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Floor-Fractured Craters on Mars: Observations and Origin

Bamberg, M. and Jaumann, R. and Asche, H. and Kneissl, T. and Michael, G. (2014) Floor-Fractured Craters on Mars: Observations and Origin. Planetary and Space Science, 98, pp. 146-162. Elsevier. doi: 10.1016/j.pss.2013.09.017. ISSN 0032-0633.

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Floor-Fractured Craters (FFCs) represent an impact crater type, where the infilling is separated by cracks into knobs of different sizes and shapes. This work focuses on the possible processes which form FFCs to understand the relationship between location and geological environment. We generated a global distribution map using new High Resolution Stereo Camera and Context Camera images. Four hundred and twenty-one potential FFCs have been identified on Mars. A strong link exists among floor fracturing, chaotic terrain, outflow channels and the dichotomy boundary. However, FFCs are also found in the Martian highlands. Additionally, two very diverse craters are used as a case study and we compared them regarding appearance of the surface units, chronology and geological processes. Five potential models of floor fracturing are presented and discussed here. The analyses suggest an origin due to volcanic activity, groundwater migration or tensile stresses. Also subsurface ice reservoirs and tectonic activity are taken into account. Furthermore, the origin of fracturing differs according to the location on Mars.

Item URL in elib:https://elib.dlr.de/86915/
Document Type:Article
Title:Floor-Fractured Craters on Mars: Observations and Origin
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Asche, H.Universität Potsdam, Institut für GeographieUNSPECIFIEDUNSPECIFIED
Kneissl, T.Freie Universität Berlin, Inst. of Geosciences, Planetology and Remote SensingUNSPECIFIEDUNSPECIFIED
Michael, G.Institute of Geosciences, Freie Universität Berlin, Berlin , GermanyUNSPECIFIEDUNSPECIFIED
Journal or Publication Title:Planetary and Space Science
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:pp. 146-162
Keywords:Distribution; Volcanic activity; Fluvial processes; Infilling; Polygons; Tectonic
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 09:08
Last Modified:21 Nov 2023 14:01

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