Last Chance (Mars): Difference between revisions
Adding local short description: "Alrock outcrop on Mars", overriding Wikidata description "a rock outcrop on Mars" |
Changing short description from "Alrock outcrop on Mars" to "Rock outcrop on Mars" |
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{{Short description| |
{{Short description|Rock outcrop on Mars}} |
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{{Infobox feature on celestial object |
{{Infobox feature on celestial object |
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|name = Last Chance |
|name = Last Chance |
Latest revision as of 11:17, 8 June 2022
Feature type | Rock outcrop |
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Coordinates | 1°54′S 354°30′E / 1.9°S 354.5°E |
Last Chance is a layered rock outcrop found within the Margaritifer Sinus quadrangle (MC-19) region of the planet Mars, discovered by the Mars Exploration Rover Opportunity in March 2004. The rock lies within the outcrop near the rover's landing site at Meridiani Planum, Mars.
Images returned show evidence for a geologic feature known as ripple cross-stratification. At the base of the rock, layers can be seen dipping downward to the right. The bedding that contains these dipping layers is only one to two centimeters (0.4 to 0.8 inches) thick. In the upper right corner of the rock, layers also dip to the right, but exhibit a weak "concave-up" geometry. These two features—the thin, cross-stratified bedding combined with the possible concave geometry—suggest small ripples with sinuous crest lines. Although wind can produce ripples, they rarely have sinuous crest lines and never form steep, dipping layers at such a small scale. The most probable explanation for these ripples is that they were formed in the presence of moving water.[1]
See also[edit]
References[edit]
- ^ ""Last Chance" Evidence of Ancient Water Flow". Retrieved March 4, 2021.
External links[edit]