P. R. Becker, E. W. Gunter, C. Schlüter, Y. Shibata, and S. A. Wise, The U.S. National Biomonitoring Specimen Bank and the Marine Environmental Specimen Bank, Journal of Environmental Monitoring, vol.39, issue.3, pp.795-799, 2006.
DOI : 10.1016/J.marpolbul.2005.09.045

URL : https://hal.archives-ouvertes.fr/jpa-00210438

X. Boës and N. Fagel, Impregnation method for detecting annual laminations in sediment cores: An overview, Sedimentary Geology, vol.179, issue.3-4, pp.185-194, 2005.
DOI : 10.1016/j.sedgeo.2005.05.001

X. Boës, N. Piotrowska, and N. Fagel, High-resolution diatom/clay record in Lake Baikal from grey scale, and magnetic susceptibility over Holocene and Termination I, Global and Planetary Change, vol.46, issue.1-4, pp.299-313, 2005.
DOI : 10.1016/j.gloplacha.2004.09.025

E. T. Brown, T. C. Johnson, C. A. Scholz, A. S. Cohen, and J. W. King, Abrupt change in tropical African climate linked to the bipolar seesaw over the past 55,000 years, Geophysical Research Letters, vol.316, issue.4, p.20702, 2007.
DOI : 10.1029/2007GL031240

K. S. Camuti and P. T. Mcguire, Preparation of polished thin sections from poorly consolidated regolith and sediment materials, Sedimentary Geology, vol.128, issue.1-2, pp.171-178, 1999.
DOI : 10.1016/S0037-0738(99)00073-1

C. Caseldine, A. Baker, and W. Barnes, A rapid, non-destructive scanning method for detecting distal tephra layers in peats. The Holocene, pp.635-638, 1999.

F. M. Chambers, Z. Yu, and D. Beilman, this volume) Measurements of humification, bulk density, loss on ignition, total, organic and inorganic carbon in peat: a review, Mires and Peat

A. K. Cheburkin and W. Shotyk, An Energydispersive Miniprobe Multielement Analyzer (EMMA) for direct analysis of Pb and other trace elements in peats, Fresinus Journal of Analytical Chemistry, vol.354, pp.688-691, 1996.

A. K. Cheburkin and W. Shotyk, High-sensitivity XRF analyzer (OLIVIA) using a multi-crystal pyrographite assembly to reduce the continuous background, X-Ray Spectrometry, vol.58, issue.3, pp.145-148, 1999.
DOI : 10.1002/(SICI)1097-4539(199905/06)28:3<145::AID-XRS329>3.0.CO;2-8

A. K. Cheburkin and W. Shotyk, Energy- dispersive XRF spectrometer for Ti determination (TITAN). X-ray Spectrometry, pp.69-72, 2005.
DOI : 10.1002/xrs.766

D. Vleeschouwer, F. Chambers, F. M. Swindles, and G. , Coring and sub-sampling of peatlands for palaeoenvironmental research, Mires and Peat, pp.1-10, 2010.

D. Vleeschouwer, F. Le-roux, G. Shotyk, and W. , Peat as an archive of atmospheric metal pollution: the example of Pb in Europe, pp.20-22, 2010.
URL : https://hal.archives-ouvertes.fr/hal-00526664

D. Vleeschouwer, F. Piotrowska, N. Sikorski, J. Pawlyta, J. Cheburkin et al., Multiproxy evidence of `Little Ice Age' palaeoenvironmental changes in a peat bog from northern Poland, The Holocene, vol.19, issue.4, pp.625-637, 2009.
DOI : 10.1177/0959683609104027

URL : https://hal.archives-ouvertes.fr/hal-00987445

D. Vleeschouwer, F. Van-vliët-lanoé, B. Fagel, and N. , Long term mobilisation of chemical elements in tephra-rich peat (NE Iceland), Applied Geochemistry, vol.23, issue.12, 2008.
DOI : 10.1016/j.apgeochem.2008.10.006

URL : https://hal.archives-ouvertes.fr/insu-00338740

D. Vleeschouwer, F. Van-vliët-lanoé, B. Fagel, N. Richter, T. Boës et al., Development and application of high-resolution petrography on resin-impregnated Holocene peat columns to detect and analyse tephras, cryptotephras, and other materials, Quaternary International, vol.178, issue.1, pp.54-67, 2008.
DOI : 10.1016/j.quaint.2006.12.021

URL : https://hal.archives-ouvertes.fr/insu-00305247

P. Francus, An image-analysis technique to measure grain-size variation in thin sections of soft clastic sediments, Sedimentary Geology, vol.121, issue.3-4, pp.289-298, 1998.
DOI : 10.1016/S0037-0738(98)00078-5

P. Francus, H. Kamb, T. Nakagawa, M. Marshall, E. Brown et al., The potential of high-resolution X-ray fluorescence core scanning: applications in paleolimnology, PAGES News, vol.17, pp.93-96, 2006.

N. Givelet, L. Roux, G. Cheburkin, A. Chen, B. Frank et al., Suggested protocol for collecting, handling and preparing peat cores and peat samples for physical, chemical, mineralogical and isotopic analyses, J. Environ. Monit., vol.4, issue.5, pp.481-492, 2004.
DOI : 10.1039/B401601G

G. H. Haug, K. A. Hughen, D. M. Sigman, L. C. Peterson, and U. Röhl, Southward Migration of the Intertropical Convergence Zone Through the Holocene, Science, vol.293, issue.5533, pp.1304-1308, 2001.
DOI : 10.1126/science.1059725

J. H. Jansen, S. J. Van-der-gaast, B. Koster, and A. J. Vaars, CORTEX, a shipboard XRF-scanner for element analyses in split sediment cores, Marine Geology, vol.151, issue.1-4, pp.143-153, 1998.
DOI : 10.1016/S0025-3227(98)00074-7

H. Kempter and B. Frenzel, The impact of early mining and smelting on the local tropospheric aerosol detected in ombrotrophic peat bogs in the Harz, Water, Air, and Soil Pollution, vol.121, issue.1/4, pp.93-108, 2000.
DOI : 10.1023/A:1005253716497

H. Kempter, M. Görres, and B. Frenzel, Ti and Pb concentrations in rainwater-fed bogs in Europe as indicators of past anthropogenic activities, Water, Air, and Soil Pollution, vol.100, issue.3/4, pp.367-377, 1997.
DOI : 10.1023/A:1018376509985

J. Klaminder, I. Renberg, R. Bindler, and O. Emteryd, Isotopic trends and background fluxes of atmospheric lead in northern Europe: Analyses of three ombrotrophic bogs from south Sweden, Global Biogeochemical Cycles, vol.18, issue.1, pp.1019-1029, 2003.
DOI : 10.1029/2002GB001921

M. Krachler, H. Emons, C. Barbante, G. Cozzi, P. Cescon et al., Inter-method comparison for the determination of antimony and arsenic in peat samples, Analytica Chimica Acta, vol.458, issue.2, pp.387-396, 2002.
DOI : 10.1016/S0003-2670(02)00061-2

M. Krachler, L. Roux, G. Kober, B. Shotyk, and W. , Optimising accuracy and precision of lead isotope measurement (206Pb, 207Pb, 208Pb) in acid digests of peat with ICP-SMS using individual mass discrimination correction, Journal of Analytical Atomic Spectrometry, vol.19, issue.3, pp.354-361, 2004.
DOI : 10.1039/b314956k

M. Krachler, C. Mohl, H. Emons, and W. Shotyk, Influence of digestion procedures on the determination of rare earth elements in peat and plant samples by USN-ICP-MS, Journal of Analytical Atomic Spectrometry, vol.17, issue.8, pp.844-851, 2002.
DOI : 10.1039/b200780k

M. Krachler, W. Shotyk, and H. Emons, Digestion procedures for the determination of antimony and arsenic in small amounts of peat samples by hydride generation???atomic absorption spectrometry, Analytica Chimica Acta, vol.432, issue.2, pp.303-310, 2001.
DOI : 10.1016/S0003-2670(00)01364-7

M. E. Kylander, J. Klaminder, R. Bindler, and D. J. Weiss, Natural lead isotope variations in the atmosphere, Earth and Planetary Science Letters, vol.290, issue.1-2, pp.44-53, 2010.
DOI : 10.1016/j.epsl.2009.11.055

S. Lamoureux, Embedding unfrozen lake sediments for thin section preparation, Journal of Paleolimnology, vol.10, issue.2, pp.141-146, 1994.
DOI : 10.1007/BF00682510

A. F. Lotter and G. Lemcke, Methods for preparing and counting biochemical varves, Boreas, vol.116, issue.2, pp.243-252, 1999.
DOI : 10.1111/j.1502-3885.1999.tb00218.x

A. F. Mackenzie and J. E. Dawson, THE PREPARATION AND STUDY OF THIN SECTIONS OF WET ORGANIC SOILS MATERIALS1, European Journal of Soil Science, vol.44, issue.1, pp.142-144, 1961.
DOI : 10.1111/j.1365-2389.1961.tb00904.x

A. Martínez-cortizas, X. Pontevedra-pombal, E. García-rodeja, J. C. Nóvoa-muñoz, and W. Shotyk, Mercury in a Spanish Peat Bog: Archive of Climate Change and Atmospheric Metal Deposition, Science, vol.284, issue.5416, pp.939-942, 1999.
DOI : 10.1126/science.284.5416.939

T. M. Mighall, P. W. Abrahams, J. P. Grattan, D. Hayes, S. Timberlake et al., Geochemical evidence for atmospheric pollution derived from prehistoric copper mining at Copa Hill, Cwmystwyth, mid-Wales. The Science of the Total Environment, pp.69-80, 2002.

T. M. Mighall, S. Timberlake, D. A. Jenkins, and J. P. Grattan, Using peat bog archives to reconstruct paleopollution and vegetation change during the late Holocene, Evolution and Records of Environmental and Climatic Changes, pp.409-429, 2006.

C. P. Murphy, Thin Section Preparation of Soils and Sediments, p.149, 1986.

M. Novák, S. Emmanuel, M. A. Vile, Y. Erel, A. Véron et al., Origin of Lead in Eight Central European Peat Bogs Determined from Isotope Ratios, Strengths, and Operation Times of Regional Pollution Sources, Environmental Science & Technology, vol.37, issue.3, pp.437-445, 2003.
DOI : 10.1021/es0200387

P. J. Potts, A Handbook of Silicate Rock Analysis, Blackie & Son Limited, p.622, 1987.

R. S. Pugh, P. R. Becker, B. J. Porter, M. B. Ellisor, A. J. Moors et al., Design and Applications of the National Institute of Standards and Technology's (NIST's) Environmental Specimen Banking Programs, Cell Preservation Technology, vol.6, issue.1, pp.59-72, 2008.
DOI : 10.1089/cpt.2007.0517

R. Pusch, Experience from preparation and investigation of clay microstructure, Engineering Geology, vol.54, issue.1-2, pp.187-194, 1999.
DOI : 10.1016/S0013-7952(99)00073-3

S. Rauch, H. F. Hemond, and B. Peucker-ehrenbrink, Recent Changes in Platinum Group Element Concentrations and Osmium Isotopic Composition in Sediments from an Urban Lake, Environmental Science & Technology, vol.38, issue.2, 2004.
DOI : 10.1021/es0347686

S. Rauch, B. Peucker-ehrenbrink, M. E. Kylander, D. J. Weiss, A. Martinez-cortizas et al., Anthropogenic Forcings on the Surficial Osmium Cycle, Environmental Science & Technology, vol.44, issue.3, pp.881-887, 2010.
DOI : 10.1021/es901887f

D. H. Richardson, M. Shore, R. Hartee, and R. M. Richardson, The use of X-ray fluorescence spectrometry for the analysis of plants, especially lichens, employed in biological monitoring. The Science of the Total Environment, pp.97-105, 1995.

T. O. Richter, S. Van-der-gaast, B. Koster, A. Vaars, R. Gieles et al., The Avaatech XRF Core Scanner: technical description and applications to NE Atlantic sediments, New Techniques in Sediment Core Analysis, pp.39-50, 2006.
DOI : 10.1144/GSL.SP.2006.267.01.03

F. Roos-barraclough, W. O. Van-der-knaap, J. F. Van-leeuwen, and W. Shotyk, A Late Glacial and Holocene record of climate and possible modern anthropogenic influences from a Swiss peat humification profile. The Holocene, pp.7-19, 2004.

W. Shotyk, D. Weiss, P. G. Appleby, A. K. Cheburkin, R. Frei et al., History of Atmospheric Lead Deposition Since 12,370&nbsp;14C yr BP from a Peat Bog, Jura Mountains, Switzerland, Science, vol.281, issue.5383, pp.1635-1640, 1998.
DOI : 10.1126/science.281.5383.1635

G. T. Swindles, F. De-vleeschouwer, and G. Plunkett, (this volume) Dating peat profiles using tephra: stratigraphy, geochemistry and chronology. Mires and Peat

H. Takeda, A rapid method for preparing thin sections of soil organic layers, Geoderma, vol.42, issue.2, pp.159-164, 1988.
DOI : 10.1016/0016-7061(88)90031-6

R. Tippkotter and K. Ritz, Evaluation of polyester, epoxy and acrylic resins for suitability in preparation of soil thin sections for in situ biological studies, Geoderma, vol.69, issue.1-2, pp.31-57, 1996.
DOI : 10.1016/0016-7061(95)00041-0

D. J. Weiss, B. Kober, A. Dolgopolova, K. Gallaghera, B. Spiro et al., Accurate and precise Pb isotope ratio measurements in environmental samples by MC-ICP-MS, International Journal of Mass Spectrometry, vol.232, issue.3, pp.205-215, 2004.
DOI : 10.1016/j.ijms.2004.01.005

D. J. Weiss, N. Rausch, T. F. Mason, B. J. Coles, J. J. Wilkinson et al., Atmospheric deposition and isotope biogeochemistry of zinc in ombrotrophic peat, Geochimica et Cosmochimica Acta, vol.71, issue.14, pp.3498-3517, 2007.
DOI : 10.1016/j.gca.2007.04.026

D. J. Weiss, W. Shotyk, J. Schafer, U. Loyall, E. Grollimund et al., Microwave digestion of ancient peat and determination of Pb by voltammetry, Fresenius' Journal of Analytical Chemistry, vol.363, issue.3, pp.300-305, 1999.
DOI : 10.1007/s002160051192

G. J. Weltje and R. Tjallingii, Calibration of XRF core scanners for quantitative geochemical logging of sediment cores: Theory and application, Earth and Planetary Science Letters, vol.274, issue.3-4, pp.423-438, 2008.
DOI : 10.1016/j.epsl.2008.07.054

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