Skip to main content

ejecta blanket

ejecta blanket The blanket of debris surrounding an impact crater. It is composed of material ejected from the crater during its formation, and is laid down with stratigraphy inverted from that of the bedrock. There is typically a star-shaped distribution of ejecta around the crater rim. In addition to rock fragments excavated from the crater, and melted material, surface material from outside the crater may be incorporated by base surge erosion or excavated by secondary craters caused by large ejected blocks. There is a chaotic size distribution of ejected material. Many Martian craters are surrounded by fluidized ejecta blankets which have flowed across the surface. In contrast, lunar ejecta blankets are due mostly to ballistic sedimentation.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"ejecta blanket." A Dictionary of Earth Sciences. . Encyclopedia.com. 18 Sep. 2018 <http://www.encyclopedia.com>.

"ejecta blanket." A Dictionary of Earth Sciences. . Encyclopedia.com. (September 18, 2018). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/ejecta-blanket

"ejecta blanket." A Dictionary of Earth Sciences. . Retrieved September 18, 2018 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/ejecta-blanket

Learn more about citation styles

Citation styles

Encyclopedia.com gives you the ability to cite reference entries and articles according to common styles from the Modern Language Association (MLA), The Chicago Manual of Style, and the American Psychological Association (APA).

Within the “Cite this article” tool, pick a style to see how all available information looks when formatted according to that style. Then, copy and paste the text into your bibliography or works cited list.

Because each style has its own formatting nuances that evolve over time and not all information is available for every reference entry or article, Encyclopedia.com cannot guarantee each citation it generates. Therefore, it’s best to use Encyclopedia.com citations as a starting point before checking the style against your school or publication’s requirements and the most-recent information available at these sites:

Modern Language Association

http://www.mla.org/style

The Chicago Manual of Style

http://www.chicagomanualofstyle.org/tools_citationguide.html

American Psychological Association

http://apastyle.apa.org/

Notes:
  • Most online reference entries and articles do not have page numbers. Therefore, that information is unavailable for most Encyclopedia.com content. However, the date of retrieval is often important. Refer to each style’s convention regarding the best way to format page numbers and retrieval dates.
  • In addition to the MLA, Chicago, and APA styles, your school, university, publication, or institution may have its own requirements for citations. Therefore, be sure to refer to those guidelines when editing your bibliography or works cited list.