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Encyclopedia of Planetary Landforms pp 1Cite as

Ejecta Deposit

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Definition

Ejecta deposit is materials excavated from a crater cavity during impact or erupted from a volcanic vent.

Subtypes

  1. (1)

    Impact crater ejecta deposit: reworked and/or melted crustal materials that are transported beyond the rim of the transient cavity formed directly by the cratering flow field (Osinski et al. 2011) (Ejecta (Impact)):

    1. (1.1)

      Mostly lithic: ejecta (radial ejecta, layered ejecta)

    2. (1.2)

      Melts: impact melt flow, crater outflow (Venus)

  2. (2)

    Volcanic ejecta deposits:

    1. (2.1)

      Lithic and juvenile: pyroclastic deposits, tephra deposits (from plume fallout, Plume deposit (types))

    2. (2.2)

      Juvenile (from magma only): cinder cone (ballistic ejecta)

    3. (2.3)

      Juvenile, liquid: spatter cone (ballistic ejecta)

  3. (3)

    Geyser

Formation

Excavated/erupted material emplaced by ballistic, atmospheric, or aqueous sedimentation.

Composition

Rock and mineral fragments or melts. Impact ejecta is reworked crustal materials, while volcanic ejecta can contain both juvenile and lithic elements.

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Reference

  • Osinski GR, Tornabene LL, Grieve RAF (2011) Impact ejecta emplacement on terrestrial planets. Earth Planet Sci Lett 310:167–181

    Article  Google Scholar 

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Author information

Authors and Affiliations

  1. Planetary Science Research Group, Eötvös Loránd University, Institute of Geography and Earth Sciences, Budapest, Hungary

    Henrik Hargitai

Authors
  1. Henrik Hargitai
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Correspondence to Henrik Hargitai .

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© 2014 Springer Science+Business Media New York

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Cite this entry

Hargitai, H. (2014). Ejecta Deposit. In: Encyclopedia of Planetary Landforms. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-9213-9_648-1

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  • DOI: https://doi.org/10.1007/978-1-4614-9213-9_648-1

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  • Publisher Name: Springer, New York, NY

  • Online ISBN: 978-1-4614-9213-9

  • eBook Packages: Springer Reference Earth and Environm. ScienceReference Module Physical and Materials ScienceReference Module Earth and Environmental Sciences

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