File:Ascraeus Lava Channel Levvee ESP 018665 1920 RED.jpg
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Size of this preview: 299 × 599 pixels. Other resolutions: 120 × 240 pixels | 239 × 480 pixels | 383 × 768 pixels | 511 × 1,024 pixels | 2,048 × 4,103 pixels.
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| Description |
English: Ascraeus Mons is one of the giant shield volcanoes on Mars. Its flanks are built up of innumerable lava flows, but most are buried by too much dust to see features of interest.
This is one of the better preserved lava flows, showing a distinct channel running diagonally through the observation. As surges of hot lava spilled over the channels banks, levees were built up on either side of the flowing lava. Then, as the eruption slowed, the liquid lava drained out, leaving a long trough. While a relatively young feature for Mars, this lava surface is still very ancient - as one can tell from the large number of impact craters scattered across the image. The other persistent geologic process has been the wind. Its effect can be seen in the form of bright streaks heading west from craters and other topographic obstacles. This is where bright dust is able to find shelter from the wind. |
| Date | |
| Source | http://hirise.lpl.arizona.edu/ESP_018665_1920 (image link) |
| Author | NASA/JPL/University of Arizona |
| Permission (Reusing this file) |
Public Domain |
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This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.) |  |
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Transferred from en.wikipedia to Commons using For the Common Good.
The original description page was here. All following user names refer to en.wikipedia.
| Date/Time | Dimensions | User | Comment |
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| 01:17, 23 December 2010 | 2,048 × 4,103 (2,447,016 bytes) | w:en:Schaffman (talk | contribs) | ({{Information |Description = Channeled flow with Levees on Ascraeus Mons |Source = HiRISE website |Date = ~~~~~ |Author = NASA/JPL/University of Arizona |Permission = Public Domain |other_versions = }}) |
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| current | 08:02, 30 August 2012 | | 2,048 × 4,103 (2.33 MB) | Bulwersator (talk | contribs) | Transferred from en.wikipedia: see original upload log above |
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