Minerals over Mars
نویسندگان
چکیده
منابع مشابه
Magnetism, iron minerals, and life on Mars.
A short critical review is provided on two questions linking magnetism and possible early life on Mars: (1) Did Mars have an Earth-like internal magnetic field, and, if so, during which period and was it a requisite for life? (2) Is there a connection between iron minerals in the martian regolith and life? We also discuss the possible astrobiological implications of magnetic measurements at the...
متن کاملSulfate minerals and organic compounds on Mars
Strong evidence for evaporitic sulfate minerals such as gypsum and jarosite has recently been found on Mars. Although organic molecules are often codeposited with terrestrial evaporitic minerals, there have been no systematic investigations of organic components in sulfate minerals. We report here the detection of organic material, including amino acids and their amine degradation products, in ...
متن کاملStability of hydrated minerals on Mars
[1] The validity of recent identification of various hydrated minerals (kieserite, gypsum, hexahydrite, nontronite, chamosite, and montmorillonite) on Mars was assessed by exposing these minerals to simulated Martian surface conditions of atmospheric composition and pressure, temperature, and ultraviolet light irradiation. When exposed to such conditions the hydrated minerals exhibit in general...
متن کاملModeling Alteration Minerals on Mars – Investigating the High Temperature Component
Introduction: Alteration minerals are important indicators of thermochemical environments at the time of their formation – and thus indicators for the potential habitability of a site [1,2]. Therefore, the detection of alteration minerals, especially nontronite [3], on Mars was an important step to understand Mars’ hydrous history. This initial finding was followed by the detection of a wide va...
متن کاملPhyllosilicates and Other Hydrated Minerals on Mars: 2. Detailled Analysis
Introduction: Hydrated minerals preserve a record of past aqueous conditions on Mars. Recently, phyllosilicates, hydrated sulphates, hydrated silica have been detected in surface rocks by near-infrared spectrometers on orbiting spacecraft [1-4]. At the kilometer-scale resolution of the OMEGA instrument, phyllosilicate exposures are widespread and number in the dozens [5,6], while early discover...
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ژورنال
عنوان ژورنال: Science
سال: 2005
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.307.5715.1574