Crater Mound Formation by Wind Erosion on Mars
نویسندگان
چکیده
منابع مشابه
Seasonal melting and the formation of sedimentary rocks on Mars, with predictions for the Gale Crater mound
17 A model for the formation and distribution of sedimentary rocks on Mars 18 is proposed. The rate–limiting step is supply of liquid water from seasonal 19 melting of snow or ice. The model is run for a O(10) mbar pure CO2 atmo20 sphere, dusty snow, and solar luminosity reduced by 23%. For these conditions 21 snow only melts near the equator, and only when obliquity &40◦, eccentricity 22 &0.12...
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 کاملSolar wind-induced atmospheric erosion at Mars: first results from ASPERA-3 on Mars Express.
The Analyzer of Space Plasma and Energetic Atoms (ASPERA) on board the Mars Express spacecraft found that solar wind plasma and accelerated ionospheric ions may be observed all the way down to the Mars Express pericenter of 270 kilometers above the dayside planetary surface. This is very deep in the ionosphere, implying direct exposure of the martian topside atmosphere to solar wind plasma forc...
متن کاملErosional modification and gully formation at Meteor Crater, Arizona: Insights into crater degradation processes on Mars
0019-1035/$ see front matter 2010 Elsevier Inc. A doi:10.1016/j.icarus.2010.03.032 * Corresponding author at: Room No. 122, Main Bu Research Institute, Council of Scientific and Industria Uppal Road, Hyderabad 500 606, Andhra Pradesh, Ind E-mail addresses: [email protected], senthil@ Hydrogeological modification of Meteor Crater produced a spectacular set of gullies throughout the interior ...
متن کاملDiagenesis and clay mineral formation at Gale Crater, Mars
The Mars Science Laboratory rover Curiosity found host rocks of basaltic composition and alteration assemblages containing clay minerals at Yellowknife Bay, Gale Crater. On the basis of the observed host rock and alteration minerals, we present results of equilibrium thermochemical modeling of the Sheepbed mudstones of Yellowknife Bay in order to constrain the formation conditions of its second...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research: Planets
سال: 2018
ISSN: 2169-9097
DOI: 10.1002/2017je005459