Skip to main content
SpringerLink
Log in

Double-Layer Ejecta

  • Living reference work entry
  • First Online:
Encyclopedia of Planetary Landforms

  • 481 Accesses

Definition

Impact crater ejecta morphology displaying two continuous deposits.

Category

A type of layered ejecta

Synonyms

DLE; Double lobe ejecta; Pedestal crater (Ganymede)

Description/Structural Units

Double-layer ejecta (DLE) craters have been identified on Mars and Ganymede. The inner layer of the DLE morphology is thicker and terminates in a concave scarp. The outer layer is thinner and more extensive, typically terminating in a distal ridge (rampart) (Barlow et al. 2000; Schenk and Ridolfi 2002; Boyce and Mouginis-Mark 2006; Boyce et al. 2010). Martian DLE craters display a strong radial texture of grooves and ridges extending from the crater rim to the edge of the outer layer (Fig. 1). A topographic moat typically occurs just beyond the crater rim. Secondary craters extending beyond the outer ejecta layer are seldom seen (Boyce and Mouginis-Mark 2006).

Fig. 1
figure 1

Double-layer crater Steinheim, Mars at 54.5°N 190.7°E (Boyce et al. 2010). Scale bar 10 km. Mosaic of CTX:...

This is a preview of subscription content, log in via an institution to check access.

Access this chapter

Log in via an institution

Institutional subscriptions

References

  • Abramov O, Kring DA (2005) Impact-induced hydrothermal activity on early Mars. J Geophys Res 110. doi:10.1029/2005JE002453

    Google Scholar 

  • Barlow NG (1994) Sinuosity of Martian rampart ejecta deposits. J Geophys Res 99:10927–10935

    Article  Google Scholar 

  • Barlow NG (2005) A review of Martian impact crater ejecta structures and their implications for target properties. In: Kenkmann T, Hörz F, Deutsch A (eds) Large meteorite impacts III. Geological Society of America special paper 384. Geological Society of America, Boulder, pp 433–442

    Chapter  Google Scholar 

  • Barlow NG (2006) Impact craters in the northern hemisphere of Mars: layered ejecta and central pit characteristics. Meteorit Planet Sci 41:1425–1436

    Article  Google Scholar 

  • Barlow NG, Bradley TL (1990) Martian impact craters: correlations of ejecta and interior morphologies with diameter, latitude, and terrain. Icarus 87:156–179

    Article  Google Scholar 

  • Barlow NG, Perez CB (2003) Martian impact crater ejecta morphologies as indicators of the distribution of subsurface volatiles. J Geophys Res 108. doi:10.1029/2002JE002036

    Google Scholar 

  • Barlow NG, Boyce JM, Costard FM, Craddock RA, Garvin JB, Sakimoto SEH, Kuzmin RO, Roddy DJ, Soderblom LA (2000) Standardizing the nomenclature of Martian impact crater ejecta morphologies. J Geophys Res 105:26,733–26,738

    Article  Google Scholar 

  • Beaty D, 26 colleagues of the MEPAG Special Regions–Science Analysis Group (2006) Findings of the Mars special regions science analysis group. Astrobiology 6:677–732

    Article  Google Scholar 

  • Boyce JM, Mouginis-Mark PJ (2006) Martian craters viewed by the thermal emission imaging system instrument: double-layered ejecta craters. J Geophys Res 111. doi:10.1029/2005JE002638

    Google Scholar 

  • Boyce J, Barlow N, Mouginis-Mark P, Stewart S (2010) Rampart craters on Ganymede: their implications for fluidized ejecta emplacement. Meteorit Planet Sci 45:638–661

    Article  Google Scholar 

  • Horner VM, Greeley R (1982) Pedestal craters on Ganymede. Icarus 51:549–562

    Article  Google Scholar 

  • Jones KB, Head JW III, Pappalardo RT, Moore JM (2003) Morphology and origin of palimpsests on Ganymede based on Galileo observations. Icarus 164:197–212

    Article  Google Scholar 

  • Kenkmann T, Schönian F (2006) Ries and Chicxulub: impact craters on Earth provide insights for Martian ejecta blankets. Meteorit Planet Sci 41:1587–1603

    Article  Google Scholar 

  • Mouginis-Mark P (1979) Martian fluidized crater morphology: variations with crater size, latitude, altitude, and target material. J Geophys Res 84:8011–8022

    Article  Google Scholar 

  • Mouginis-Mark P (1981) Ejecta emplacement and modes of formation of Martian fluidized ejecta craters. Icarus 45:60–76

    Article  Google Scholar 

  • Neal JE, Barlow NG (2004) Layered ejecta craters on Ganymede: comparisons with Martian analogs. Lunar Planet Sci Conf XXXV, abstract #1121, Houston

    Google Scholar 

  • Schenk PM, Ridolfi FJ (2002) Morphology and scaling of ejecta deposits on icy satellites. Geophys Res Lett 29. doi:10.1029/2001GL013512

    Google Scholar 

  • Schenk PM, Chapman CR, Zahnle K, Moore JM (2004) Ages and interiors: the cratering record of the Galilean satellites. In: Bagenal F, Dowling TE, McKinnon WB (eds) Jupiter: the planet, satellites and magnetosphere. Cambridge University Press, Cambridge, pp 427–456

    Google Scholar 

Download references

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
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Nadine G. Barlow .

Rights and permissions

Reprints and permissions

Copyright information

© 2014 Springer Science+Business Media New York

About this entry

Cite this entry

Barlow, N.G. (2014). Double-Layer Ejecta. In: Encyclopedia of Planetary Landforms. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-9213-9_137-2

Download citation

  • DOI: https://doi.org/10.1007/978-1-4614-9213-9_137-2

  • Received:

  • Accepted:

  • Published:

  • 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

Publish with us

Policies and ethics

Search

Navigation