Recent geological and hydrological activity on Mars: The Tharsis/Elysium corridor

James M. Dohm, Robert C. Anderson, Nadine G. Barlow, Hirdy Miyamoto, Ashley G. Davies, G. Jeffrey Taylor, Victor R. Baker, William V. Boynton, John Keller, Kris Kerry, Daniel Janes, Alberto G. Fairén, Dirk Schulze-Makuch, Mihaela Glamoclija, Lucia Marinangeli, Gian G. Ori, Robert G. Strom, Jean Pierre Williams, Justin C. Ferris, J. A.P. RodríguezMiguel A. de Pablo, Suniti Karunatillake

Research output: Contribution to journalArticlepeer-review

46 Scopus citations


The paradigm of an ancient warm, wet, and dynamically active Mars, which transitioned into a cold, dry, and internally dead planet, has persisted up until recently despite published Viking-based geologic maps that indicate geologic and hydrologic activity extending into the Late Amazonian epoch. This paradigm is shifting to a water-enriched planet, which may still exhibit internal activity, based on a collection of geologic, hydrologic, topographic, chemical, and elemental evidences obtained by the Viking, Mars Global Surveyor (MGS), Mars Odyssey (MO), Mars Exploration Rovers (MER), and Mars Express (MEx) missions. The evidence includes: (1) stratigraphically young rock materials such as pristine lava flows with few, if any, superposed impact craters; (2) tectonic features that cut stratigraphically young materials; (3) features with possible aqueous origin such as structurally controlled channels that dissect stratigraphically young materials and anastomosing-patterned slope streaks on hillslopes; (4) spatially varying elemental abundances for such elements as hydrogen (H) and chlorine (Cl) recorded in rock materials up to 0.33 m depth; and (5) regions of elevated atmospheric methane. This evidence is pronounced in parts of Tharsis, Elysium, and the region that straddles the two volcanic provinces, collectively referred to here as the Tharsis/Elysium corridor. Based in part on field investigations of Solfatara Crater, Italy, recommended as a suitable terrestrial analog, the Tharsis/Elysium corridor should be considered a prime target for Mars Reconnaissance Orbiter (MRO) investigations and future science-driven exploration to investigate whether Mars is internally and hydrologically active at the present time, and whether the persistence of this activity has resulted in biologic activity.

Original languageEnglish (US)
Pages (from-to)985-1013
Number of pages29
JournalPlanetary and Space Science
Issue number7
StatePublished - May 2008


  • Hydrothermal activity
  • Life
  • Magmatism
  • Mars
  • Present Mars
  • Tectonism

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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