@nasa : Our Mars orbiter sees the western side of an elongated pit depression in the eastern Noctis Labyrinthus region of Mars. Along the pit's upper wall is a light-toned layered deposit. Noctis Labyrinthus is a huge region of tectonically controlled valleys located at the western end of the Valles Marineris canyon system. Spectra extracted from the light-toned deposit are consistent with the mineral jarosite, which is a potassium and iron hydrous sulfate. On Earth, jarosite can form in ore deposits or from alteration near volcanic vents, and indicates an oxidizing and acidic environment. Image Credit: NASA/JPL-Caltech/Univ. of Arizona #nasa #space #mars #mro #nasabeyond @NASAJPL #science #geology
โพสต์เมื่อ 20 ก.พ. 2559 | 08:02 น.
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