Evidence for platy hematite grains in Sinus Meridiani, Mars
نویسندگان
چکیده
منابع مشابه
Hematite Coatings Match Tes Spectra of Sinus Meridiani, Mars
Introduction. Lane et al. [1] and Christensen et al. [2] conclude that the 1996 Global Surveyor Thermal Emission Spectrometer (TES, ~1700–200 cm) spectra of regions in Sinus Meridiani match only coarsely particulate hematite. Here we show spectra of hematite coatings that match the TES signatures. The coating option is important because (1) hematite coatings can require little water to form, wh...
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Introduction: Meridiani Planum was chosen as the landing site for the Mars Exploration Rover Opportunity partially based on Mars Global Surveyor Thermal Emission Spectrometer data indicating an abundance of hematite [1]. Hematite often forms through processes that involve water, so the site was a promising one to determine whether conditions on Mars were ever suitable for life [1,2]. Opportunit...
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Sedimentary rocks at Eagle crater in Meridiani Planum are composed of fine-grained siliciclastic materials derived from weathering of basaltic rocks, sulfate minerals (including magnesium sulfate and jarosite) that constitute several tens of percent of the rock by weight, and hematite. Cross-stratification observed in rock outcrops indicates eolian and aqueous transport. Diagenetic features inc...
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Introduction: Thanks to the instruments onboard recent ground-based and orbital missions, an unprecedented amount of high quality data exists relevant to the secondary minerals characteristics of the altered martian surface. One of the most striking results is that sulfates are among the most abundant secondary phases and are concentrated in geological units intermediate in age between older No...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research: Planets
سال: 2002
ISSN: 0148-0227
DOI: 10.1029/2001je001832