Identification of Carbonate-Rich Outcrops on Mars by the Spirit Rover

@article{Morris2010IdentificationOC,
  title={Identification of Carbonate-Rich Outcrops on Mars by the Spirit Rover},
  author={Richard V. Morris and Steven W. Ruff and Ralf Gellert and Doug W. Ming and Raymond E. Arvidson and Benton C. Clark and Dadi C. Golden and Kirsten L. Siebach and G{\"o}star Klingelh{\"o}fer and Christian Schr{\"o}der and Iris Fleischer and Albert S. Yen and Steven W. Squyres},
  journal={Science},
  year={2010},
  volume={329},
  pages={421 - 424}
}
Ancient Carbonate Minerals on Mars The historical presence of liquid water on Mars together with a CO 2-rich atmosphere should have resulted in the accumulation of large deposits of carbonate minerals. Yet, evidence for the presence of carbonates on the surface of Mars has been scarce. Using data collected by the Mars Exploration Rover, Spirit, Morris et al. (p. 421, published online 3 June; see the Perspective by Harvey) now present evidence for carbonate-rich outcrops in the Comanche outcrops… 

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References

SHOWING 1-10 OF 41 REFERENCES

Orbital Identification of Carbonate-Bearing Rocks on Mars

TLDR
The presence of carbonate as well as accompanying clays suggests that waters were neutral to alkaline at the time of its formation and that acidic weathering, proposed to be characteristic of Hesperian Mars, did not destroy these carbonates and thus did not dominate all aqueous environments.

Alteration Assemblages in Martian Meteorites: Implications for Near-Surface Processes

The SNC (Shergotty-Nakhla-Chassigny) meteorites have recorded interactions between martian crustal fluids and the parent igneous rocks. The resultant secondary minerals — which comprise up to ∼1

A chemical model for evaporites on early Mars: Possible sedimentary tracers of the early climate and implications for exploration

Martian geomorphology seems to indicate extensive hydrological activity during the Noachian era. Liquid water at the surface would require a large greenhouse effect that is widely hypothesized to

A possible high-temperature origin for the carbonates in the martian meteorite ALH84001

TLDR
It is argued that the most likely explanation for the observed compositions, and for the absence of co-existing hydrous minerals, is that the carbonates were formed by reactions between hot (>650 °C), CO2-rich fluids and the ultramafic host rock during an impact event.

Detection of Silica-Rich Deposits on Mars

TLDR
Opaline silica deposits found on Mars are interpreted to have formed under hydrothermal conditions and therefore to be strong indicators of a former aqueous environment, important for understanding the past habitability of Mars.

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

The age of the carbonates in martian meteorite ALH84001.

TLDR
The carbonate formation age is contemporaneous with a period in martian history when the surface is thought to have had flowing water, but also was undergoing heavy bombardment by meteorites, therefore, this age does not distinguish between aqueous and impact origins for the carbonates.

Evidence for Calcium Carbonate at the Mars Phoenix Landing Site

TLDR
Results suggest that the soil at the Phoenix landing site must have suffered alteration through the action of liquid water in geologically the recent past, and an alkaline environment was revealed, in contrast to that found by the Mars Exploration Rovers, indicating that many different environments have existed on Mars.

Iron mineralogy and aqueous alteration from Husband Hill through Home Plate at Gusev Crater, Mars: Results from the Mössbauer instrument on the Spirit Mars Exploration Rover

[1] Spirit's Mossbauer (MB) instrument determined the Fe mineralogy and oxidation state of 71 rocks and 43 soils during its exploration of the Gusev plains and the Columbia Hills (West Spur, Husband