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Sequence of infilling events in Gale crater, Mars: Results from morphology, stratigraphy, and mineralogy

Le Deit, L. and Hauber, E. and Fueten, F. and Pondrelli, M. and Rossi, A.P. and Jaumann, R. (2013) Sequence of infilling events in Gale crater, Mars: Results from morphology, stratigraphy, and mineralogy. Journal of Geophysical Research, 118, pp. 1-35. Wiley. doi: 10.1002/2012JE004322. ISSN 0148-0227.

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Gale Crater is filled by sedimentary deposits including a mound of layered deposits, Aeolis Mons. Using orbital data, we mapped the crater infillings and measured their geometry to determine their origin. The sediment of Aeolis Mons is interpreted to be primarily air fall material such as dust, volcanic ash, fine-grained impact products, and possibly snow deposited by settling from the atmosphere, as well as wind-blown sands cemented in the crater center. Unconformity surfaces between the geological units are evidence for depositional hiatuses. Crater floor material deposited around Aeolis Mons and on the crater wall is interpreted to be alluvial and colluvial deposits. Morphologic evidence suggests that a shallow lake existed after the formation of the lowermost part of Aeolis Mons (the Small yardangs unit and the mass-wasting deposits). A suite of several features including patterned ground and possible rock glaciers are suggestive of periglacial processes with a permafrost environment after the first hundreds of thousands of years following its formation, dated to ~3.61 Ga, in the Late Noachian/Early Hesperian. Episodic melting of snow in the crater could have caused the formation of sulfates and clays in Aeolis Mons, the formation of rock glaciers and the incision of deep canyons and valleys along its flanks as well as on the crater wall and rim, and the formation of a lake in the deepest portions of Gale.

Item URL in elib:https://elib.dlr.de/86916/
Document Type:Article
Title:Sequence of infilling events in Gale crater, Mars: Results from morphology, stratigraphy, and mineralogy
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Le Deit, L.Université de Nantes, Laboratoire de Planétologie et GéodynamiqueUNSPECIFIEDUNSPECIFIED
Fueten, F.Department of Earth Sciences, Brock University, St. Catherines, Ontario, CanadaUNSPECIFIEDUNSPECIFIED
Pondrelli, M.International Research School of Planetary Sciences, Univ. d'Annunzio, Pescara, ItalyUNSPECIFIEDUNSPECIFIED
Rossi, A.P.Jacobs University BremenUNSPECIFIEDUNSPECIFIED
Date:December 2013
Journal or Publication Title:Journal of Geophysical Research
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:pp. 1-35
Keywords:Mars; geology; remote sensing
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Space Exploration
DLR - Research theme (Project):R - Projekt MARS-EXPRESS / HRSC (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Planetary Geology
Deposited By: Voigt, Joana
Deposited On:06 Jan 2014 08:53
Last Modified:31 Jul 2019 19:44

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