El-Maarry, Mohamed Ramy and Dohm, J.M. and Michael, G. and Thomas, N. and Maruyama, S. (2013) Morphology and evolution of the ejecta of Hale crater in Argyre basin, Mars: results from high resolution mapping. Icarus 226 (1), pp. 905-922. ISSN 0019-1035.
Abstract
We use various data sets, including images from the High Resolution Imaging Science Experiment camera (HiRISE), to examine the ejecta of the generally fresh-looking Hale crater that occurs in the rugged mountain terrain of Nereidum Montes in the northern rim materials of the Argyre impact structure on Mars. Our investigation reveals that the distal parts of the Hale crater ejecta and other basin deposits behave like viscous flows, which we attribute to the secondary flow of ejecta mixed with water–ice-rich basin materials. Consistent with water-enrichment of the basin materials, our mapping further reveals occasionally deformed surfaces, including highly conspicuous features such as mounds and fractured plateaus that we interpret to be a result of periglacial modification, subsequent (including possibly present-day) to the transient localized melting and fluvial erosion caused by Hale-impact-generated heating. In particular, our morphometric analysis of a well-defined valley system west of Hale crater suggests that it may have been formed through hydrologic/glacial activity prior to the Hale impact, with additional modification resulting from the impact and subsequent geologic and hydrologic phenomena including glacial and periglacial activity.
Metadata
| Item Type: | Article |
|---|---|
| Keyword(s) / Subject(s): | Mars, Surface, Impact processes, Geological processes |
| School: | Birkbeck Faculties and Schools > Faculty of Science > School of Natural Sciences |
| Depositing User: | Administrator |
| Date Deposited: | 17 Oct 2018 12:47 |
| Last Modified: | 02 Aug 2023 17:45 |
| URI: | https://eprints.bbk.ac.uk/id/eprint/24707 |
Statistics
Additional statistics are available via IRStats2.
Archive Staff Only (login required)
