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dc.contributor.authorOberlin, Elizabeth A
dc.contributor.authorClaire, Mark W
dc.contributor.authorKounaves, Sam
dc.identifier.citationOberlin , E A , Claire , M W & Kounaves , S 2018 , ' Evaluation of the Tindouf Basin region in Southern Morocco as an analog site for soil geochemistry on Noachian Mars ' , Astrobiology , vol. 18 , no. 8 .
dc.identifier.otherPURE: 252459423
dc.identifier.otherPURE UUID: 7a5d66bd-85f5-4a91-a458-65480a720c85
dc.identifier.otherRIS: urn:33C3A123FD5B00D2F17842BC5A35F6DA
dc.identifier.otherRIS: 20D52D8E-59B8-489E-BD52-E1F975485730
dc.identifier.otherScopus: 85054896084
dc.identifier.otherORCID: /0000-0001-9518-089X/work/42504531
dc.identifier.otherWOS: 000424714500001
dc.description.abstractLocations on Earth that provide insights into processes that may be occurring or may have occurred throughout martian history are often broadly deemed ‘‘Mars analogue environments.’’ As no single locale can precisely represent a past or present martian environment, it is important to focus on characterization of terrestrial processes that produce analogous features to those observed in specific regions of Mars or, if possible, specific time periods during martian history. Here, we report on the preservation of ionic species in soil samples collected from the Tindouf region of Morocco and compare them with the McMurdo Dry Valleys of Antarctica, the Atacama Desert in Chile, the martian meteorite EETA79001, and the in situ Mars analyses from the Phoenix Wet Chemistry Laboratory (WCL). The Moroccan samples show the greatest similarity with those from Victoria Valley, Beacon Valley, and the Atacama, while being consistently depleted compared to University Valley and enriched compared to Taylor Valley. The NO3/Cl ratios are most similar to Victoria Valley and Atacama, while the SO4/Cl ratios are similar to those from Beacon Valley, Victoria Valley, and the Atacama. While perchlorate concentrations in the Moroccan samples are typically lower than those found in samples of other analogue sites, conditions in the region are sufficiently arid to retain oxychlorines at detectable levels. Our results suggest that the Tindouf Basin in Morocco can serve as a suitable analogue for the soil geochemistry and subsequent aridification of the Noachian epoch on Mars.
dc.rightsCopyright 2018, Mary Ann Liebert, Inc. This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at
dc.subjectMars analogsen
dc.subjectGE Environmental Sciencesen
dc.subjectQD Chemistryen
dc.subjectQE Geologyen
dc.titleEvaluation of the Tindouf Basin region in Southern Morocco as an analog site for soil geochemistry on Noachian Marsen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews.School of Earth & Environmental Sciencesen
dc.contributor.institutionUniversity of St Andrews.St Andrews Centre for Exoplanet Scienceen
dc.contributor.institutionUniversity of St Andrews.St Andrews Isotope Geochemistryen
dc.description.statusPeer revieweden

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