Supporting information for paper published in Environmental Science and Technology (2009) Sulfur fixation in wood mapped by synchrotron X-ray studies: implications for environmental archives Ian J. Fairchild 1* , Neil J. Loader 2 , Peter M. Wynn 1,3 , Silvia Frisia 4 , Peter A. Thomas 5 , Jonathan G.A. Lageard 6 , Anna de Momi 1 , Adam Hartland 1 , Andrea Borsato 7 , Nicola La Porta 8 , and Jean Susini 9 1* School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK. Telephone: +441214144181. Fax: +441214145582. E-mail: i.j.fairchild@bham.ac.uk 2 Department of Geography, Swansea University, Swansea SA2 8PP, UK 3 Department of Geography, University of Lancaster, Lancaster LA1 4YQ, UK 4 School of Environmental and Life Sciences, University of Newcastle, Callaghan, New South Wales, NSW 2308, Australia 5 School of Life Sciences, Keele University, Staffs ST5 5BG, UK 6 Department of Environmental & Geographical Sciences, Manchester Metropolitan University, Chester Street, Manchester M1 5GD, UK 7 Museo Tridentino di Scienze Naturali, Via Calepina 14, Trento 38100, Italy 8 Fondazione Edmund Mach - Istituto Agrario di San Michele all’Adige, Via E. Mach 1, 38010 San Michele all’Adige (TN), Italy 9 European Synchrotron Radiation Facility, F-38043 Grenoble Cedex, France Number of pages: 7 Number of figures: 5