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Geological Society, London, Special Publications; 2007; v. 271; p. 237-249;
DOI: 10.1144/GSL.SP.2007.271.01.23
© 2007 Geological Society of London

Record of decay in rock properties

Texture, spatial and orientation dependence of internal strains in marble: a key to understanding the bowing of marble panels?

Ch. Scheffzük1,2, S. Siegesmund3, D. I. Nikolayev2 & A. Hoffmann3

1 GeoForschungsZentrum Potsdam, Section 5.3, Telegrafenberg, 14473 Potsdam, Germany (e-mail: scheff{at}gfz-potsdam.de)
2 Frank Laboratory of Neutron Physics, JINR Dubna, 141980 Dubna, Russia
3 Geoscience Centre, University Göttingen, Goldschmidtstrasse 3, 37077 Göttingen, Germany

A Carrara marble sample was measured using neutron time-of-flight diffraction on its crystallographic preferred orientation (texture), a strain scan through the sample and strain pole figures to explain the effect of deformation of marble plates. Strong compressional residual strain values of up to {varepsilon} = -1.3 x 10-3 measured with residual strain pole figures in a virgin bulk sample have been found. Obviously, the magnitude of residual strain depends on the sample size. Features of the observed texture pole figures and internal strain pole figures are related to each other by their sample orientations. Texture and residual strain measurements were combined with investigations of thermal expansions under dry and wet conditions in different directions to the main stress direction.





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[Abstract] [PDF]