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  • Presentation | P11F: Habitability Across the Solar System and Exoplanets I Poster
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  • [ONLINE] P11F-VR8885: Potential Extended Past Habitability of Mars from Recent Mineralogical Measurements in Gale crater
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Author(s):
Elisabeth Hausrath, University of Nevada Las Vegas (First Author, Presenting Author)
James Hall, University of Nevada, Las Vegas
Elizabeth Rampe, NASA Johnson Space Center
Thomas Bristow, NASA Ames Research Center
Amy McAdam, NASA Goddard SFC
Luoth Chou, NASA Goddard Space Flight Center
Steve Chipera, Planetary Science Institute
Valerie Tu, Jacobs at NASA Johnson Space Center
Benjamin Tutolo, University of Calgary
Erwin Dehouck, University Paul Sabatier
David Vaniman, Planetary Science Institute
Richard Morris, NASA Johnson Space Center
David Blake, NASA Ames Research Center
Johannes Meusburger, NASA Ames Research Center
Tanya Peretyazhko, Jacobs Technology, NASA Johnson Space Center
Douglas Ming, NASA Johnson Space Center
Patricia Craig, Planetary Science Institute Tucson
Nicholas Castle, Planetary Science Institute
Robert Downs, University of Arizona
Robert Hazen, Carnegie Inst
Allan Treiman, Lunar & Planetary Inst
Shaunna Morrison, Rutgers University New Brunswick
Albert Yen, NASA Jet Propulsion Laboratory
Aditi Pandey, Lunar and Planetary institute
Sarah Simpson, Amentum
Michael Thorpe, NASA Goddard Space Flight Center
David Des Marais, NASA Ames
Rachel Sheppard, Planetary Science Institute Tucson
Benton Clark, Space Science Institute Boulder


The MSL Curiosity rover has been exploring Mars since its landing in Gale crater in 2012. Since 2014 the rover has been traversing up through younger sediments in the central mound of Gale crater, allowing the past habitability from these different environments to be assessed. Recently, the rover traversed through a channel that may represent the most recent liquid water in Gale crater. Samples drilled by the rover and analyzed by the XRD, CheMin, on Curiosity contain secondary phases that indicate potentially past habitable environments. These include clay minerals, which are particularly exciting due to the types of environments that they may indicate and the fact that they had not been observed for almost 400 vertical meters. The clay minerals were likely physically displaced from higher in the section, providing evidence for potentially long-lived durations of past aqueous and habitable environments. These environments may include weathering at the surface at an unconformity that the rover is approaching. Clay minerals were also detected in the host rock in a region of large fractures potentially formed from groundwater flow that may also represent past habitable conditions. These recent detections provide exciting information regarding potential long-lived past habitable conditions at Gale crater, Mars.



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