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dc.contributor.authorCohen, Benjamin E.
dc.contributor.authorMark, Darren F.
dc.contributor.authorCassata, William S.
dc.contributor.authorLee, Martin R.
dc.contributor.authorTomkinson, Tim
dc.contributor.authorSmith, Caroline L.
dc.date.accessioned2017-10-16T14:30:20Z
dc.date.available2017-10-16T14:30:20Z
dc.date.issued2017-12
dc.identifier251376930
dc.identifier8df8c486-3ae2-41f0-9fcd-358761a009ce
dc.identifier85030454918
dc.identifier000412133200001
dc.identifier.citationCohen , B E , Mark , D F , Cassata , W S , Lee , M R , Tomkinson , T & Smith , C L 2017 , ' Taking the pulse of Mars via dating of a plume-fed volcano ' , Nature Communications , vol. 8 , 640 . https://doi.org/10.1038/s41467-017-00513-8en
dc.identifier.issn2041-1723
dc.identifier.urihttps://hdl.handle.net/10023/11857
dc.descriptionThis work was funded by the Science and Technology Facilities Council (grants ST/H002472/1, ST/H002960/1 and ST/K000918/1 to D.F.M. and M.R.L.) and the NASA Mars Fundamental Research Program (grant NNH14AX56I to W.S.C.). Portions of this work were performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344.en
dc.description.abstractMars hosts the solar system's largest volcanoes. Although their size and impact crater density indicate continued activity over billions of years, their formation rates are poorly understood. Here we quantify the growth rate of a Martian volcano by 40Ar/39Ar and cosmogenic exposure dating of six nakhlites, meteorites that were ejected from Mars by a single impact event at 10.7 ± 0.8 Ma (2σ). We find that the nakhlites sample a layered volcanic sequence with at least four discrete eruptive events spanning 93 ± 12 Ma (1416 ± 7 Ma to 1322 ± 10 Ma (2σ)). A non-radiogenic trapped 40Ar/36Ar value of 1511 ± 74 (2σ) provides a precise and robust constraint for the mid-Amazonian Martian atmosphere. Our data show that the nakhlite-source volcano grew at a rate of ca. 0.4-0.7 m Ma-1-three orders of magnitude slower than comparable volcanoes on Earth, and necessitating that Mars was far more volcanically active earlier in its history.
dc.format.extent9
dc.format.extent3360233
dc.language.isoeng
dc.relation.ispartofNature Communicationsen
dc.subjectQB Astronomyen
dc.subjectQD Chemistryen
dc.subjectChemistry(all)en
dc.subjectBiochemistry, Genetics and Molecular Biology(all)en
dc.subjectPhysics and Astronomy(all)en
dc.subjectDASen
dc.subject.lccQBen
dc.subject.lccQDen
dc.titleTaking the pulse of Mars via dating of a plume-fed volcanoen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews. School of Geography and Geosciencesen
dc.contributor.institutionUniversity of St Andrews. School of Earth & Environmental Sciencesen
dc.identifier.doi10.1038/s41467-017-00513-8
dc.description.statusPeer revieweden
dc.identifier.urlhttps://www.nature.com/articles/s41467-017-00513-8#Sec12en


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