Encyclopedia of Planetary Landforms

2015 Edition
| Editors: Henrik Hargitai, Ákos Kereszturi

Butterfly Ejecta

  • Robert R. Herrick
Reference work entry
DOI: https://doi.org/10.1007/978-1-4614-3134-3_27

Definition

Impact crater ejecta morphology with an uprange and a downrange forbidden zone.

Category

A type of  ejecta often found in association with an  elliptical crater (oblique impact)

Synonyms

 Asymmetric ejecta;  Bilaterally symmetric ejecta; Downrange and uprange forbidden zone (crater); Fly wing (crater)

Variations in Formation and Modification

  1. (1)
    Dry ejecta crater emplaced solely ballistically (Mercury [Fig. 1], Moon [Fig. 2]).
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References

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  2. Gault DE, Wedekind JA (1978) Experimental studies of oblique impacts. Proc Lunar Planet Sci Conf 9:3843–3875Google Scholar
  3. Herrick RR, Forsberg-Taylor NK (2003) The shape and appearance of craters formed by oblique impact on the Moon and Venus. Meteorit Planet Sci 38(11):1551–1578CrossRefGoogle Scholar
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  9. Schultz PH (1992) Atmospheric effects on ejecta emplacement and crater formation on Venus from Magellan. J Geophys Res 97:16183–16248CrossRefGoogle Scholar
  10. Schultz PH, Anderson RA (1996) Asymmetry of the Manson impact structure: evidence for impact angle and direction. In: Koeberl C, Anderson RR (eds) The Manson impact structure, Iowa: anatomy of an impact crater, vol 302, Special paper. Geological Society of America, Boulder, pp 397–417CrossRefGoogle Scholar
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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  1. 1.Geophysical InstituteUniversity of AlaskaFairbanksUSA