Gypsum, bassanite, and anhydrite at Gale crater, Mars
نویسندگان
چکیده
منابع مشابه
Mars atmosphere. Mars methane detection and variability at Gale crater.
Reports of plumes or patches of methane in the martian atmosphere that vary over monthly time scales have defied explanation to date. From in situ measurements made over a 20-month period by the tunable laser spectrometer of the Sample Analysis at Mars instrument suite on Curiosity at Gale crater, we report detection of background levels of atmospheric methane of mean value 0.69 ± 0.25 parts pe...
متن کاملDiagenesis and clay mineral formation at Gale Crater, Mars
The Mars Science Laboratory rover Curiosity found host rocks of basaltic composition and alteration assemblages containing clay minerals at Yellowknife Bay, Gale Crater. On the basis of the observed host rock and alteration minerals, we present results of equilibrium thermochemical modeling of the Sheepbed mudstones of Yellowknife Bay in order to constrain the formation conditions of its second...
متن کاملFluids, Evaporation and Precipitates at Gale Crater, Mars
and M-P. Zorzano 10 . 1 Dept. of Physical Sciences, CEPSAR, Open University, Milton Keynes UK; [email protected]; 2 Space Research Centre, Dept. of Physics and Astronomy, University of Leicester, UK; [email protected]; 3 Canadian Space Agency, St-Hubert, QC, J3Y 8Y9, Canada; 4 Space Remote Sensing, Los Alamos National Laboratory, Los Alamos, , USA; 5 Laboratoire Planétologie et Géod...
متن کاملMineralogy of a mudstone at Yellowknife Bay, Gale crater, Mars.
Sedimentary rocks at Yellowknife Bay (Gale crater) on Mars include mudstone sampled by the Curiosity rover. The samples, John Klein and Cumberland, contain detrital basaltic minerals, calcium sulfates, iron oxide or hydroxides, iron sulfides, amorphous material, and trioctahedral smectites. The John Klein smectite has basal spacing of ~10 angstroms, indicating little interlayer hydration. The C...
متن کاملHigh manganese concentrations in rocks at Gale crater, Mars
The surface of Mars has long been considered a relatively oxidizing environment, an idea supported by the abundance of ferric iron phases observed there. However, compared to iron, manganese is sensitive only to high redox potential oxidants, and when concentrated in rocks, it provides a more specific redox indicator of aqueous environments. Observations from the ChemCam instrument on the Curio...
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ژورنال
عنوان ژورنال: American Mineralogist
سال: 2018
ISSN: 0003-004X,1945-3027
DOI: 10.2138/am-2018-6346