Hydrothermal origin of halogens at Home Plate, Gusev Crater

Mariek E. Schmidt, Steven Ruff, Timothy J. McCoy, William H. Farrand, Jeffrey R. Johnson, Ralf Gellert, Douglas W. Ming, Richard V. Morris, Nathalie Cabrol, Kevin W. Lewis, Christian Schroeder

Research output: Contribution to journalArticle

51 Citations (Scopus)

Abstract

In the Inner Basin of the Columbia Hills, Gusev Crater is Home Plate, an 80 m platform of layered elastic rocks of the Barnhill class with microscopic and macroscopic textures, including a bomb sag, suggestive of a phreatomagmatic origin. We present data acquired by the Spirit Mars Exploration Rover by Alpha Particle X-Ray Spectrometer (APXS), Mössbauer Spectrometer, Miniature Thermal Emission Spectrometer (Mini-TES), and Panoramic Camera (Pancam) for the Barnhill class rocks and nearby vesicular Irvine class basalts. In major element concentrations (e.g., SiO2, Al2O3, MgO, and FeO*), the two rock classes are similar, suggesting that they are derived from a similar magmatic source. The Barnhill class, however, has higher abundances of Cl, Br, Zn, and Ge with comparable SO3 to the Irvine basalts. Nanophase ferric oxide (np ox) and volcanic glass were detected in the Barnhill class rocks by Mössbauer and Mini-TES, respectively, and imply greater alteration and cooling rates in the Barnhill than in the Irvine class rocks. The high volatile elements in the Barnhill class agree with volcanic textures that imply interaction with a briny groundwater during eruption and (or) by later alteration. Differences in composition between the Barnhill and Irvine classes allow the fingerprinting of a Na-Mg-Zn-Ge-Cl-Br (±Fe ± Ca ± CO2) brine with low S. Nearby sulfate salt soils of fumarolic origin may reflect fractionation of an acidic S-rich vapor during boiling of a hydrothermal brine at depth. Persistent groundwater was likely present during and after the formation of Home Plate.

Original languageEnglish (US)
Article numberE06S12
JournalJournal of Geophysical Research E: Planets
Volume113
Issue number6
DOIs
StatePublished - Jun 20 2008

Fingerprint

halogens
Halogens
halogen
craters
crater
spectrometers
spectrometer
rocks
Rocks
heat emissions
rock by class
Spectrometers
basalt
rock
brine
texture
Groundwater
groundwater
volatile element
Particle spectrometers

ASJC Scopus subject areas

  • Geophysics
  • Forestry
  • Oceanography
  • Aquatic Science
  • Ecology
  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
  • Earth-Surface Processes
  • Atmospheric Science
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science
  • Palaeontology

Cite this

Schmidt, M. E., Ruff, S., McCoy, T. J., Farrand, W. H., Johnson, J. R., Gellert, R., ... Schroeder, C. (2008). Hydrothermal origin of halogens at Home Plate, Gusev Crater. Journal of Geophysical Research E: Planets, 113(6), [E06S12]. https://doi.org/10.1029/2007JE003027

Hydrothermal origin of halogens at Home Plate, Gusev Crater. / Schmidt, Mariek E.; Ruff, Steven; McCoy, Timothy J.; Farrand, William H.; Johnson, Jeffrey R.; Gellert, Ralf; Ming, Douglas W.; Morris, Richard V.; Cabrol, Nathalie; Lewis, Kevin W.; Schroeder, Christian.

In: Journal of Geophysical Research E: Planets, Vol. 113, No. 6, E06S12, 20.06.2008.

Research output: Contribution to journalArticle

Schmidt, ME, Ruff, S, McCoy, TJ, Farrand, WH, Johnson, JR, Gellert, R, Ming, DW, Morris, RV, Cabrol, N, Lewis, KW & Schroeder, C 2008, 'Hydrothermal origin of halogens at Home Plate, Gusev Crater', Journal of Geophysical Research E: Planets, vol. 113, no. 6, E06S12. https://doi.org/10.1029/2007JE003027
Schmidt, Mariek E. ; Ruff, Steven ; McCoy, Timothy J. ; Farrand, William H. ; Johnson, Jeffrey R. ; Gellert, Ralf ; Ming, Douglas W. ; Morris, Richard V. ; Cabrol, Nathalie ; Lewis, Kevin W. ; Schroeder, Christian. / Hydrothermal origin of halogens at Home Plate, Gusev Crater. In: Journal of Geophysical Research E: Planets. 2008 ; Vol. 113, No. 6.
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