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A volcanic environment for bedrock diagenesis at Meridiani Planum on Mars

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  • Thomas M. McCollom

    (Center for Astrobiology
    University of Colorado)

  • Brian M. Hynek

    (University of Colorado)

Abstract

The waters ran shallow Surface features at the landing site of Opportunity, the Mars Exploration Rover, have been taken as evidence that liquid water was once abundant on Mars. But two groups now present alternative explanations of the layered structures and mineral compositions of the Meridiani Planum that do not involve a standing body of liquid water. Turbulent flow of rock fragments, salts and ice produced by meterorite impact and deposition of volcanic material followed by reaction with condensed sulphur dioxide- and water-bearing vapours, are offered as alternative explanations for the observations.

Suggested Citation

  • Thomas M. McCollom & Brian M. Hynek, 2005. "A volcanic environment for bedrock diagenesis at Meridiani Planum on Mars," Nature, Nature, vol. 438(7071), pages 1129-1131, December.
  • Handle: RePEc:nat:nature:v:438:y:2005:i:7071:d:10.1038_nature04390
    DOI: 10.1038/nature04390
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