Hydrothermal Alteration of Etna Ash and Implications for Mars
نویسندگان
چکیده
منابع مشابه
Impact-generated Hydrothermal Alteration on Mars: Clay Minerals, Oxides, Zeolites, and More
Introduction: In the Noachian, Mars’ crust was deeply affected by impact crater gardening [1], and subsequent hydrothermal alteration. While water was present in the Martian crust [2,3], frequent impacts [4,5] provided prominent heat sources that drove hydrothermal systems. Those systems were scattered randomly over the planet’s surface and variable in size, but generally spanned the diameter o...
متن کاملImpact-generated Hydrothermal Alteration on Early Mars in Presence of Co2
Introduction: Impact-generated hydrothermal systems may have caused widespread alteration of the crust on early Mars. We previously explored the range of alteration products using several Martian meteorites as crustal proxies: LEW88516 [1-3], Dhofar 378, Chassigny [4], and Nakhla [5]. Overall, the dominating alteration phases are oxides, hydroxides, clay minerals, and other hydrous silicates. O...
متن کاملLow temperature aqueous alteration of basalt: Mineral assemblages of Deccan basalts and implications for Mars
[1] Al-rich phyllosilicates (kaolinite, montmorillonite) have been found in layers overlying Fe/Mg-smectites on Mars, and it has been suggested that this stratigraphy formed through in situ leaching at the surface, similar to terrestrial weathering profiles. We are investigating the remotely sensed signatures of this type of weathering using ten samples from a vertical section of altered Deccan...
متن کاملHydrothermal Origin of Smectite in Volcanic Ash
Abstraet--Smectite and fine-grained quartz were separated from 6 volcanic ash samples collected in Japan from Shinmoe-dake Volcano, southern Kyushu, and Mt. Usu Volcano, southern Hokkaido. Oxygen isotope ratios of smectite in the volcanic ash range from +6,9 to + 12.9 per mill (%o), which are comparable to the values of smectite (~lsO = +6.5 and +9.4%0) from currently active geothermal fields. ...
متن کاملA Host for Lithium in Mil03346 and Implications for Aqueous Alteration on Mars
Introduction: Products of low-T aqueous alteration processes on Mars are relatively abundant in the nakhlites [1]. This includes mixtures of poorly crystalline clays and amorphous material, often dubbed iddingsite. They can be found in the mesostasis or forming veinlets in olivine [2] as well as being part of mineral assemblages, e.g. inside carbonate veinlets in Lafayette [3,4], in association...
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ژورنال
عنوان ژورنال: Minerals
سال: 2020
ISSN: 2075-163X
DOI: 10.3390/min10050450