Detection of Silica-Rich Deposits on Mars

@article{Squyres2008DetectionOS,
  title={Detection of Silica-Rich Deposits on Mars},
  author={Steven W. Squyres and Raymond E. Arvidson and Steven W. Ruff and Ralf Gellert and Richard V. Morris and Doug W. Ming and Larry S. Crumpler and Jack D. Farmer and D. J. Des Marais and Albert S. Yen and Scott M. McLennan and Wilfrid Calvin and James F. Bell and Benton C. Clark and A. Wang and Timothy J. Mccoy and M. E. Schmidt and Paulo A. de Souza},
  journal={Science},
  year={2008},
  volume={320},
  pages={1063 - 1067}
}
Mineral deposits on the martian surface can elucidate ancient environmental conditions on the planet. Opaline silica deposits (as much as 91 weight percent SiO2) have been found in association with volcanic materials by the Mars rover Spirit. The deposits are present both as light-toned soils and as bedrock. We interpret these materials to have formed under hydrothermal conditions and therefore to be strong indicators of a former aqueous environment. This discovery is important for… 

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References

SHOWING 1-10 OF 39 REFERENCES

Hydrothermal processes at Gusev Crater: An evaluation of Paso Robles class soils

[1] The Mars Exploration Rover Spirit analyzed multiple occurrences of sulfur-rich, light-toned soils along its traverse within Gusev Crater. These hydrated deposits are not readily apparent in

A Global View of Martian Surface Compositions from MGS-TES

Thermal Emission Spectrometer (TES) data from the Mars Global Surveyor (MGS) are used to determine compositions and distributions of martian low-albedo regions. Two surface spectral signatures are

Effects of pure silica coatings on thermal emission spectra of basaltic rocks: Considerations for Martian surface mineralogy

On Mars, silica derived from chemical weathering could precipitate to coat rocks and particles. We suggest that rock coatings of secondary amorphous silica may account for a widespread Martian

Evolution of hydrothermal ecosystems on Earth (and Mars

Partial table of contents:. Hydrothermal Systems as Environments for the Emergence of Life (E. Shock). Chemical and Physical Context for Life in Terrestrial Hydrothermal Systems: Chemical Reactors

Thermal emission spectroscopy of the silica polymorphs and considerations for remote sensing of Mars

The possible existence of silica‐rich rocks on Mars requires consideration of all of the candidate forms of silica that might exist there. We synthesized coesite and cristobalite, and obtained

Preservation of biological information in thermal spring deposits: developing a strategy for the search for fossil life on Mars.

The juxtaposition of stream valley headwaters with volcanoes and impact craters on Mars strongly implies that subsurface heating of groundwater created thermal springs, and these springs create distinctive geomorphic features and chemical signatures which can be detected by remote sensing.

The mineralogy, texture and significance of silica derived from alteration by steam condensate in three New Zealand geothermal fields

Abstract Opaline silica residue accumulates on the surface and in the near surface of the Te Kopia, Tikitere and Rotokawa geothermal fields, where rhyolitic tuffs are attacked by steam condensate,