Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/26700
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dc.contributor.authorMittlefehldt, Daviden_UK
dc.contributor.authorGellert, Ralfen_UK
dc.contributor.authorVanBommel, Scotten_UK
dc.contributor.authorMing, Douglasen_UK
dc.contributor.authorYen, Alberten_UK
dc.contributor.authorClark, Benton Cen_UK
dc.contributor.authorMorris, Richarden_UK
dc.contributor.authorSchröder, Christianen_UK
dc.contributor.authorCrumpler, Larry Sen_UK
dc.contributor.authorGrant, John Aen_UK
dc.contributor.authorJolliff, Bradley Len_UK
dc.contributor.authorArvidson, Raymond Een_UK
dc.contributor.authorFarrand, William Hen_UK
dc.contributor.authorHerkenhoff, Kenneth Een_UK
dc.contributor.authorBell, Jamesen_UK
dc.contributor.authorCohen, Barbaraen_UK
dc.contributor.authorKlingelhöfer, Göstaren_UK
dc.contributor.authorSchrader, Christianen_UK
dc.contributor.authorRice, Jamesen_UK
dc.date.accessioned2018-03-03T02:11:10Z-
dc.date.available2018-03-03T02:11:10Z-
dc.date.issued2018-05-31en_UK
dc.identifier.urihttp://hdl.handle.net/1893/26700-
dc.description.abstractWe report the results of geological studies by the Opportunity Mars rover on the Endeavour Crater rim. Four major units occur in the region (oldest to youngest): the Matijevic, Shoemaker, Grasberg and Burns formations. The Matijevic formation, consisting of fine-grained clastic sediments, is the only pre-Endeavour-impact unit and might be part of the Noachian etched units of Meridiani Planum. The Shoemaker formation is a heterogeneous polymict impact breccia; its lowermost member incorporates material eroded from the underlying Matijevic formation. The Shoemaker formation is a close analog to the Bunte Breccia of the Ries Crater, although the average clast sizes are substantially larger in the latter. The Grasberg formation is a 46 thin, fine-grained, homogeneous sediment unconformably overlying the Shoemaker formation, and likely formed as an airfall deposit of unknown areal extent. The Burns formation sandstone overlies the Grasberg, but compositions of the two units are distinct; there is no evidence that the Grasberg formation is a fine-grained subfacies of the Burns formation. The rocks along the Endeavour Crater rim were affected by at least four episodes of alteration in the Noachian and Early Hesperian: (i) vein formation and alteration of pre-impact Matijevic formation rocks; (ii) low-water/rock alteration along the disconformity between the Matijevic and Shoemaker formations; (iii) alteration of the Shoemaker formation along fracture zones; and (iv) differential mobilization of Fe and Mn, and CaSO4-vein formation in the Grasberg and Shoemaker formations. Episodes (ii) and (iii) possibly occurred together, but (i) and (iv) are distinct from either of these.en_UK
dc.language.isoenen_UK
dc.publisherAmerican Geophysical Union (AGU)en_UK
dc.relationMittlefehldt D, Gellert R, VanBommel S, Ming D, Yen A, Clark BC, Morris R, Schröder C, Crumpler LS, Grant JA, Jolliff BL, Arvidson RE, Farrand WH, Herkenhoff KE, Bell J, Cohen B, Klingelhöfer G, Schrader C & Rice J (2018) Diverse Lithologies and Alteration Events on the Rim of Noachian-Aged Endeavour Crater, Meridiani Planum, Mars: In-Situ Compositional Evidence. Journal of Geophysical Research: Planets, 123 (5), pp. 1255-1306. https://doi.org/10.1002/2017JE005474en_UK
dc.rights[820292_2_merged_1518031799.pdf] The publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study.en_UK
dc.rights[Mittlefehldt_et_al-2018-Journal_of_Geophysical_Research3A_Planets.pdf] Mittlefehldt, D. W., Gellert, R., vanBommel, S., Ming, D. W., Yen, A. S., Clark, B. C., et al. ( 2018). Diverse lithologies and alteration events on the rim of Noachian‐aged Endeavour crater, Meridiani Planum, Mars: In situ compositional evidence. Journal of Geophysical Research: Planets, 123, 1255– 1306. https://doi.org/10.1002/2017JE005474en_UK
dc.subjectMars Exploration Roveren_UK
dc.subjectEndeavour Crateren_UK
dc.subjectgeochemistryen_UK
dc.subjectimpact brecciaen_UK
dc.subjectMars alterationen_UK
dc.titleDiverse Lithologies and Alteration Events on the Rim of Noachian-Aged Endeavour Crater, Meridiani Planum, Mars: In-Situ Compositional Evidenceen_UK
dc.typeJournal Articleen_UK
dc.rights.embargodate2018-08-21en_UK
dc.rights.embargoreason[820292_2_merged_1518031799.pdf] The publisher does not allow this work to be made publicly available in this Repository therefore there is an embargo on the full text of the work.en_UK
dc.rights.embargoreason[2017JE005474R-SI01.pdf] Until this work is formally published there will be an embargo on the full text of this work.en_UK
dc.identifier.doi10.1002/2017JE005474en_UK
dc.citation.jtitleJournal of Geophysical Research: Planetsen_UK
dc.citation.issn2169-9100en_UK
dc.citation.issn2169-9097en_UK
dc.citation.volume123en_UK
dc.citation.issue5en_UK
dc.citation.spage1255en_UK
dc.citation.epage1306en_UK
dc.citation.publicationstatusPublisheden_UK
dc.citation.peerreviewedRefereeden_UK
dc.type.statusAM - Accepted Manuscripten_UK
dc.type.statusAM - Accepted Manuscripten_UK
dc.type.statusVoR - Version of Recorden_UK
dc.contributor.funderScience & Technology Facilities Councilen_UK
dc.author.emailchristian.schroeder@stir.ac.uken_UK
dc.citation.date20/02/2018en_UK
dc.contributor.affiliationNASA Johnson Space Centeren_UK
dc.contributor.affiliationUniversity of Guelphen_UK
dc.contributor.affiliationUniversity of Guelphen_UK
dc.contributor.affiliationNASA Johnson Space Centeren_UK
dc.contributor.affiliationSpace Science Instituteen_UK
dc.contributor.affiliationNASA Johnson Space Centeren_UK
dc.contributor.affiliationBiological and Environmental Sciencesen_UK
dc.contributor.affiliationNew Mexico Museum of Natural History and Scienceen_UK
dc.contributor.affiliationSmithsonianen_UK
dc.contributor.affiliationWashington University In Saint Louisen_UK
dc.contributor.affiliationWashington University In Saint Louisen_UK
dc.contributor.affiliationSpace Science Instituteen_UK
dc.contributor.affiliationU.S. Geological Surveyen_UK
dc.contributor.affiliationArizona State Universityen_UK
dc.contributor.affiliationNASA Goddard Space Flight Centeren_UK
dc.contributor.affiliationJohannes Gutenberg University of Mainzen_UK
dc.contributor.affiliationState University of New York at Potsdamen_UK
dc.contributor.affiliationPlanetary Science Instituteen_UK
dc.identifier.isiWOS:000434972500016en_UK
dc.identifier.scopusid2-s2.0-85045547448en_UK
dc.identifier.wtid500297en_UK
dc.contributor.orcid0000-0002-7935-6039en_UK
dc.date.accepted2018-02-08en_UK
dc.date.filedepositdate2018-02-13en_UK
dc.relation.funderprojectContinued geochemical investigation of Noachian crust at Endeavour Crater with Mars Exploration Rover Opportunityen_UK
dc.relation.funderrefST/R001278/1en_UK
Appears in Collections:Biological and Environmental Sciences Journal Articles

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