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The Ac-5 (Fejokoo) quadrangle of Ceres: Geologic map and geomorphological evidence for ground ice mediated surface processes

Hughson, K. and Russell, C.T. and Williams, D.A. and Buczkowski, D.L. and Mest, S. and Pasckert, J. H. and Scully, J.E.C. and Combe, J. P. and Platz, Thomas and Ruesch, O. and Preusker, Frank and Jaumann, Ralf and Nass, Andrea and Roatsch, Thomas and Nathues, A. and Schaefer, Martin and Schmidt, B. and Chilton, H. and Ermakov, Anton and Singh, S. and McFadden, L.A. and Raymond, C.A. (2018) The Ac-5 (Fejokoo) quadrangle of Ceres: Geologic map and geomorphological evidence for ground ice mediated surface processes. Icarus, 316, pp. 63-83. Elsevier. doi: 10.1016/j.icarus.2017.09.035. ISSN 0019-1035.

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Official URL: https://www.sciencedirect.com/science/article/abs/pii/S0019103516305097


NASA's Dawn spacecraft arrived at Ceres on March 6, 2015, and has been studying the dwarf planet through a series of successively lower orbits. Throughout these mission phases Dawn obtained photographic, mineralogical, elemental abundance, and gravity data. Ceres is the largest object in the asteroid belt with a mean diameter of ∼940 km. The Dawn Science Team conducted a geologic mapping campaign for Ceres similar to the one that was implemented on the asteroid Vesta (Dawn's previous target), including production of a Survey- and High Altitude Mapping Orbit (HAMO)-based global map, and a series of 15 Low Altitude Mapping Orbit (LAMO)-based quadrangle maps. In this paper we present the LAMO-based geologic map of the Ac-5 Fejokoo Quadrangle (21–66°N and 270–360°E) and discuss its implications. The Ac-5 quadrangle is primarily composed of ancient cratered terrain punctuated with several moderately fresh impact craters of geologic interest, six large tholi that are possibly cryovolcanic in origin, and an abundance of flows that well represent the full spectrum of mass wasting features observed on Ceres. The Fejokoo quadrangle hosts the majority of Oxo crater, the site of the first spectroscopic detection of H2O ice on the surface of Ceres. The H2O detection is closely related to two distinctive morphological units interpreted as possible high water ice content landslides. These observations and interpretations are consistent with ground ice mediated surface processes on Ceres.

Item URL in elib:https://elib.dlr.de/125316/
Document Type:Article
Title:The Ac-5 (Fejokoo) quadrangle of Ceres: Geologic map and geomorphological evidence for ground ice mediated surface processes
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Hughson, K.University of California Los AngelesUNSPECIFIEDUNSPECIFIED
Russell, C.T.Institute of Geophysics, University of California, Los Angeles, Los Angeles, CA 90095UNSPECIFIEDUNSPECIFIED
Williams, D.A.Arizona State UniversityUNSPECIFIEDUNSPECIFIED
Buczkowski, D.L.Johns Hopkins University Applied Physics Laboratory 11100 Johns Hopkins Rd. Laurel, MD 20723-6099, USAUNSPECIFIEDUNSPECIFIED
Mest, S.Planetary Science Institute, 1700 E. Ft. Lowell, Suite 106, Tucson, AZ, 85719, USAUNSPECIFIEDUNSPECIFIED
Pasckert, J. H.Institut für Planetologie, Westfälische Wilhelms-Universität Münster, Wilhelm-Klemm-Strasse 10, 48149 Münster, GermanyUNSPECIFIEDUNSPECIFIED
Scully, J.E.C.NASA JPL, California Institute of Technology, Pasadena, CaliforniaUNSPECIFIEDUNSPECIFIED
Combe, J. P.Space Science Inst., Winthrop WA, USA, Lab. de Planetologie et de Geodynamique, U. de Nantes, Nantes, FranceUNSPECIFIEDUNSPECIFIED
Platz, ThomasMax Planck Institut für SonnensystemforschungUNSPECIFIEDUNSPECIFIED
Ruesch, O.NASA Goddard Space Flight CenterUNSPECIFIEDUNSPECIFIED
Jaumann, RalfUNSPECIFIEDhttps://orcid.org/0000-0002-9759-6597UNSPECIFIED
Nathues, A.Max-Planck Institute for Solar System Research, Katlenburg-Lindau, GermanyUNSPECIFIEDUNSPECIFIED
Schmidt, B.Georgia Institute of Technology Main CampusUNSPECIFIEDUNSPECIFIED
Chilton, H.Georgia Institute of TechnologyUNSPECIFIEDUNSPECIFIED
Ermakov, AntonMass. Inst. of Technology, Cambridge, MA, United States.UNSPECIFIEDUNSPECIFIED
McFadden, L.A.NASA Goddard Space Flight Center, Greenbelt, MD 20770UNSPECIFIEDUNSPECIFIED
Raymond, C.A.Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109-8099, USAUNSPECIFIEDUNSPECIFIED
Journal or Publication Title:Icarus
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:pp. 63-83
Keywords:Ceres Dawn Dwarf planet Geologic map Ground ice
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 - Project DAWN (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Planetary Geology
Institute of Planetary Research > Planetary Geodesy
Deposited By: Eckart, Lisa Maria
Deposited On:19 Dec 2018 07:56
Last Modified:06 Sep 2019 15:26

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