elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Large-scale troughs on Vesta: A signature of planetary tectonics

Buczkowski, D. L. and Wyrick, D. Y. and Iyer, K. A. and Kahn, E. G. and Scully, J. E. C. and Gaskell, R. W. and Roatsch, Thomas and Preusker, Frank and Schenk, P. M. and Le Corre, L. and Reddy, V. and Yingst, R. A. and Mest, S. and Williams, D. A. and Garry, W. B. and Barnouin, O. S. and Jaumann, Ralf and Raymond, C. A. and Russell, C. T. (2012) Large-scale troughs on Vesta: A signature of planetary tectonics. Geophysical Research Letters, 39, pp. 18205-18210. Wiley. DOI: 10.1029/2012GL052959

Full text not available from this repository.

Abstract

Images of Vesta taken by the Dawn spacecraft reveal large-scale linear structural features on the surface of the asteroid. We evaluate the morphology of the Vesta structures to determine what processes caused them to form and what implications this has for the history of Vesta as a planetary body. The dimensions and shape of these features suggest that they are graben similar to those observed on terrestrial planets, not fractures or grooves such as are found on smaller asteroids. As graben, their vertical displacement versus length relationship could be evaluated to describe and interpret the evolution of the component faults. Linear structures are commonly observed on smaller asteroids and their formation has been tied to impact events. While the orientation of the large-scale Vesta structures does imply that their formation is related to the impact events that formed the Rheasilvia and Veneneia basins, their size and morphology is greatly different from impact-formed fractures on the smaller bodies. This is consistent with new analyses that suggest that Vesta is fully differentiated, with a mantle and core. We suggest that impactinto a differentiated asteroid such as Vesta could result in graben, while grooves and fractures would form on undifferentiated asteroids.

Item URL in elib:https://elib.dlr.de/77246/
Document Type:Article
Title:Large-scale troughs on Vesta: A signature of planetary tectonics
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Buczkowski, D. L. JHU-APLUNSPECIFIED
Wyrick, D. Y. SWRI, San AntonioUNSPECIFIED
Iyer, K. A.JHU-APLUNSPECIFIED
Kahn, E. G. JHU-APLUNSPECIFIED
Scully, J. E. C.UCLAUNSPECIFIED
Gaskell, R. W.PSI, TucsonUNSPECIFIED
Roatsch, Thomasthomas.roatsch (at) dlr.deUNSPECIFIED
Preusker, Frankfrank.preusker (at) dlr.deUNSPECIFIED
Schenk, P. M.LPI, HoustonUNSPECIFIED
Le Corre, L.MPS LindauUNSPECIFIED
Reddy, V.MPS LindauUNSPECIFIED
Yingst, R. A.PSI TucsonUNSPECIFIED
Mest, S.PSI TucsonUNSPECIFIED
Williams, D. A.ASU, TempeUNSPECIFIED
Garry, W. B.PSI, TucsonUNSPECIFIED
Barnouin, O. S.JHU-APLUNSPECIFIED
Jaumann, Ralfralf.jaumann (at) dlr.deUNSPECIFIED
Raymond, C. A.Carol.A.Raymond (at) jpl.nasa.govUNSPECIFIED
Russell, C. T.ctrussel (at) igpp.ucla.eduUNSPECIFIED
Date:2012
Journal or Publication Title:Geophysical Research Letters
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:39
DOI :10.1029/2012GL052959
Page Range:pp. 18205-18210
Publisher:Wiley
Status:Published
Keywords:Asteorids, Vesta, Dawn
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EW - Erforschung des Weltraums
DLR - Research area:Space
DLR - Program:W EW - Erforschung des Weltraums
DLR - Research theme (Project):W - Projekt DAWN (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Planetary Geology
Deposited By: Roatsch, Dr.rer.nat. Thomas
Deposited On:19 Sep 2012 09:03
Last Modified:08 Mar 2018 18:29

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.