naa a22 4500 510808700 CHVBK 20180411083431.0 cr unu---uuuuu 180411e20130901xx s 000 0 eng 10.1007/s12542-012-0162-0 doi (NATIONALLICENCE)springer-10.1007/s12542-012-0162-0 A microstructure study on silicified wood from the Permian Petrified Forest of Chemnitz [Elektronische Daten] [Dagmar Dietrich, Thomas Lampke, Ronny Rößler] Three typical plant taxa from the fossil assemblage of the 290-million-year-old Chemnitz Petrified Forest (Zeisigwald Tuff Horizon, Leukersdorf Formation) were studied with regard to the microstructure of the petrifactions: samples of the tree fern Psaronius sp., the seed fern Medullosa stellata, and the gymnosperm Dadoxylon sp. The plant's tissues are anatomically preserved by silica exhibiting different crystalline order and by other mineralisations. Specimens were studied by means of electron backscatter imaging and electron backscatter diffraction in a scanning electron microscope. The cell walls were largely preserved by quartz crystals, the cell lumina by cryptocrystalline silica. The former organisation and chemical composition of the vascular tissue are mirrored by varying grain formation and grain size. Results are discussed in terms of extant xylem cell wall organisation showing highly hydrophilic cellulose and hemicellulose cross-linked by hydrophobic lignin. The effect of polar and non-polar wood components on the precipitation of silica from aqueous solution and on the formation of crystals is convincing, and the reported results provide a better understanding of how silica replaced organic matter during the petrifaction process. Springer-Verlag Berlin Heidelberg, 2013 Petrified wood nationallicence Dadoxylon sp nationallicence Medullosa stellata nationallicence Psaronius sp nationallicence Electron backscatter diffraction (EBSD) nationallicence Plant cell-wall structure nationallicence Kieselhölzer nationallicence Psaronius sp nationallicence Medullosa stellata nationallicence Dadoxylon sp nationallicence Electron backscatter diffraction (EBSD) nationallicence Wandaufbau der Pflanzenzelle nationallicence Dietrich Dagmar Institute of Materials Science and Engineering, Chemnitz University of Technology, 09107, Chemnitz, Germany aut Lampke Thomas Institute of Materials Science and Engineering, Chemnitz University of Technology, 09107, Chemnitz, Germany aut Rößler Ronny Museum für Naturkunde, Moritzstraße 20, 09111, Chemnitz, Germany aut Paläontologische Zeitschrift Springer Berlin Heidelberg 87/3(2013-09-01), 397-407 0031-0220 87:3<397 2013 87 12542 https://doi.org/10.1007/s12542-012-0162-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12542-012-0162-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Dietrich Dagmar Institute of Materials Science and Engineering, Chemnitz University of Technology, 09107, Chemnitz, Germany aut NATIONALLICENCE 700 1- Lampke Thomas Institute of Materials Science and Engineering, Chemnitz University of Technology, 09107, Chemnitz, Germany aut NATIONALLICENCE 700 1- Rößler Ronny Museum für Naturkunde, Moritzstraße 20, 09111, Chemnitz, Germany aut NATIONALLICENCE 773 0- Paläontologische Zeitschrift Springer Berlin Heidelberg 87/3(2013-09-01), 397-407 0031-0220 87:3<397 2013 87 12542 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer