ice core records from Greenland. Such temporal high-resolution data represents northern hemispheric circulations and has to be reconfirmed through the study of terrestrial archives in order to recognise the character of such fluctuations in different regions. Loess-palaeosol sequences (LPSs) are suitable to interpret them as palaeoenvironmental archives, because loess is a widely distributed terrestrial deposit and is datable using lum

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3

Tong, Yanan. "Nitrogen loss assessment and environmental consequences in the loess soil of China /." Umeå : Dept. of Forest Ecology, Swedish Univ. of Agricultural Sciences, 2003. http://epsilon.slu.se/s284.pdf.

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4

Muñoz-Castelblanco, José. "Comportement hydromécanique d'un loess naturel." Phd thesis, Université Paris-Est, 2011. http://pastel.archives-ouvertes.fr/pastel-00647891.

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Ce mémoire de thèse est consacré à l'étude expérimentale du comportement hydromécanique d'un lœss naturel non saturé effondrable provenant d'un site proche de la ville de Bapaume (nord de la France) dans une zone où des problèmes de tassement le long de la ligne nord du TGV ont été attribués à l'effondrement du lœss, du fait d'infiltrations d'eau. Un nouvel appareil triaxial permettant de mesurer localement l'ensemble des caractéristiques du loess non saturé (déformation, teneur en eau et succion) a été développé. La courbe de rétention d'eau, déterminée à l'aide d'un tensiomètre de haute capa

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5

Lai, ZhongPing. "Luminescence dating of Chinese loess." Thesis, University of Oxford, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.419053.

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6

Eyre, John Kelday. "Magnetic mineralogy of Chinese loess." Thesis, University of Liverpool, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.386783.

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7

Langroudi, Arya Assadi. "Micromechanics of collapse in loess." Thesis, University of Birmingham, 2014. http://etheses.bham.ac.uk//id/eprint/5284/.

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Soil collapse is amongst one of the most significant ground related hazards. A collapsible soil, in particular loess, typically has an open-structure and collapse occurs when as a consequence of the addition of water and/or load the particles rearrange to form a more dense fabric. Collapse leads to a suite of problems for buildings and infrastructures built on or in collapsing soil. Treatment to mitigate collapse often involves in densification. However, such approaches have been reported not always effective enough to combat the problem. This stems from a lack of understanding of soils’ geoch

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8

Shen, Chengde. "Beryllium-10 in chinese loess /." [S.l : s.n.], 1986. http://www.ub.unibe.ch/content/bibliotheken_sammlungen/sondersammlungen/dissen_bestellformular/index_ger.html.

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9

Rokosh, Charles Dean. "Stratigraphy and palaeoclimatology of loess of the Loess Plateau, China during the last interglacial-glacial cycle." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/NQ60340.pdf.

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10

Zhao, Xiang. "How does Chinese loess become magnetized?" Thesis, University of Southampton, 2010. https://eprints.soton.ac.uk/336394/.

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11

Assallay, Albashir Mohammed. "Structure and hydrocollapse behaviour of loess." Thesis, Loughborough University, 1998. https://dspace.lboro.ac.uk/2134/11230.

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Loess has a metastable structure and undergoes structural hydrocollapse when loaded and wetted, leading to subsidence and damage of overlying structures, which presents enormous engineering problems in many countries in the world. This problem is a focus of much research on both the nature of the phenomenon and the means. of overcoming its negative consequences. However, there remains a need for fundamental experimental and theoretical studies aimed at understanding the many uncertainties involved in the hydrocollapse phenomenon. An experimental programme has been conducted to study the fundam

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12

Lagerbäck, Adolphi Emma. "Optically Stimulated Luminescence Dating and Last Glacial Climate Reconstruction from the Lingtai Loess Section, Chinese Loess Plateau." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-296666.

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High resolution dating of loess on the Chinese Loess Plateau (CLP) using Optically Stimulated Luminescence (OSL) has increased the understanding of past monsoon climate but also raised questions regarding dust mass accumulation rate (MAR), the presence of disturbances or gaps in the sediment record, a possible teleconnection between North Atlantic and East Asian monsoon climate, and whether these events are due to climate variability, local settings, or age model uncertainties. This study undertakes a detailed (<20cm sampling resolution) -OSL investigation of the Lingtai section to create a

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13

Li, Bin M. Arch Massachusetts Institute of Technology. "Earth to Earth : reconciling earthen dwellings with eroding loess landform : the case of Loess Plateau in China." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/91292.

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Thesis: M. Arch., Massachusetts Institute of Technology, Department of Architecture, 2014.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (page 124).<br>Ten percent of the earth's land surface area is covered with loess deposits, a type of highly erodible soil consisting of less than 20% clay. Loess soil has topped eroding hills and valleys and supported an earthen construction tradition in loess

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14

Tehrani, B. H. "Chemical stabilisation of Whaka Terrace loess, Christchurch." Thesis, University of Canterbury. Engineering Geology, 1988. http://hdl.handle.net/10092/6705.

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The dispersive and erodible nature of some loess soils on the Port Hills results in a variety of mass movement, surface and sub-surface erosion features. These features produce engineering problems for residential development, and chemical stabilisation techniques have been used to reduce and/or prevent further erosion by rendering the soils non-dispersive and non erodible. Field and laboratory investigations were undertaken to characterise the dispersive and erodible nature of Whaka Terrace subdivision loess, as well as to assess changes in chemistry and mineralogy of the chemically stabilis

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15

Unruh, Ana Luise. "Lead and hafnium isotopic studies of Eurasian loess." Thesis, University of Oxford, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.365301.

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16

Wright, Janet S. "Non-glacial origins of loess-sized quartz silt." Thesis, Queen's University Belfast, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.333850.

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17

Farnsworth, Dustin Alan. "Establishing restoration baselines for the Loess Hills region." [Ames, Iowa : Iowa State University], 2009. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1473203.

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18

Peng, Rong, and 彭蓉. "Erosion in the Loess Plateau : scales and silos of the grain to green project, 1999-2003." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2014. http://hdl.handle.net/10722/207139.

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This thesis explores the relationship between environmental restoration and social-economic factors. It focuses on the erosion treatment on the Loess Plateau, especially the Grain to Green Project (GGP), the biggest national-range environmental treatment program in China in recent years. GGP produced significant impact on local landform, landuse and livelihood. On one hand, the program effectively controlled torrent by increasing soil aggregation; on the other hand, it lacked long-term perspectives and had underestimated the complexity of the environment and of local residents. The thesis see

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19

Zhou, Li-Ping. "Thermoluminescence dating and environmental magnetism of loess from China." Thesis, University of Cambridge, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.239183.

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20

Glassey, P. J. "Geotechnical properties of lime stabilised loess, Port Hills, Canterbury." Thesis, University of Canterbury. Geology, 1986. http://hdl.handle.net/10092/6701.

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The loess deposits of the Port Hills, Canterbury, are subject to erosion by natural processes. Urban development of the Port Hills has encountered difficulties due to loess erosion, and in some instances, contributed to erosion. Lime stabilisation is one remedial method that can be used to reduce erosion problems. This necessitates investigation of the changes to soil properties and strength gains that occur to the loess with the addition of lime. An erodible loess colluvium, from a subdivision with a history of erosion problems, was stabilised with 1%, 2.5%, 5%, 7.5%, and 10% hydrated lime,

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21

Harrison, Justin Andrew Lavelle. "Filtration of Port Hills loess for retaining wall situations." Thesis, University of Canterbury. Geological Science, 1999. http://hdl.handle.net/10092/9362.

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A series of laboratory tests have been conducted with Port Hills loess from the Ahuriri quarry. Tests have been conducted to obtain a theoretical basis for suggestions of good design practice for retaining wall filtration/drainage systems. The study has concentrated on investigation of geotextiles as filtration options, with granular filters being tested for comparison. Two of the tests (stage 1 test and gradient ratio test) are designed to provide comparative information on filter performance with specific soil types. The third test is a series of three laboratory scale retaining wall simulat

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22

Hughes, Terrence Jon. "A detailed study of Banks Peninsula loess shear strength." Thesis, University of Canterbury. Geology, 2002. http://hdl.handle.net/10092/10021.

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This thesis project has examined the moisture dependency of shear strength in the loess soils of Banks Peninsula. These dominant silt materials are generally regarded as having an angle of internal friction between 25 and 30°, and cohesion of zero, when the soil is saturated. However, soil behaviour in terms of slope stability would appear to support a cohesion value higher than zero as vertical cliffs of loess can be seen to stand indefinitely. It is agreed that loess soils upon saturation do show very low shear strengths, but these soils rarely become saturated due to their low permeability

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23

Zhou, Yuefeng, and 周跃峰. "Study on landslides in loess slope due to infiltration." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B48199394.

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In this thesis, the mechanism of landslides in loess slope is studied based on a field test in association with laboratory tests and numerical modeling. The field test was carried out in the Heifangtai Plateau in China. Heifangtai belongs to semiarid monsoonal with scarce precipitation. Therefore, agricultural irrigation is the major source of water infiltration for the loess slopes in Heifangtai. The test site was selected at the crest of a steep loess slope with developed cracks, covered by more than 40m loess layer. Ground investigation, including lithological composition, groundwat

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24

Butcher, Geoffrey David Hamilton. "The magnetic fabric and depositional environments of loess deposits." Thesis, University of Southampton, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.303506.

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25

Gaita, Hanna. "Central-Eastern European Loess Sources : Central- och östeuropeiska lössursprung." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-412415.

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Climate change is today one of our highest priority challenges. But to understand the change in climate and to be able to make predictions about the future, knowledge about past climate is of substantial importance. The key archive of past climate change can be studied through loess deposits. This paper examines loess sources in Europe and how deposits can tell us about different origins through different geochemical techniques and methods. Secondary data of loess deposits and sources over Central-Eastern Europe have been collected and examined in order to test some of the possible major du

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26

Jacobson, Rebecca. "Investigation into the Loess-Palaeosol and Red Clay Record from the Pliocene- Quaternary Chinese Loess Plateau Using In-Phase and Out-OfPhase Magnetic Susceptibility." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-352266.

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Loess is a well sorted, fine grained, windblown (aeolian) sediment and deposits as a blanket over large areas, reaching from a few centimetres to several hundreds of meters in height and can drape large landscapes in form of mountains. During a more humid and warmer climate, redox conditions are changed in the loess deposits, with greater seasonal moisture creating greater soil formation (pedogenesis), i.e. palaeosol. The Chinese Loess Plateau is dominated by the East Asian monsoon climate, and consists of an alternating Loess-palaeosol Formation, spanning back to at least the whole Quaternar

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27

Goldwater, Stefan. "Slope Failure in Loess. A detailed investigation Allandale, Banks Peninsula." Thesis, University of Canterbury. Geology, 1990. http://hdl.handle.net/10092/9378.

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This study investigates a slope failure complex in loess at Allandale, Lyttelton Harbour. Literature relevant to the slope stability and strength of Banks Peninsula loessial soils is reviewed. Laboratory and in situ strength testing shows that both C and P layer loess in a partially saturated state displays a significant reduction in undrained shear strength with increasing degree of saturation. Strength reduction can be attributed to reduced pore water tension due to capillary suction which results from an increased degree of saturation. The moisture controlled strength component in partially

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28

Wacha, Lara [Verfasser]. "Luminescence dating of loess from the island of Susak in the Northern Adriatic Sea and the "Gorjanović loess section" from Vukovar in eastern Croatia / Lara Wacha." Berlin : Freie Universität Berlin, 2011. http://d-nb.info/1025490126/34.

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Lemos, Gabriel Bruno de. "Precificação de derivativos climáticos no Brasil: uma abordagem estatística alternativa e construção de um algoritmo em R." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/11/11134/tde-07042014-172230/.

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Muitos negócios possuem exposição às variações climáticas e com poucas alternativas para mitigar este tipo de risco. Nos últimos 20 anos o mercado de derivativos climáticos se desenvolveu principalmente em locais como Canadá, EUA e Europa para transferir os riscos relacionados às variações climáticas para investidores com maior capacidade de absorção, tais como seguradoras, resseguradoras e fundos de investimentos. Este trabalho implementou uma metodologia de precificação destes contratos para a variável temperatura média diária no Brasil. Foram utilizados os dados de 265 estações meteorológic

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30

Cacy, Cynthia. "Chemical weathering in a loess-mantled landscape, the Matanuska Valley, Alaska." Diss., Connect to online resource, 2006. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1435238.

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Young, Fred J. "Spatial variability of soil properties within a loess-covered, upland landscape /." free to MU campus, to others for purchase, 1996. http://wwwlib.umi.com/cr/mo/fullcit?p9823319.

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Parker, Eleanor Jane. "An assessment of environmental magnetics and particle size distribution analysis as proxies for variations in the intensity of the East Asian monsoon." Thesis, University of Liverpool, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.366651.

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Jowett, T. W. D. "An investigation of the geotechnical properties of loess from Canterbury and Marlborough." Thesis, University of Canterbury. Engineering Geology, 1995. http://hdl.handle.net/10092/7580.

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Tunnel gully erosion is common in the loess deposits of the South Island of New Zealand. The loess deposits found on the Wither Hills (Marlborough) and Port Hills (Banks Peninsula) are prone to extensive tunnel gully erosion which has caused significant damage in both rural and urban areas. However, the loess deposits found on the Timaru Downs (South Canterbury) and the hills surrounding Akaroa (Banks Peninsula) are significantly less affected. Geotechnical tests including pinhole erosion, uniaxial expansion, crumb test and dispersion % were carried out to determine the erosive and dispersive

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34

Reyna, Teresa María. "Acoplamiento de los procesos de escurrimiento superficial e infiltración." Doctoral thesis, Universidad Nacional de Córdoba.Facultad de Ciencias Exactas, Físicas y Naturales, 2008. http://hdl.handle.net/11086/779.

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Tesis (DCI)--FCEFN-UNC, 2008<br>Plantea la implementación de una nueva metodología alternativa a las existentes que permita obtener en forma simultánea el hidrograma de escurrimiento superficial e infiltración que genere además, curvas de perfiles de la humedad del suelo. Desarrolla un programa (NETRAIN 3.0) para el cálculo de la infiltración a través de datos de campo medidos

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35

Dibben, Susan. "A microstructural model for collapsing soils." Thesis, Nottingham Trent University, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266820.

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Saif, Hakeem Thamir. "Factors influencing base saturation and Ca/Mg ratios in soils of southeastern Ohio /." The Ohio State University, 1986. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487266362337536.

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Lagerbäck, Adolphi Emma. "Characterization of Weathering Effects in Holocene Loess and Paleosol, Kluane Lake, Yukon, Canada." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-225849.

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When measuring weathering intensity of paleosols there arevarious methods and ratios that can be used. This studyexamines several weathering indicators too see which are bestapplied and most effective on loess and paleosols from Yukon,Canada. This region today is considered sub-arctic, but duringpast time this area and its soils has been characterized byglaciations and interglaciations. These changes are the origin ofthe unweathered Kluane loess and the weathered Slims Soilthat are analyzed in the study. Methods used to determine themost sensitive weathering indicator was; CIA (the ChemicalInd

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38

Mamyrova, Raushan [Verfasser], and Joachim [Akademischer Betreuer] Stahlmann. "Possible failure mechanisms of landslides in loess deposits / Raushan Mamyrova ; Betreuer: Joachim Stahlmann." Braunschweig : Technische Universität Braunschweig, 2012. http://d-nb.info/1175823988/34.

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Rodin, Borne Linnéa. "Grain-Size Analysis of Loess Deposits of the Last Glacial Period, NW France." Thesis, Uppsala universitet, Luft-, vatten- och landskapslära, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-445911.

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Loess is an unique record of the paleoclimate of the Quaternary. Because it is directly deposited from the atmosphere, it can be used as a proxy for wind speed and circulation patterns. It can also be directly dated using luminescence. The site of the loess being investigated for this paper is PrimelTrégastel (Brittany), which lies in north-western France of the shore to the English Channel. The English Channel may be one of the sources for loess of the last glaciation, the Wichselian, and is the reason for choosing Primel-Trégastel to investigate. It is the purpose of this paper to investigat

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40

Kronborg, Pelle. "Identifying Quaternary Climate Change with XRF Analysis on Loess From South-Western England." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-412179.

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Huge changes in climate occurred at the end of the last Quaternary glaciation. The end of this glaciation corresponds with the end of Pleistocene with its repeated glacial cycles and the start of the current geological epoch, the Holocene interglacial. The climate at this time was characterized by increasing temperatures and an increase in rainfall. This project focuses on understanding and examining these changes in climate using loess deposits from south-western England. Loess is an aeolian sediment and covers around 10 % of the Earth’s land surface and these deposits are excellent archives

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41

Ramram, Mohammed. "Loess et exemples de dépressions hydroéoliennes dans la basse vallée du Rhône (France)." Aix-Marseille 1, 2008. http://www.theses.fr/2008AIX10016.

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Le but de ce travail est l'étude de plusieurs gisements loessiques. Cette étude porte sur leurs caractères sédimentologiques à travers plusieurs types de dépôts. Les uns épais et localisés comme à Lédenon, Collias, ou la plaine de Gémenos-Aubagne, les autres plus dispersés comme sur la Costière de Nîmes. Cette étude stratigraphique a permis aussi de montrer que certaines accumulations sablo-limoneuses ne sont pas des loess comme une partie des dépôts de la vallée de la Cèze. Enfin, nous avons cherché les zones de déflation qui aurait pu alimenter la sédimentation loessique et nous avons pris c

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42

Meszner, Sascha [Verfasser], Dominik [Akademischer Betreuer] Faust, Ludwig [Gutachter] Zöller, and Pierre [Gutachter] Antoine. "Loess from Saxony : A reconstruction of the Late Pleistocene landscape evolution and palaeoenvironment based on loess-palaeosol sequences from Saxony (Germany) / Sascha Meszner ; Gutachter: Ludwig Zöller, Pierre Antoine ; Betreuer: Dominik Faust." Dresden : Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://d-nb.info/1119362245/34.

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Parks, D. A. "TL dating and geochemistry of brickearths in S.E. England." Thesis, University of Sussex, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.282705.

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44

Rhanor, Thomas. "Topographic Position and Land Cover Effects on Soil Organic Carbon Distribution of Loess-Veneered Hillslopes in the Central United States." OpenSIUC, 2013. https://opensiuc.lib.siu.edu/theses/1260.

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Soil organic carbon (SOC) is important both for its influence on agricultural productivity and for its role in the carbon cycle. The distribution of SOC is highly variable at the field scale both horizontally and vertically; a portion of SOC's variability can be attributed to differences in vegetative cover and to slope position. This study characterized and compared SOC concentration to a depth of 2 meters across 6 loess-veneered watersheds in the central United States. Data were collected as part of the Shawnee Hills Loess Catenas project, a collaboration between the U.S. Department of Agric

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45

Stevens, Thomas. "Late Quaternary climate recorded in Chinese loess : OSL analysis of record continuity and preservation." Thesis, University of Oxford, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.439322.

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46

Vlaminck, Stefan [Verfasser], Martin [Gutachter] Kehl, and Frank [Gutachter] Schäbitz. "Northeastern Iranian loess and its palaeoclimatic implications / Stefan Vlaminck ; Gutachter: Martin Kehl, Frank Schäbitz." Köln : Universitäts- und Stadtbibliothek Köln, 2017. http://d-nb.info/1151298255/34.

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King, Matthew. "Late Quaternary Loess-Paleosol sequences in the Palouse, Northwest USA : pedosedimentary and paleoclimatic significance." Thesis, Royal Holloway, University of London, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.394498.

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Diddams, Hannah. "The nature, distribution and provenance of Loess in South West England and South Wales." Thesis, University of the West of England, Bristol, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.522533.

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Andersson, Hanna. "Reconstructing Weathering and Climate Trends on Loess Deposits in NW France Using XRF Analysis." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-445601.

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Analyzing climate changes by loess sediment deposits formed after the last glacial maximum gives us information about how the environment was dynamically before humans physically could record climate changes. Sampling and analyzing loess from different places in the world give us a more reliable view of when events and changes in climate took place. Loess is a last step eolian transported, fine grained sediment and can be a good record as a Quaternary climate archive (Muhs 2013; Stevens et al. 2020). Loess-paleosol sequences can be used as a relative record for climate change. The paleosols in

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Blinnikov, Mikhail S. "Late-Pleistocene history of the Columbia Basin grassland based on phytolith records in loess /." view abstract or download file of text, 1999. http://wwwlib.umi.com/cr/uoregon/fullcit?p9948017.

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Thesis (Ph. D.)--University of Oregon, 1999.<br>Typescript. Includes vita and abstract. Includes bibliographical references (leaves 202-211). Also available for download from the Internet; free to University of Oregon users. Address: http://wwwlib.umi.com/cr/uoregon/fullcit?p9948017.

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