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

Unveiling the origin of radial grabens on Alba Patera volcano by finite element modelling

Cailleau, B. and Walter, T. R. and Janle, P. and Hauber, E. (2005) Unveiling the origin of radial grabens on Alba Patera volcano by finite element modelling. Icarus: International Journal of Solar System Studies, 176 (1), pp. 44-56. DOI: 10.1016/j.icarus.2005.01.017 ISSN 0019-1035

Full text not available from this repository.

Abstract

The Tharsis region is an 8000-km-wide structural dome that incorporates a concentration of the main volcanic and tectonic activity on the Planet Mars. The area of structural doming is characterised by giant radial graben-dike systems. Nested on a set of these giant dikes to the northern side of Tharsis, is Alba Patera, one of the largest volcanoes in the planetary system. The regional dikes there are in arcuate arrangement and imply an E W to NW SE regional extension at Alba Patera. To assess the influence of regional and local tectonics, we studied the dike orientations on the volcano with Viking mosaic data and simulated plausible stress fields with finite element modelling. We found that the influence of a NW SE regional extension was strong near the volcano centre but decreased rapidly in importance towards the northern pole, i.e., far from the Tharsis centre. By combining this regional stress with a broad uplift that is due to a buoyancy zone of about 1400 km in lateral extent and centred under Alba Patera, we reproduced the radial pattern of dike swarms that diverge from the Tharsis trend. Regional tectonics may have dominated the early stages of dike injection. During the evolution of Alba Patera, however, local updoming controlled the dike pattern, supporting the idea of a hotspot under Alba Patera. The well-expressed dike geometry and characteristics of Alba Patera provide an ideal example for comparative study with analogue hotspots on Earth where plate tectonics and active erosion may complicate the reconstruction of volcanic and tectonic history and the understanding of involved geodynamic processes.

Item URL in elib:https://elib.dlr.de/18739/
Document Type:Article
Additional Information: LIDO-Berichtsjahr=2005,
Title:Unveiling the origin of radial grabens on Alba Patera volcano by finite element modelling
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Cailleau, B.Institute of Geosciences, Department of Geophysics, Kiel University, KielUNSPECIFIED
Walter, T. R.MGG/RSMAS, University of Miami, Miami, FL, USAUNSPECIFIED
Janle, P.Institute of Geosciences, Department of Geophysics, Kiel University, KielUNSPECIFIED
Hauber, E.UNSPECIFIEDUNSPECIFIED
Date:2005
Journal or Publication Title:Icarus: International Journal of Solar System Studies
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:Yes
Volume:176
DOI :10.1016/j.icarus.2005.01.017
Page Range:pp. 44-56
ISSN:0019-1035
Status:Published
Keywords:Mars, Alba Patera, Tharsis, Hotspot, Tectonics
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 MARS-EXPRESS / HRSC (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research
Deposited By: Pieth, Susanne
Deposited On:09 Oct 2005
Last Modified:14 Jan 2010 19:41

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.