In situ detection of boron by ChemCam on Mars - Archive ouverte HAL Access content directly
Journal Articles Geophysical Research Letters Year : 2017

In situ detection of boron by ChemCam on Mars

, , , , , , , , , , , (1) , , , , ,
1
Patrick J. Gasda
  • Function : Author
Ethan B. Haldeman
  • Function : Author
Roger C. Wiens
  • Function : Author
William Rapin
Thomas F. Bristow
  • Function : Author
John C. Bridges
  • Function : Author
Susanne P. Schwenzer
  • Function : Author
Benton Clark
  • Function : Author
Kenneth Herkenhoff
  • Function : Author
Jens Frydenvang
  • Function : Author
Nina L. Lanza
  • Function : Author
Samuel Clegg
  • Function : Author
Dorothea M. Delapp
  • Function : Author
Veronica L. Sanford
  • Function : Author
Madeleine R. Bodine
  • Function : Author
Rhonda Mcinroy
  • Function : Author

Abstract

We report the first in situ detection of boron on Mars. Boron has been detected in Gale crater at levels <0.05 wt % B by the NASA Curiosity rover ChemCam instrument in calcium-sulfate-filled fractures, which formed in a late-stage groundwater circulating mainly in phyllosilicate-rich bedrock interpreted as lacustrine in origin. We consider two main groundwater-driven hypotheses to explain the presence of boron in the veins: leaching of borates out of bedrock or the redistribution of borate by dissolution of borate-bearing evaporite deposits. Our results suggest that an evaporation mechanism is most likely, implying that Gale groundwaters were mildly alkaline. On Earth, boron may be a necessary component for the origin of life; on Mars, its presence suggests that subsurface groundwater conditions could have supported prebiotic chemical reactions if organics were also present and provides additional support for the past habitability of Gale crater.
Fichier principal
Vignette du fichier
Geophysical Research Letters - 2017 - Gasda - In situ detection of boron by ChemCam on Mars.pdf (552.8 Ko) Télécharger le fichier
Origin : Publisher files allowed on an open archive

Dates and versions

insu-03676956 , version 1 (24-05-2022)

Licence

Copyright

Identifiers

Cite

Patrick J. Gasda, Ethan B. Haldeman, Roger C. Wiens, William Rapin, Thomas F. Bristow, et al.. In situ detection of boron by ChemCam on Mars. Geophysical Research Letters, 2017, 44, pp.8739-8748. ⟨10.1002/2017GL074480⟩. ⟨insu-03676956⟩

Collections

INSU
4 View
7 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More