A swarm of small shield volcanoes on Syria Planum, Mars

Ana Rita Baptista, Nicolas Mangold, Véronique Ansan, David Baratoux, Philippe Lognonné, Eduardo I. Alves, David Williams, Jacob E. Bleacher, Philippe Masson, Gerhard Neukum

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

This study focuses on the volcanism in Syria Planum, located at the center of the Tharsis bulge at an altitude of 6 to 8 km above Mars datum. Syria Planum was previously recognized as a center for the tectonic activity of Tharsis, but not as a major locus for volcanic activity, despite its centrality over the bulge. Using high-resolution images from the high resolution stereo camera on Mars Express combined with Mars Observer Laser Altimeter data, we have characterized a volcanic system that reveals a number of very interesting aspects of Mars volcanism. We identified a swarm of tens of coalesced shallow volcanic edifices, typically 10-30 km diameter, 0.1-0.2 km high, and with slopes around 0.5°. These characteristics are similar to those of small shield volcanoes found in Iceland. In addition, an intermediate-sized volcano, which is the source of lava flows that extend over >200 km, is observed west of this shield swarm. Our study characterizes a previously unrecognized volcanic assemblage on Mars which appears to be much more developed than was documented before, in terms of morphology, inferred origin, and periodicity of eruption. The estimated lava flux of the Syria Planum volcanoes is of the same order as the lava flux of Tharsis Montes. These characteristics suggest that Syria Planum experienced a very specific style of volcanism, which we dated to the Hesperian period.

Original languageEnglish (US)
Article numberE09010
JournalJournal of Geophysical Research E: Planets
Volume113
Issue number9
DOIs
StatePublished - Sep 20 2008

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Syria
shield volcano
Volcanoes
Temazepam
bedrock
volcanoes
mars
Mars
volcanology
lava
volcanism
Mars Observer
laser altimeters
Fluxes
Mars Express
volcano
Aneroid altimeters
Iceland
high resolution
Optical resolving power

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geophysics
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science

Cite this

Baptista, A. R., Mangold, N., Ansan, V., Baratoux, D., Lognonné, P., Alves, E. I., ... Neukum, G. (2008). A swarm of small shield volcanoes on Syria Planum, Mars. Journal of Geophysical Research E: Planets, 113(9), [E09010]. https://doi.org/10.1029/2007JE002945

A swarm of small shield volcanoes on Syria Planum, Mars. / Baptista, Ana Rita; Mangold, Nicolas; Ansan, Véronique; Baratoux, David; Lognonné, Philippe; Alves, Eduardo I.; Williams, David; Bleacher, Jacob E.; Masson, Philippe; Neukum, Gerhard.

In: Journal of Geophysical Research E: Planets, Vol. 113, No. 9, E09010, 20.09.2008.

Research output: Contribution to journalArticle

Baptista, AR, Mangold, N, Ansan, V, Baratoux, D, Lognonné, P, Alves, EI, Williams, D, Bleacher, JE, Masson, P & Neukum, G 2008, 'A swarm of small shield volcanoes on Syria Planum, Mars', Journal of Geophysical Research E: Planets, vol. 113, no. 9, E09010. https://doi.org/10.1029/2007JE002945
Baptista AR, Mangold N, Ansan V, Baratoux D, Lognonné P, Alves EI et al. A swarm of small shield volcanoes on Syria Planum, Mars. Journal of Geophysical Research E: Planets. 2008 Sep 20;113(9). E09010. https://doi.org/10.1029/2007JE002945
Baptista, Ana Rita ; Mangold, Nicolas ; Ansan, Véronique ; Baratoux, David ; Lognonné, Philippe ; Alves, Eduardo I. ; Williams, David ; Bleacher, Jacob E. ; Masson, Philippe ; Neukum, Gerhard. / A swarm of small shield volcanoes on Syria Planum, Mars. In: Journal of Geophysical Research E: Planets. 2008 ; Vol. 113, No. 9.
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