High manganese concentrations in rocks at Gale crater, Mars

Nina L. Lanza, Woodward W. Fischer, Roger C. Wiens, John Grotzinger, Ann M. Ollila, Agnes Cousin, Ryan B. Anderson, Benton C. Clark, Ralf Gellert, Nicolas Mangold, Sylvestre Maurice, Stéphane Le Mouélic, Marion Nachon, Mariek Schmidt, Jeffrey Berger, Samuel M. Clegg, Olivier Forni, Craig Hardgrove, Noureddine Melikechi, Horton E. Newsom & 1 others Violaine Sautter

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

The surface of Mars has long been considered a relatively oxidizing environment, an idea supported by the abundance of ferric iron phases observed there. However, compared to iron, manganese is sensitive only to high redox potential oxidants, and when concentrated in rocks, it provides a more specific redox indicator of aqueous environments. Observations from the ChemCam instrument on the Curiosity rover indicate abundances of manganese in and on some rock targets that are 1-2 orders of magnitude higher than previously observed on Mars, suggesting the presence of an as-yet unidentified manganese-rich phase. These results show that the Martian surface has at some point in time hosted much more highly oxidizing conditions than has previously been recognized.

Original languageEnglish (US)
Pages (from-to)5755-5763
Number of pages9
JournalGeophysical Research Letters
Volume41
Issue number16
DOIs
StatePublished - Aug 28 2014

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Mars craters
crater
manganese
Mars
rocks
mars
rock
iron
redox potential
oxidant

ASJC Scopus subject areas

  • Geophysics
  • Earth and Planetary Sciences(all)

Cite this

Lanza, N. L., Fischer, W. W., Wiens, R. C., Grotzinger, J., Ollila, A. M., Cousin, A., ... Sautter, V. (2014). High manganese concentrations in rocks at Gale crater, Mars. Geophysical Research Letters, 41(16), 5755-5763. https://doi.org/10.1002/2014GL060329

High manganese concentrations in rocks at Gale crater, Mars. / Lanza, Nina L.; Fischer, Woodward W.; Wiens, Roger C.; Grotzinger, John; Ollila, Ann M.; Cousin, Agnes; Anderson, Ryan B.; Clark, Benton C.; Gellert, Ralf; Mangold, Nicolas; Maurice, Sylvestre; Le Mouélic, Stéphane; Nachon, Marion; Schmidt, Mariek; Berger, Jeffrey; Clegg, Samuel M.; Forni, Olivier; Hardgrove, Craig; Melikechi, Noureddine; Newsom, Horton E.; Sautter, Violaine.

In: Geophysical Research Letters, Vol. 41, No. 16, 28.08.2014, p. 5755-5763.

Research output: Contribution to journalArticle

Lanza, NL, Fischer, WW, Wiens, RC, Grotzinger, J, Ollila, AM, Cousin, A, Anderson, RB, Clark, BC, Gellert, R, Mangold, N, Maurice, S, Le Mouélic, S, Nachon, M, Schmidt, M, Berger, J, Clegg, SM, Forni, O, Hardgrove, C, Melikechi, N, Newsom, HE & Sautter, V 2014, 'High manganese concentrations in rocks at Gale crater, Mars', Geophysical Research Letters, vol. 41, no. 16, pp. 5755-5763. https://doi.org/10.1002/2014GL060329
Lanza NL, Fischer WW, Wiens RC, Grotzinger J, Ollila AM, Cousin A et al. High manganese concentrations in rocks at Gale crater, Mars. Geophysical Research Letters. 2014 Aug 28;41(16):5755-5763. https://doi.org/10.1002/2014GL060329
Lanza, Nina L. ; Fischer, Woodward W. ; Wiens, Roger C. ; Grotzinger, John ; Ollila, Ann M. ; Cousin, Agnes ; Anderson, Ryan B. ; Clark, Benton C. ; Gellert, Ralf ; Mangold, Nicolas ; Maurice, Sylvestre ; Le Mouélic, Stéphane ; Nachon, Marion ; Schmidt, Mariek ; Berger, Jeffrey ; Clegg, Samuel M. ; Forni, Olivier ; Hardgrove, Craig ; Melikechi, Noureddine ; Newsom, Horton E. ; Sautter, Violaine. / High manganese concentrations in rocks at Gale crater, Mars. In: Geophysical Research Letters. 2014 ; Vol. 41, No. 16. pp. 5755-5763.
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