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Encyclopedia of Planetary Landforms pp 333–337Cite as

Combination Ejecta

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Definition

Impact crater ejecta pattern which displays a layered ejecta morphology close to the crater rim and secondary crater chains beyond the edge of the layered ejecta deposit.

Category

A type of ejecta, containing both layered ejecta and radial ejecta.

Synonyms

Diverse ejecta; MLERSRd; Radial-lobate ejecta; SLERSRd; Transitional ejecta

Description

The combination ejecta pattern displays components of both layered (fluidized) and radial (dry) ejecta patterns. There is a layered ejected blanket close to the crater rim, beyond which chains of secondary craters can be seen. The secondary craters appear to extend from beneath the outer edge of the layered ejecta deposit and thus appear to be formed prior to the emplacement of the layered ejecta deposit (Barlow et al. 2000). The layered ejecta part of the combination ejecta pattern is typically either a single layer ejecta or multiple layer ejecta morphology. Secondary craters extending beyond the outer layer of the double layer ejecta...

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References

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Author information

Authors and Affiliations

  1. Department of Physics and Astronomy, Northern Arizona University, Flagstaff, AZ, USA

    Nadine G. Barlow

Authors
  1. Nadine G. Barlow
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Corresponding author

Correspondence to Nadine G. Barlow .

Editor information

Editors and Affiliations

  1. NASA Ames Research Center/NPP, Moffett Field, CA, USA

    Henrik Hargitai

  2. Konkoly Thege Miklos Astronomical Institute, Research Centre for Astronomy and Earth Sciences, Budapest, Hungary

    Ákos Kereszturi

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Barlow, N.G. (2015). Combination Ejecta. In: Hargitai, H., Kereszturi, Á. (eds) Encyclopedia of Planetary Landforms. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-3134-3_438

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