Evidence for Low-Grade Metamorphism, Hydrothermal Alteration, and Diagenesis on Mars from Phyllosilicate Mineral Assemblages

@article{Ehlmann2011EvidenceFL,
  title={Evidence for Low-Grade Metamorphism, Hydrothermal Alteration, and Diagenesis on Mars from Phyllosilicate Mineral Assemblages},
  author={Bethany L. Ehlmann and John F. Mustard and Roger N. Clark and Gregg Alan Swayze and Scott L. Murchie},
  journal={Clays and Clay Minerals},
  year={2011},
  volume={59},
  pages={359-377}
}
The enhanced spatial and spectral resolution provided by the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) on the Mars Reconnaissance Orbiter (MRO) has led to the discovery of numerous hydrated silicate minerals on Mars, particularly in the ancient, cratered crust comprising the southern highlands. Phases recently identified using visible/near-infrared spectra include: smectite, chlorite, prehnite, high-charge phyllosilicates (illite or muscovite), the zeolite analcime, opaline… Expand
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References

SHOWING 1-10 OF 130 REFERENCES
Identification of hydrated silicate minerals on Mars using MRO‐CRISM: Geologic context near Nili Fossae and implications for aqueous alteration
The Noachian terrain west of the Isidis basin hosts a diverse collection of alteration minerals in rocks comprising varied geomorphic units within a 100,000 km2 region in and near the Nili Fossae.… Expand
Hydrated silicate minerals on Mars observed by the Mars Reconnaissance Orbiter CRISM instrument
TLDR
The diversity of phyllosilicate mineralogy is expanded with the identification of kaolinite, chlorite and illite or muscovite, and a new class of hydrated silicate (hydrated silica). Expand
Mineralogy of the Nili Fossae region with OMEGA/Mars Express data: 1. Ancient impact melt in the Isidis Basin and implications for the transition from the Noachian to Hesperian
[1] The Nili Fossae region located on the northwestern quadrant of the Isidis Basin, Mars, displays superb exposures of bedrock outcrops that reveal mineralogy and composition of the crust. Previous… Expand
Mineral distribution in contact-metamorphosed siliceous dolomite at Ubehebe Peak, California, based on airborne imaging spectrometer data
Abstract Visible and near-infrared reflectance spectra of minerals in the CaO-MgO-SiO2-H2O-CO2 system and airborne imaging spectrometer data with a spatial resolution of 3.6 m were used to map the… Expand
Microstructures, Formation Mechanisms, and Depth-Zoning of Phyllosilicates in Geothermally Altered Shales, Salton Sea, California
Scanning, transmission, and analytical electron microscopy studies of shales from the Salton Sea geothermal field revealed that phyllosilicates progress through zones of illite-muscovite… Expand
The zeolite facies, with comments on the interpretation of hydrothermal syntheses
Abstract Field, petrographic and experimental evidence is presented on assemblages involving Ca-Al and Na—Al silicates, warranting recognition of a zeolite facies. This facies largely bridges the gap… Expand
Soil mineralogy and chemistry on Mars - Possible clues from salts and clays in SNC meteorites
Abstract All subgroups of the shergottite, nakhlite, and chassignite (SNC) meteorites contain traces of water-precipitated minerals that include various combinations of carbonates, sulfates, halides,… Expand
A synthesis of Martian aqueous mineralogy after 1 Mars year of observations from the Mars Reconnaissance Orbiter
Martian aqueous mineral deposits have been examined and characterized using data acquired during Mars Reconnaissance Orbiter's (MRO) primary science phase, including Compact Reconnaissance Imaging… Expand
Surface mineralogy of Martian low-albedo regions from MGS-TES data: Implications for upper crustal evolution and surface alteration
[1] Mars Global Surveyor Thermal Emission Spectrometer (MGS-TES) data are used to derive the modal mineralogy of spectrally distinct Martian low-albedo regions and to identify spatial trends in… Expand
Composition, Morphology, and Stratigraphy of Noachian Crust around the Isidis basin
Definitive exposures of pristine, ancient crust on Mars are rare, and the finding that much of the ancient Noachian terrain on Mars exhibits evidence of phyllosilicate alteration adds further… Expand
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