Was Gale Crater (Mars) Connected to a Regionally Extensive Groundwater System?
AffiliationLunar & Planetary Laboratory, University of Arizona
hydrology and fluvial processes
MetadataShow full item record
PublisherBlackwell Publishing Ltd
CitationRoseborough, V., Horvath, D. G., & Palucis, M. C. (2021). Was Gale Crater (Mars) Connected to a Regionally Extensive Groundwater System?. Geophysical Research Letters, 48(6), e2020GL092107.
JournalGeophysical Research Letters
RightsCopyright © 2021 American Geophysical Union. All Rights Reserved.
Collection InformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at email@example.com.
AbstractGale crater, home of the Curiosity rover, contains some of the best geomorphic and sedimentologic evidence on Mars for large lakes during the Hesperian and Amazonian. Orbital data and rover observations of delta deposits and terminations of gully networks suggest several phases of stable lake levels. However, the regional extent, water source (groundwater vs. surface water), and climate during each lake stand are debated. Consistent gully network termination elevations (GNTEs) within Gale and 17 regional craters suggest that GNTEs record paleolake levels. Hydrologic modeling indicates these lakes may have been coeval and the result of a regional groundwater table, recording a drying trend from subhumid conditions to semiarid conditions. Crater counting indicates that most lake-hosting craters impacted after ∼3.7 Ga and surface water persisted intermittently until the Early Amazonian, constraining the timing but not duration of lakes. This work has implications for understanding water sources and volumes affecting sediments investigated by Curiosity. © 2021. American Geophysical Union. All Rights Reserved.
Note6 month embargo; first published: 10 March 2021
VersionFinal published version