Neumann lines
Neumann lines, or Neumann bands, are fine patterns of parallel lines seen in cross-sections of many hexahedriteiron 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]References
[edit]- ^O. Richard Norton, Rocks from Space, Mountain Press Pub., 1998, ISBN 978-0-87842-373-6, page 195.
- ^Neumann, Johann G. (1849). "Ueber die krystallinische Struktur des Meteoreisens von Braunau". Naturwissenschaftliche Abhandlungen Wien. 3. Wien: 45–56.
- ^J. G. Burke: Cosmic Debris, Meteorites in History. University of California Press, 1986.
