1. Weathering of olivine under CO2atmosphere: A martian perspective

    Geochimica et Cosmochimica Acta 135:170 (2014)

    Recent analyses from the Curiosity rover at Yellowknife Bay (Gale crater, Mars) show sedimentary rocks deposited in a lacustrine environment and containing smectite clays thought to derive from the alteration of olivine. However, little is known about the weathering processes of olivin...
  2. A habitable fluvio-lacustrine environment at Yellowknife Bay, Gale crater, Mars.

    Science 343(6169):1242777 (2014) PMID 24324272

    The Curiosity rover discovered fine-grained sedimentary rocks, which are inferred to represent an ancient lake and preserve evidence of an environment that would have been suited to support a martian biosphere founded on chemolithoautotrophy. This aqueous environment was characterized by neutral...
  3. Elemental geochemistry of sedimentary rocks at Yellowknife Bay, Gale crater, Mars.

    Science 343(6169):1244734 (2014) PMID 24324274

    Sedimentary rocks examined by the Curiosity rover at Yellowknife Bay, Mars, were derived from sources that evolved from an approximately average martian crustal composition to one influenced by alkaline basalts. No evidence of chemical weathering is preserved, indicating arid, possibly cold, pal...
  4. Elemental geochemistry of sedimentary rocks at Yellowknife Bay, Gale crater, Mars.

    Science 343(6169):1244734 (2014) PMID 24324274

    Sedimentary rocks examined by the Curiosity rover at Yellowknife Bay, Mars, were derived from sources that evolved from an approximately average martian crustal composition to one influenced by alkaline basalts. No evidence of chemical weathering is preserved, indicating arid, possibly cold, pal...
  5. A habitable fluvio-lacustrine environment at Yellowknife Bay, Gale crater, Mars.

    Science 343(6169):1242777 (2014) PMID 24324272

    The Curiosity rover discovered fine-grained sedimentary rocks, which are inferred to represent an ancient lake and preserve evidence of an environment that would have been suited to support a martian biosphere founded on chemolithoautotrophy. This aqueous environment was characterized by neutral...
  6. Soil diversity and hydration as observed by ChemCam at Gale crater, Mars.

    Science 341(6153):1238670 (2013) PMID 24072924

    The ChemCam instrument, which provides insight into martian soil chemistry at the submillimeter scale, identified two principal soil types along the Curiosity rover traverse: a fine-grained mafic type and a locally derived, coarse-grained felsic type. The mafic soil component is representative o...
  7. Soil diversity and hydration as observed by ChemCam at Gale crater, Mars.

    Science 341(6153):1238670 (2013) PMID 24072924

    The ChemCam instrument, which provides insight into martian soil chemistry at the submillimeter scale, identified two principal soil types along the Curiosity rover traverse: a fine-grained mafic type and a locally derived, coarse-grained felsic type. The mafic soil component is representative o...
  8. Martian fluvial conglomerates at Gale crater.

    Science 340(6136):1068 (2013) PMID 23723230

    Observations by the Mars Science Laboratory Mast Camera (Mastcam) in Gale crater reveal isolated outcrops of cemented pebbles (2 to 40 millimeters in diameter) and sand grains with textures typical of fluvial sedimentary conglomerates. Rounded pebbles in the conglomerates indicate substantial fl...
  9. Martian fluvial conglomerates at Gale crater.

    Science 340(6136):1068 (2013) PMID 23723230

    Observations by the Mars Science Laboratory Mast Camera (Mastcam) in Gale crater reveal isolated outcrops of cemented pebbles (2 to 40 millimeters in diameter) and sand grains with textures typical of fluvial sedimentary conglomerates. Rounded pebbles in the conglomerates indicate substantial fl...
  10. Chronology of deposition and alteration in the Mawrth Vallis region, Mars

    Planetary and Space Science 72(1):31 (2012)

    The Mawrth Vallis area displays some of the largest phyllosilicate-rich outcrops of Mars, on Noachian highlands. The Mawrth Vallis region is located just at the dichotomy boundary between the Noachian highlands and the younger, northern lowlands. A large, thick, layered clay-rich unit ...
  11. Late Hesperian aqueous alteration at Majuro crater, Mars

    Planetary and Space Science 72(1):18 (2012)

    Impact craters cover a large portion of the surface of Mars and could constitute a significant exobiology research target as their formation provided heat sources for aqueous processes. To date, only rare examples of hydrothermal alteration in craters have been reported on Mars while m...
  12. The origin and timing of fluvial activity at Eberswalde crater, Mars

    Icarus 220(2):530 (2012)

    Highlights ► Valleys feeding the Eberswalde fan crosscut Holden impact crater ejecta blanket. ► Holden crater formation likely postdates the Early Hesperian. ► Modeling shows Eberswalde fan can form at a geologically rapid rate. ► The role of Holden crater in Eberswalde fluvi...
  13. Evaluating the role of sulfide-weathering in the formation of sulfates or carbonates on Mars

    Geochimica et Cosmochimica Acta 90:47 (2012)

    Orbital and landed missions to Mars have revealed complex sulfate- and Fe-oxide-bearing mineralogical assemblages, which have been interpreted as the result of a late planet-wide acidic period due to large SO2 emissions. However, this global scenario does not explain the recent discove...
  14. Characterization of hydrated silicate-bearing outcrops in Tyrrhena Terra, Mars: Implications to the alteration history of Mars

    Icarus 219(1):476 (2012)

    Highlights ► Tyrrhena Terra Region of Mars studied with orbital datasets. ► Numerous detections of phyllosilicates and zeolites associated to impact craters. ► Mineralogy and geomorphology indicate exhumation of pre-impact altered rocks. ► Mineralogy points to regional low-gr...
  15. Fluvial landforms on fresh impact ejecta on Mars

    Planetary and Space Science 62(1):69 (2012)

    Fluvial valleys provide critical clues to the distribution and state of water throughout the history of the planet Mars. Early in Mars' history (<3.7Gy), the climate may have been warmer than at present leading to the development of valley networks. Younger valleys formed on volcanic a...
  16. Segregation of olivine grains in volcanic sands in Iceland and implications for Mars

    Earth and Planetary Science Letters 310(3):233 (2011)

    Basaltic sands cover several plains in volcanic regions on Earth and dominate the aeolian sediments on Mars but basaltic sands are not as well characterized as felsic sands. The Lambahraun sandy–lava plain in Iceland was chosen as a martian analog to study the physical sorting of basaltic s...
  17. Stratigraphy, mineralogy, and origin of layered deposits inside Terby crater, Mars

    Icarus 211(1):273 (2011)

    The 174 km diameter Terby impact crater (28.0°S–74.1°E) located on the northern rim of the Hellas basin displays anomalous inner morphology, including a flat floor and light-toned layered deposits. An analysis of these deposits was performed using multiple datasets from Mars Global Su...
  18. Evidence for weathering on early Mars from a comparison with terrestrial weathering profiles

    Icarus 216(1):257 (2011)

    Highlights ► The role of climate in the formation of phyllosilicates observed at the surface of Mars remains at present time under debate. ► We compare a weathering profile developed in archean serpentinites in Australia and a section located in Nili Fossae in Mars. ► We discuss on the...
  19. Characterization of fluvial activity in Parana Valles using different age-dating techniques

    Icarus 207(2):686 (2010)

    Martian valley networks provide the best evidence that the climate on Mars was different in the past. Although these features are located primarily in heavily cratered terrain of Noachian age (>3.7 Ga), the ages of the features and the time when they were active is not well understood...
  20. Ismenius Cavus, Mars: A deep paleolake with phyllosilicate deposits

    Planetary and Space Science 58(6):941 (2010)

    Ismenius Cavus is a basin where several fluvial valleys converge. Three depositional fan deltas are observed at the valleys outlets at similar elevations. These fans suggest long-term fluvial activity accompanied by a lake inside the basin. The elevational difference between the delta plain...