Origin of the outer layer of Martian low-aspect ratio layered ejecta craters

Boyce, Joseph and Wilson, Lionel and Barlow, Nadine (2015) Origin of the outer layer of Martian low-aspect ratio layered ejecta craters. Icarus, 245. pp. 263-272. ISSN 0019-1035

Full text not available from this repository.

Abstract

Low-aspect ratio layered ejecta (LARLE) craters are one of the most enigmatic types of martian layered ejecta craters. We propose that the extensive outer layer of these craters is produced through the same base surge mechanism as that which produced the base surge deposits generated by near-surface, buried nuclear and high-explosive detonations. However, the LARLE layers have higher aspect ratios compared with base surge deposits from explosion craters, a result of differences in thicknesses of these layers. This characteristics is probably caused by the addition of large amounts of small particles of dust and ice derived from climate-related mantles of snow, ice and dust in the areas where LARLE craters form. These deposits are likely to be quickly stabilized (order of a few days to a few years) from eolian erosion by formation of duricrust produced by diffusion of water vapor out of the deposits.

Item Type: Journal Article
Journal or Publication Title: Icarus
Uncontrolled Keywords: /dk/atira/pure/subjectarea/asjc/1900/1912
Subjects:
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 73346
Deposited By: ep_importer_pure
Deposited On: 18 Jun 2015 05:36
Refereed?: Yes
Published?: Published
Last Modified: 29 Jan 2020 07:46
URI: https://eprints.lancs.ac.uk/id/eprint/73346

Actions (login required)

View Item View Item