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A comparative study of interior layered deposits on Mars

Sowe, Mariam and Jaumann, Ralf and Neukum, Gerhard (2011) A comparative study of interior layered deposits on Mars. Special Publications / Geological Society London, 356, pp. 281-300. Geological Society of London. doi: 10.1144/SP356.14 . ISSN 0305-8719.

Full text not available from this repository.

Official URL: http://sp.lyellcollection.org/content/356/1/281.abstract

Abstract

Interior layered deposits (ILDs) of the eastern Valles Marineris and adjacent chaos regions were analysed using high-resolution imagery, topography and spectral data in order to detect possible correlations. We find that ILDs are susceptible to erosion and weathering, as proven by their shapes (mesa, buttes), surface structures (pitted, fluted, yardangs), stair-stepped morphologies at different scales, and metre-sized boulders and talus. ILDs bear hydrated sulphates; consequently, we conclude that aqueous conditions dominated during their formation. Subhorizontal layering and parallel bedding of the ILDs could then indicate that deposition took place under low-energy aquatic conditions. Their superposition on chaotic terrain suggests that they are younger than chaotic terrain and, hence, younger than Late Hesperian. For the hydrated ILDs, which show polyhydrated on top of monohydrated sulphates, we think that formation within an evaporative body is not conceivable and we assume instead that a conversion of sulphates by post-formational humidity changes took place. As hydrated ILDs correlate well with rock fragmentation, we suppose that volume changes due to water content are responsible for rock fragmentation. Despite the different ILD settings, the basic conditions during sedimentation and erosion of ILDs could not have varied greatly because comparable mineralogies and morphologies are found among ILDs.

Item URL in elib:https://elib.dlr.de/73844/
Document Type:Article
Title:A comparative study of interior layered deposits on Mars
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Sowe, MariamPlanetary Sciences & Remote Sensing, Institute of Geological Sciences, Free University of Berlin, Malteserstrasse 74-100, 12249 Berlin, GermanyUNSPECIFIED
Jaumann, Ralfralf.jaumann (at) dlr.deUNSPECIFIED
Neukum, GerhardPlanetary Sciences & Remote Sensing, Institute of Geological Sciences, Free University of Berlin, Malteserstrasse 74-100, 12249 Berlin, GermanyUNSPECIFIED
Date:2011
Journal or Publication Title:Special Publications / Geological Society London
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
Volume:356
DOI :10.1144/SP356.14
Page Range:pp. 281-300
Publisher:Geological Society of London
ISSN:0305-8719
Status:Published
Keywords:Mars, Interior layered deposits, hydrated sulphates
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EW - Erforschung des Weltraums
DLR - Research area:Space
DLR - Program:W EW - Erforschung des Weltraums
DLR - Research theme (Project):W - Projekt MARS-EXPRESS / HRSC (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research
Deposited By: Pieth, Susanne
Deposited On:11 Jan 2012 08:26
Last Modified:12 Nov 2013 09:45

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