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Title: Redox stratification of an ancient lake in Gale crater, Mars

Journal Article · · Science
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [2]; ORCiD logo [1]; ORCiD logo [3]; ORCiD logo [2]; ORCiD logo [2]; ORCiD logo [4]; ORCiD logo [5]; ORCiD logo [6]; ORCiD logo [7]; ORCiD logo [8]; ORCiD logo [9]; ORCiD logo [10];  [11]; ORCiD logo [12]; ORCiD logo [13]; ORCiD logo [13];  [14]; ORCiD logo [15] more »;  [2]; ORCiD logo [16]; ORCiD logo [17] « less
  1. Stony Brook Univ., Stony Brook, NY (United States)
  2. California Inst. of Technology (CalTech), Pasadena, CA (United States)
  3. Brown Univ., Providence, RI (United States)
  4. NASA Ames Research Center (ARC), Moffett Field, CA (United States)
  5. Univ. Paul Sabatier, Toulouse (France)
  6. NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States)
  7. Consejo Superior de Investigaciones Cientificas - Instituto Nacional de Tecnica Aeroespacial (CSIC-INTA), Madrid (Spain); Cornell Univ., Ithaca, NY (United States)
  8. Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Univ. of Copenhagen, Copenhagen (Denmark)
  9. Univ. of Guelph, Guelph, ON (Canada)
  10. Smithsonian Institution, Washington, D.C. (United States)
  11. Imperial College, London (United Kingdom)
  12. U.S. Geological Survey, Flagstaff, AZ (United States)
  13. NASA Johnson Space Center, Houston, TX (United States)
  14. Brock Univ., St. Catharines, ON (Canada)
  15. Stony Brook Univ., Stony Brook, NY (United States); California Inst. of Technology (CalTech), Pasadena, CA (United States)
  16. Univ. of California, Davis, CA (United States)
  17. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

In 2012, NASA’s Curiosity rover landed on Mars to assess its potential as a habitat for past life and investigate the paleoclimate record preserved by sedimentary rocks inside the ~150-kilometer-diameter Gale impact crater. Geological reconstructions from Curiosity rover data have revealed an ancient, habitable lake environment fed by rivers draining into the crater. We synthesize geochemical and mineralogical data from lake-bed mudstones collected during the first 1300 martian solar days of rover operations in Gale. We present evidence for lake redox stratification, established by depth-dependent variations in atmospheric oxidant and dissolved-solute concentrations. Paleoclimate proxy data indicate that a transition from colder to warmer climate conditions is preserved in the stratigraphy. Lastly, a late phase of geochemical modification by saline fluids is recognized.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
National Aeronautics and Space Administration (NASA); USDOE
Grant/Contract Number:
AC52-06NA25396
OSTI ID:
1418769
Report Number(s):
LA-UR-17-27689
Journal Information:
Science, Vol. 356, Issue 6341; ISSN 0036-8075
Publisher:
AAASCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 190 works
Citation information provided by
Web of Science

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Modeling Martian Atmospheric Losses over Time: Implications for Exoplanetary Climate Evolution and Habitability journal May 2018
How Much of the Sediment in Gale Crater's Central Mound Was Fluvially Transported? journal May 2019
The Propitious Role of Solar Energetic Particles in the Origin of Life journal January 2018
Deep Microbial Colonization in Saponite-Bearing Fractures in Aged Basaltic Crust: Implications for Subsurface Life on Mars journal December 2019
Surface clay formation during short-term warmer and wetter conditions on a largely cold ancient Mars journal February 2018
The potential science and engineering value of samples delivered to Earth by Mars sample return journal March 2019
A Field Guide to Finding Fossils on Mars journal May 2018
An interval of high salinity in ancient Gale crater lake on Mars journal October 2019
O2 solubility in Martian near-surface environments and implications for aerobic life journal October 2018
Evidence for plunging river plume deposits in the Pahrump Hills member of the Murray formation, Gale crater, Mars journal February 2019
Semiarid climate and hyposaline lake on early Mars inferred from reconstructed water chemistry at Gale journal October 2019
Contrasting Regional Soil Alteration Across the Topographic Dichotomy of Mars journal December 2019
Ancient Martian aeolian processes and palaeomorphology reconstructed from the Stimson formation on the lower slope of Aeolis Mons, Gale crater, Mars journal April 2018
Ichnofossils, Cracks or Crystals? A Test for Biogenicity of Stick-Like Structures from Vera Rubin Ridge, Mars journal January 2020
The potential science and engineering value of samples delivered to Earth by Mars sample return text January 2019
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Fe-oxide concretions formed by interacting carbonate and acidic waters on Earth and Mars journal December 2018
Sample Collection and Return from Mars: Optimising Sample Collection Based on the Microbial Ecology of Terrestrial Volcanic Environments journal October 2019
Experimental and Simulation Efforts in the Astrobiological Exploration of Exooceans journal January 2020
Magnetite authigenesis and the warming of early Mars journal August 2018
Organic matter preserved in 3-billion-year-old mudstones at Gale crater, Mars journal June 2018
A surface gravity traverse on Mars indicates low bedrock density at Gale crater journal January 2019
Geologic Constraints on Early Mars Climate journal January 2019
Dusty Rocks in Gale Crater: Assessing Areal Coverage and Separating Dust and Rock Contributions in APXS Analyses journal July 2018
Prebiotic chemistry in neutral/reduced-alkaline gas-liquid interfaces journal February 2019
Geological Features and Evolution of Yardangs in the Qaidam Basin, Tibetan Plateau (NW China): A Terrestrial Analogue for Mars journal September 2018
The origin of life as a planetary phenomenon journal February 2020
Subsistence of ice-covered lakes during the Hesperian at Gale crater, Mars journal March 2020
Analyses of High‐Iron Sedimentary Bedrock and Diagenetic Features Observed With ChemCam at Vera Rubin Ridge, Gale Crater, Mars: Calibration and Characterization journal October 2020
A Low-Diversity Microbiota Inhabits Extreme Terrestrial Basaltic Terrains and Their Fumaroles: Implications for the Exploration of Mars journal March 2019
In search of the RNA world on Mars journal February 2021
Clay mineral diversity and abundance in sedimentary rocks of Gale crater, Mars journal June 2018
Glaciers and Ice Sheets As Analog Environments of Potentially Habitable Icy Worlds journal July 2017
Nitrate-Dependent Iron Oxidation: A Potential Mars Metabolism journal March 2018
Microbial Communities in Sediments From Four Mildly Acidic Ephemeral Salt Lakes in the Yilgarn Craton (Australia) – Terrestrial Analogs to Ancient Mars journal May 2019
Microbiology and Nitrogen Cycle in the Benthic Sediments of a Glacial Oligotrophic Deep Andean Lake as Analog of Ancient Martian Lake-Beds journal May 2019

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