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The unique geomorphology and physical properties of the Vestalia Terra plateau

Buczkowski, D.L. and Wyrick, D.Y. and Toplis, M. and Yingst, R.A. and Williams, D.A. and Garry, W.B. and Mest, S. and Kneissl, T. and Scully, J.E.C. and Nathues, A. and De Sanctis, M.C. and Le Corre, L. and Reddy, V. and Hoffmann, M. and Ammannito, E. and Frigeri, A. and Tosi, F. and Preusker, Frank and Roatsch, Thomas and Raymond, C.A. and Jaumann, R. and Pieters, C.M. and Russell, C.T. (2014) The unique geomorphology and physical properties of the Vestalia Terra plateau. Icarus, 244, 89 - 103. Elsevier. DOI: 10.1016/j.icarus.2014.03.035 ISSN 0019-1035

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Official URL: http://www.sciencedirect.com/science/article/pii/S0019103514001614

Abstract

Abstract We produced a geologic map of the Av-9 Numisia quadrangle of asteroid Vesta using Dawn spacecraft data to serve as a tool to understand the geologic relations of surface features in this region. These features include the plateau Vestalia Terra, a hill named Brumalia Tholus, and an unusual “dark ribbon” material crossing the majority of the map area. Stratigraphic relations suggest that Vestalia Terra is one of the oldest features on Vesta, despite a model crater age date similar to that of much of the surface of the asteroid. Cornelia, Numisia and Drusilla craters reveal bright and dark material in their walls, and both Cornelia and Numisia have smooth and pitted terrains on their floors suggestive of the release of volatiles during or shortly after the impacts that formed these craters. Cornelia, Fabia and Teia craters have extensive bright ejecta lobes. While diogenitic material has been identified in association with the bright Teia and Fabia ejecta, hydroxyl has been detected in the dark material within Cornelia, Numisia and Drusilla. Three large pit crater chains appear in the map area, with an orientation similar to the equatorial troughs that cut the majority of Vesta. Analysis of these features has led to several interpretations of the geological history of the region. Vestalia Terra appears to be mechanically stronger than the rest of Vesta. Brumalia Tholus may be the surface representation of a dike-fed laccolith. The dark ribbon feature is proposed to represent a long-runout ejecta flow from Drusilla crater.

Item URL in elib:https://elib.dlr.de/93892/
Document Type:Article
Additional Information:Special Issue: The Geology of Vesta
Title:The unique geomorphology and physical properties of the Vestalia Terra plateau
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Buczkowski, D.L.Johns Hopkins University Applied Physics Laboratory 11100 Johns Hopkins Rd. Laurel, MD 20723-6099, USAUNSPECIFIED
Wyrick, D.Y.SwRI®, San Antonio, Texas, USAUNSPECIFIED
Toplis, M.University of Toulouse, FranceUNSPECIFIED
Yingst, R.A.Planetary Science Institute, 1700 E. Ft. Lowell, Suite 106, Tucson, AZ, 85719, USAUNSPECIFIED
Williams, D.A.Arizona State UniversityUNSPECIFIED
Garry, W.B.Planetary Science Institute, Tucson, AZ, USAUNSPECIFIED
Mest, S.Planetary Science Institute, 1700 E. Ft. Lowell, Suite 106, Tucson, AZ, 85719, USAUNSPECIFIED
Kneissl, T.Freie Universität Berlin, Inst. of Geosciences, Planetology and Remote SensingUNSPECIFIED
Scully, J.E.C.Institute of Geophysics, University of California, Los Angeles, Los Angeles, CA 90095UNSPECIFIED
Nathues, A.Max-Planck Institute for Solar System Research, Katlenburg-Lindau, GermanyUNSPECIFIED
De Sanctis, M.C.Istituto Nazionale di Astrofisica, Rome, Italy.UNSPECIFIED
Le Corre, L.Max Planck Institute for Solar System Research, Max-Planck-Str. 2, Katlenburg-Lindau, 37191, GermanyUNSPECIFIED
Reddy, V.Department of Space Studies, University of North Dakota, Grand Forks, ND 58202, USAUNSPECIFIED
Hoffmann, M.Max Planck Institute for Solar System Research , Katlenburg-Lindau, GermanyUNSPECIFIED
Ammannito, E.INAF, Istituto di Fisica Dello Spazio Interplanetario, Roma, ItalyUNSPECIFIED
Frigeri, A.National Institute of Astrophysics, Rome, ItalyUNSPECIFIED
Tosi, F.INAF-IASF Istituto di Astrofisica Spaziale e Fisica Cosmica, Roma ItalyUNSPECIFIED
Preusker, Frankfrank.preusker (at) dlr.deUNSPECIFIED
Roatsch, Thomasthomas.roatsch (at) dlr.deUNSPECIFIED
Raymond, C.A.Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109-8099, USAUNSPECIFIED
Jaumann, R.ralf.jaumann (at) dlr.deUNSPECIFIED
Pieters, C.M.Brown University, Providence, RI, USAUNSPECIFIED
Russell, C.T.Institute of Geophysics, University of California, Los Angeles, Los Angeles, CA 90095UNSPECIFIED
Date:2014
Journal or Publication Title:Icarus
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:244
DOI :10.1016/j.icarus.2014.03.035
Page Range:89 - 103
Publisher:Elsevier
ISSN:0019-1035
Status:Published
Keywords:Impact Processes
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
Deposited By: Krohn, Dr.rer.nat Katrin
Deposited On:18 Dec 2014 13:23
Last Modified:06 Sep 2019 15:26

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