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  • Print publication year: 2019
  • Online publication date: August 2019

7 - Deformation Bands

Summary

Deformation bands are a common and important type of tabular geologic structural discontinuity that results from strain localization in porous granular rocks (e.g., Aydin et al., 2006; Fossen et al., 2007). First recognized in sandstone (e.g., Aydin, 1978; Aydin and Johnson, 1978; Hill, 1989), they were subsequently identified in other porous rock types including carbonate grainstones (Tondi et al., 2006), nonwelded tuffs (Wilson et al., 2003; Evans and Bradbury, 2004), chalk (Wennberg et al., 2013), and even sedimentary sequences on Mars (Okubo et al., 2009). Similar structures, sometimes called Lüders’ bands (e.g., Friedman and Logan, 1973; Olsson, 2000), have been noted and investigated in engineering materials such as polystyrene plastic (Argon et al., 1968; Bowden and Raha, 1970; Kramer, 1974) and mild steel (Nadai, 1950, p. 279) long before deformation bands were recognized as such in rocks (Aydin, 1978).