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Ceres' impact craters - relationships between surface composition and geology

Stephan, Katrin and Jaumann, R. and Zambon, F. and Carrozzo, F. G. and Wagner, Roland and Longobardo, A and Palomba, E. and De Sanctis, M.C. and Tosi, F. and Ammannito, E. and Combe, J.-P. and McFadden, L.A. and Krohn, Katrin and Schulzeck, Franziska and von der Gathen, Isabel and Williams, D.A. and Scully, J.E.C. and Schmedemann, N. and Neesemann, Adrian and Roatsch, Thomas and Matz, Klaus-Dieter and Preusker, Frank and Raymond, C.A. and Russell, C.T. (2019) Ceres' impact craters - relationships between surface composition and geology. Icarus: International Journal of Solar System Studies, 318, pp. 56-74. Elsevier. DOI: 10.1016/j.icarus.2017.10.013 ISSN 0019-1035

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Abstract

Impact craters of different geological ages, sizes and morphologies are not only the most obvious surface features on Ceres’ surface. The investigation of their spectral properties in combination with Ceres’ geology and topography reveals not only lateral compositional variations in Ceres’ surface material but also possible stratigraphic differences within Ceres’ crust. Spectral properties of impact craters with different ages do show distinct trends implying variations with increasing exposure duration of the impact material onto Ceres’ surface. Local concentrations of H2O ice and carbonates are associated with the youngest, either recently emplaced or excavated, surface deposits. On the contrary, regionally higher amounts of ammoniated phyllosilicates originate from deeper regions of Ceres’ crust and strengthen the theory of ammonia being a primordial constituent of Ceres. The blue spectral slope, clearly associated with relatively weak absorptions of OH-bearing and/or ammoniated phyllosilicates, is limited to fresh impact material. Either, the blue spectral slope diminishes slowly with increasing geologic age due to space weathering processes, or shortly as a result of gravitation-induced slumping, forming a fine and loosely consolidated regolith.

Item URL in elib:https://elib.dlr.de/116602/
Document Type:Article
Title:Ceres' impact craters - relationships between surface composition and geology
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Stephan, KatrinKatrin.Stephan (at) dlr.deUNSPECIFIED
Jaumann, R.ralf.jaumann (at) dlr.deUNSPECIFIED
Zambon, F.inaf-iaps, via del fosso del cavaliere 100, i-00133 rome, italyUNSPECIFIED
Carrozzo, F. G.inaf-iasf istituto di astrofisica spaziale e fisica cosmica, roma italyUNSPECIFIED
Wagner, RolandRoland.Wagner (at) dlr.deUNSPECIFIED
Longobardo, Ainaf-laps, via del fosso del cavaliere 100, i-00133 rome, italyUNSPECIFIED
Palomba, E.institute for interplanetary space physics - inaf, rome, italyUNSPECIFIED
De Sanctis, M.C.istituto nazionale di astrofisica, rome, italy.UNSPECIFIED
Tosi, F.inaf-iasf istituto di astrofisica spaziale e fisica cosmica, roma italyUNSPECIFIED
Ammannito, E.inaf, istituto di fisica dello spazio interplanetario, roma, italyUNSPECIFIED
Combe, J.-P.bear fight center, a columbus technologies and services inc. affiliate, p.o. box 667, 22 fiddler's road, winthrop, wa 98862, usaUNSPECIFIED
McFadden, L.A.nasa goddard space flight center, greenbelt, md 20770UNSPECIFIED
Krohn, Katrinkatrin.krohn (at) dlr.dehttps://orcid.org/0000-0001-8518-4985
Schulzeck, FranziskaFranziska.Schulzeck (at) dlr.deUNSPECIFIED
von der Gathen, IsabelIsabel.Gathen (at) dlr.deUNSPECIFIED
Williams, D.A.arizona state universityUNSPECIFIED
Scully, J.E.C.nasa jpl, california institute of technology, pasadena, californiaUNSPECIFIED
Schmedemann, N.freie universitaet berlin, inst. of geosciences, planetology and remote sensing, malteserstr. 74, 12249 berlin, germanyUNSPECIFIED
Neesemann, Adrianfu berlinUNSPECIFIED
Roatsch, ThomasThomas.Roatsch (at) dlr.deUNSPECIFIED
Matz, Klaus-Dieterklaus-dieter.matz (at) dlr.deUNSPECIFIED
Preusker, Frankfrank.preusker (at) dlr.deUNSPECIFIED
Raymond, C.A.jet propulsion laboratory, california institute of technology, pasadena, ca 91109-8099, usaUNSPECIFIED
Russell, C.T.institute of geophysics, university of california, los angeles, los angeles, ca 90095UNSPECIFIED
Date:2019
Journal or Publication Title:Icarus: International Journal of Solar System Studies
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:318
DOI :10.1016/j.icarus.2017.10.013
Page Range:pp. 56-74
Publisher:Elsevier
ISSN:0019-1035
Status:Published
Keywords:Ceres, Dawn, surface composition, geology
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Science and Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Erforschung des Weltraums
DLR - Research theme (Project):R - Projekt DAWN
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Planetary Geology
Institute of Planetary Research > Planetary Geodesy
Deposited By: Stephan, Dr.rer.nat. Katrin
Deposited On:05 Dec 2017 12:43
Last Modified:05 Dec 2019 14:46

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