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Orbital identification of carbonate-bearing rocks on Mars

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Orbital identification of carbonate-bearing rocks on Mars; 2008; Article; Journal; Science; Ehlmann, B. L.; Mustard, J. F.; Murchie, S. L.; Poulet, F.; Bishop, J. L.; Brown, A. J.; Calvin, W. M.; Clark, R. N.; Des, Marais, D. J.; Milliken, R. E.; Roach, L. H.; Roush, T. L.; Swayze, G. A.; Wray, J. J.

Summary

Geochemical models for Mars predict carbonate formation during aqueous alteration. Carbonate-bearing rocks had not previously been detected on Mars' surface, but Mars Reconnaissance Orbiter mapping reveals a regional rock layer with near-infrared spectral characteristics that are consistent with the presence of magnesium carbonate in the Nili Fossae region. The carbonate is closely associated with both phyllosilicate-bearing and olivine-rich rock units and probably formed during the Noachian or early Hesperian era from the alteration of olivine by either hydrothermal fluids or near-surface water. The presence of carbonate as well as accompanying clays suggests that waters were neutral to alkaline at the time of its formation and that [...]

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Type Scheme Key
local-index unknown 70033071
local-pk unknown 70033071
doi http://www.loc.gov/standards/mods/mods-outline-3-5.html#identifier doi:10.1126/science.1164759
series unknown Science

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citationTypeArticle
journalScience
languageEnglish
parts
typevolume
value322
typeissue
value5909

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