Crater gradation in Gusev crater and Meridiani Planum, Mars
نویسندگان
چکیده
منابع مشابه
Phyllosilicates and sulfates at Endeavour Crater, Meridiani Planum, Mars
[1] Phyllosilicates have been identified on the Martian surface from orbit, and are hypothesized to have formed under wet, non-acidic conditions early in the planet’s history. Exposures of these minerals have not yet been examined by a landed mission. Using Mars Reconnaissance Orbiter data, we report the detection of phyllosilicatebearing outcrops that may be accessible by the Mars Exploration ...
متن کاملComparison of Mössbauer Spectra of Soils from Gusev Crater and Meridiani Planum
Introduction: One of the strengths of Mössbauer spectroscopy is its ability to distinguish between the different oxidation states of iron in minerals. Such information is very useful in the determination of the degree of weathering of a planetary surface. Comparison between the mineralogy and oxidation state of the soils at Gusev and those at Meridiani lends insight into the processes that shap...
متن کاملMars Reconnaissance Orbiter and Opportunity observations of the Burns formation: Crater hopping at Meridiani Planum
Compact Reconnaissance Imaging Spectrometer for Mars hyperspectral (1.0–2.65μm) along-track oversampled observations covering Victoria, Santa Maria, Endeavour, and Ada craters were processed to 6m/pixel and used in combination with Opportunity observations to detect and map hydrated Mg and Ca sulfate minerals in the Burns formation. The strongest spectral absorption features were found to be as...
متن کاملSmall crater modification on Meridiani Planum and implications for erosion rates and climate change on Mars
A morphometric and morphologic catalog of ~100 small craters imaged by the Opportunity rover over the 33.5 km traverse between Eagle and Endeavour craters on Meridiani Planum shows craters in six stages of degradation that range from fresh and blocky to eroded and shallow depressions ringed by planed off rim blocks. The age of each morphologic class from <50–200 ka to ~20Ma has been determined ...
متن کاملSulfate-Rich Eolian and Wet Interdune Deposits, Erebus Crater, Meridiani Planum, Mars
A long-standing goal of Mars environmental studies is to understand the role of water throughout its geologic history. The Mars Exploration Rover (MER) Opportunity has worked towards this goal by investigating bedrock exposures within craters in Meridiani Planum. Each crater provides an opportunity to test and refine models proposed for the formation of the Meridiani bedrock. The sulfate-rich b...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research: Planets
سال: 2006
ISSN: 0148-0227
DOI: 10.1029/2005je002465