Discovery of alunite in Cross crater, Terra Sirenum, Mars: Evidence for acidic, sulfurous waters
نویسندگان
چکیده
منابع مشابه
Discovery of alunite in Cross crater, Terra Sirenum, Mars: Evidence for acidic, sulfurous waters
Cross crater is a 65 km impact crater, located in the Noachian highlands of the Terra Sirenum region of Mars (30°S, 158°W), which hosts aluminum phyllosilicate deposits first detected by the Observatoire pour la Minéralogie, L’Eau, les Glaces et l’Activitié (OMEGA) imaging spectrometer on Mars Express. Using high-resolution data from the Mars Reconnaissance Orbiter, we examine Cross crater’s ba...
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Introduction: Inferred paleolakes on the surface of Mars are key targets for astrobiology. To date, pale-olakes have been identified primarily based on mor-phologic evidence, including inlet and outlet channels, deltas, and horizontal bedding in closed basins [1-3]. Clay minerals have been identified in some of these settings, but these may be detrital [4]. Other alteration products such as eva...
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[1] The 750 m diameter and 75 m deep Victoria crater in Meridiani Planum, Mars, is a degraded primary impact structure retaining a 5 m raised rim consisting of 1–2 m of uplifted rocks overlain by 3 m of ejecta at the rim crest. The rim is 120–220 m wide and is surrounded by a dark annulus reaching an average of 590 m beyond the raised rim. Comparison between observed morphology and that expecte...
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ژورنال
عنوان ژورنال: American Mineralogist
سال: 2016
ISSN: 0003-004X
DOI: 10.2138/am-2016-5574