Neumann lines
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Neumann lines, or Neumann bands, are fine patterns of parallel lines seen in cross-sections of many hexahedrite iron meteorites in the kamacite phase, although they may appear also in octahedrites provided the kamacite phase is about 30 micrometres wide. They can be seen after a polished meteorite cross-section is treated with acid. The lines are indicative of a shock-induced deformation of the kamacite crystal, and are thought to be due to impact events on the parent body of the meteorite.[1]
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Neumann lines are named after Johann Georg Neumann who discovered them in 1848 in the hexahedrite meteorite which had fallen near Braunau (present-day Broumov, Czech Republic) in 1847.[2][3]
See also
[edit | edit source]References
[edit | edit source]- ^ O. Richard Norton, Rocks from Space, Mountain Press Pub., 1998, Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value)., page 195.
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ J. G. Burke: Cosmic Debris, Meteorites in History. University of California Press, 1986.