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MARTIAN CRATER EJECTA: DECOUPLING CRATER AGE AND EJECTA PRESERVATION

Authors
Type
Published Article
Journal
2014 GSA Annual Meeting in Vancouver, British Columbia
Publication Date
Oct 21, 2014
Source
SETI Institute
License
Unknown

Abstract

The characteristics of pristine impact crater ejecta are not well understood, but stand as an important baseline for better understanding impact processes. It is generally accepted that on airless bodies, most ejecta blanket material is emplaced radially by ballistic transport. This process, however, does not account for all ejecta facies, such as melt-bearing deposits that occur atop ejecta. On Mars, craters often exhibit" fluidized" or" layered" ejecta (possibly due to interactions with sub-surface volatiles and/or the atmosphere) in addition to ballistic ...

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