Sedimentary textures formed by aqueous processes, Erebus crater Meridiani Planum, Mars

J. Grotzinger, III Bell, K. Herkenhoff, J. Johnson, A. Knoll, E. McCartney, S. McLennan, J. Metz, J. Moore, S. Squyres, R. Sullivan, O. Ahronson, R. Arvidson, B. Joliff, M. Golombek, K. Lewis, T. Parker, J. Soderblom

Research output: Contribution to journalArticlepeer-review

61 Scopus citations

Abstract

New observations at Erebus crater (Olympia outcrop) by the Mars Exploration Rover Opportunity between sols 671 and 735 (a sol is a martian day) indicate that a diverse suite of primary and penecontemporaneous sedimentary structures is preserved in sulfate-rich bedrock. Centimeter-scale trough (festoon) cross-lamination is abundant, and is better expressed and thicker than previously described examples. Postdepositional shrinkage cracks in the same outcrop are interpreted to have formed in response to desiccation. Considered collectively, this suite of sedimentary structures provides strong support for the involvement of liquid water during accumulation of sedimentary rocks at Meridiani Planum.

Original languageEnglish (US)
Pages (from-to)1085-1088
Number of pages4
JournalGeology
Volume34
Issue number12
DOIs
StatePublished - Dec 2006
Externally publishedYes

Keywords

  • Cross-lamination
  • Mars
  • Sedimentary structures
  • Shrinkage cracks
  • Water

ASJC Scopus subject areas

  • Geology

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