1
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Liu J, Qin X, Ren X, Wang X, Sun Y, Zeng X, Wu H, Chen Z, Chen W, Chen Y, Wang C, Sun Z, Zhang R, Ouyang Z, Guo Z, Head JW, Li C. Martian dunes indicative of wind regime shift in line with end of ice age. Nature 2023; 620:303-309. [PMID: 37407822 PMCID: PMC10412455 DOI: 10.1038/s41586-023-06206-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Accepted: 05/12/2023] [Indexed: 07/07/2023]
Abstract
Orbital observations suggest that Mars underwent a recent 'ice age' (roughly 0.4-2.1 million years ago), during which a latitude-dependent ice-dust mantle (LDM)1,2 was emplaced. A subsequent decrease in obliquity amplitude resulted in the emergence of an 'interglacial period'1,3 during which the lowermost latitude LDM ice4-6 was etched and removed, returning it to the polar cap. These observations are consistent with polar cap stratigraphy1,7, but lower- to mid-latitude in situ surface observations in support of a glacial-interglacial transition that can be reconciled with mesoscale and global atmospheric circulation models8 is lacking. Here we present a suite of measurements obtained by the Zhurong rover during its traverse across the southern LDM region in Utopia Planitia, Mars. We find evidence for a stratigraphic sequence involving initial barchan dune formation, indicative of north-easterly winds, cementation of dune sediments, followed by their erosion by north-westerly winds, eroding the barchan dunes and producing distinctive longitudinal dunes, with the transition in wind regime consistent with the end of the ice age. The results are compatible with the Martian polar stratigraphic record and will help improve our understanding of the ancient climate history of Mars9.
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Affiliation(s)
- Jianjun Liu
- Key Laboratory of Lunar and Deep Space Exploration, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, China
| | - Xiaoguang Qin
- Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China
| | - Xin Ren
- Key Laboratory of Lunar and Deep Space Exploration, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, China
| | - Xu Wang
- Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China
| | - Yong Sun
- State Key Laboratory of Tibetan Plateau Earth System, Resources and Environment, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China
| | - Xingguo Zeng
- Key Laboratory of Lunar and Deep Space Exploration, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, China
| | - Haibin Wu
- Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China
| | - Zhaopeng Chen
- Key Laboratory of Lunar and Deep Space Exploration, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, China
| | - Wangli Chen
- Key Laboratory of Lunar and Deep Space Exploration, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, China
| | - Yuan Chen
- Key Laboratory of Lunar and Deep Space Exploration, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, China
| | - Cheng Wang
- Beijing Aerospace Control Center, Beijing, China
| | - Zezhou Sun
- Beijing Institute of Spacecraft System Engineering, Beijing, China
| | - Rongqiao Zhang
- Lunar Exploration and Space Engineering Center, Beijing, China
| | - Ziyuan Ouyang
- Key Laboratory of Lunar and Deep Space Exploration, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, China
- Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, China
| | - Zhengtang Guo
- Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China.
| | - James W Head
- Department of Earth, Environmental and Planetary Sciences, Brown University, Providence, RI, USA.
| | - Chunlai Li
- Key Laboratory of Lunar and Deep Space Exploration, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, China.
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2
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Abstract
Many discoveries of active surface processes on Mars have been made due to the availability of repeat high-resolution images from the High Resolution Imaging Science Experiment (HiRISE) onboard the Mars Reconnaissance Orbiter. HiRISE stereo images are used to make digital terrain models (DTMs) and orthorectified images (orthoimages). HiRISE DTMs and orthoimage time series have been crucial for advancing the study of active processes such as recurring slope lineae, dune migration, gully activity, and polar processes. We describe the process of making HiRISE DTMs, orthoimage time series, DTM mosaics, and the difference of DTMs, specifically using the ISIS/SOCET Set workflow. HiRISE DTMs are produced at a 1 and 2 m ground sample distance, with a corresponding estimated vertical precision of tens of cm and ∼1 m, respectively. To date, more than 6000 stereo pairs have been acquired by HiRISE and, of these, more than 800 DTMs and 2700 orthoimages have been produced and made available to the public via the Planetary Data System. The intended audiences of this paper are producers, as well as users, of HiRISE DTMs and orthoimages. We discuss the factors that determine the effective resolution, as well as the quality, precision, and accuracy of HiRISE DTMs, and provide examples of their use in time series analyses of active surface processes on Mars.
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3
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Dundas CM, Becerra P, Byrne S, Chojnacki M, Daubar IJ, Diniega S, Hansen CJ, Herkenhoff KE, Landis ME, McEwen AS, Portyankina G, Valantinas A. Active Mars: A Dynamic World. JOURNAL OF GEOPHYSICAL RESEARCH. PLANETS 2021; 126:e2021JE006876. [PMID: 35845553 PMCID: PMC9285055 DOI: 10.1029/2021je006876] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 06/17/2021] [Accepted: 06/21/2021] [Indexed: 06/15/2023]
Abstract
Mars exhibits diverse surface changes at all latitudes and all seasons. Active processes include impact cratering, aeolian sand and dust transport, a variety of slope processes, changes in polar ices, and diverse effects of seasonal CO2 frost. The extent of surface change has been surprising and indicates that the present climate is capable of reshaping the surface. Activity has important implications for the Amazonian history of Mars: understanding processes is a necessary step before we can understand their implications and variations over time.
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Affiliation(s)
- Colin M. Dundas
- U.S. Geological SurveyAstrogeology Science CenterFlagstaffAZUSA
| | | | - Shane Byrne
- Lunar and Planetary LaboratoryUniversity of ArizonaTucsonAZUSA
| | | | - Ingrid J. Daubar
- Department of Earth, Environmental, and Planetary SciencesBrown UniversityProvidenceRIUSA
| | - Serina Diniega
- Jet Propulsion Laboratory/California Institute of TechnologyPasadenaCAUSA
| | | | | | - Margaret E. Landis
- Laboratory for Atmospheric and Space PhysicsUniversity of ColoradoBoulderCOUSA
| | | | - Ganna Portyankina
- Laboratory for Atmospheric and Space PhysicsUniversity of ColoradoBoulderCOUSA
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4
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Silvestro S, Pacifici A, Salese F, Vaz D, Neesemann A, Tirsch D, Popa C, Pajola M, Franzese G, Mongelluzzo G, Ruggeri A, Cozzolino F, Porto C, Esposito F. Periodic Bedrock Ridges at the ExoMars 2022 Landing Site: Evidence for a Changing Wind Regime. GEOPHYSICAL RESEARCH LETTERS 2021; 48:e2020GL091651. [PMID: 33776161 PMCID: PMC7988568 DOI: 10.1029/2020gl091651] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 12/21/2020] [Accepted: 12/23/2020] [Indexed: 06/12/2023]
Abstract
Wind-formed features are abundant in Oxia Planum (Mars), the landing site of the 2022 ExoMars mission, which shows geological evidence for a past wet environment. Studies of aeolian bedforms at the landing site were focused on assessing the risk for rover trafficability, however their potential in recording climatic fluctuations has not been explored. Here we show that the landing site experienced multiple climatic changes in the Amazonian, which are recorded by an intriguing set of ridges that we interpret as Periodic Bedrock Ridges (PBRs). Clues for a PBR origin result from ridge regularity, defect terminations, and the presence of preserved megaripples detaching from the PBRs. PBR orientation differs from superimposed transverse aeolian ridges pointing toward a major change in wind regime. Our results provide constrains on PBR formation mechanisms and offer indications on paleo winds that will be crucial for understanding the landing site geology.
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Affiliation(s)
- S. Silvestro
- Istituto Nazionale di Astrofisica (INAF)Osservatorio Astronomico di CapodimonteNapoliItaly
- Carl Sagan CenterSETI InstituteMountain ViewCAUSA
| | - A. Pacifici
- International Research School of Planetary SciencesUniversità Gabriele D'AnnunzioPescaraItaly
| | - F. Salese
- International Research School of Planetary SciencesUniversità Gabriele D'AnnunzioPescaraItaly
- Centro de AstrobiologíaCSIC‐INTAMadridSpain
| | - D.A. Vaz
- Centre for Earth and Space Research of the University of CoimbraObservatório Geofísico e Astronómico da Universidade de CoimbraCoimbraPortugal
| | | | - D. Tirsch
- German Aerospace Center (DLR)Institute of Planetary ResearchBerlinGermany
| | - C.I. Popa
- Istituto Nazionale di Astrofisica (INAF)Osservatorio Astronomico di CapodimonteNapoliItaly
| | - M. Pajola
- Istituto Nazionale di Astrofisica (INAF)Osservatorio Astronomico di PadovaPadovaItaly
| | - G. Franzese
- Istituto Nazionale di Astrofisica (INAF)Osservatorio Astronomico di CapodimonteNapoliItaly
| | - G. Mongelluzzo
- Istituto Nazionale di Astrofisica (INAF)Osservatorio Astronomico di CapodimonteNapoliItaly
- Department of Industrial EngineeringUniversità di Napoli “Federico II”NapoliItaly
| | - A.C. Ruggeri
- Istituto Nazionale di Astrofisica (INAF)Osservatorio Astronomico di CapodimonteNapoliItaly
| | - F. Cozzolino
- Istituto Nazionale di Astrofisica (INAF)Osservatorio Astronomico di CapodimonteNapoliItaly
| | - C. Porto
- Istituto Nazionale di Astrofisica (INAF)Osservatorio Astronomico di CapodimonteNapoliItaly
| | - F. Esposito
- Istituto Nazionale di Astrofisica (INAF)Osservatorio Astronomico di CapodimonteNapoliItaly
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5
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Dundas CM, Mellon MT, Conway SJ, Gastineau R. Active Boulder Movement at High Martian Latitudes. GEOPHYSICAL RESEARCH LETTERS 2019; 46:5075-5082. [PMID: 31423033 PMCID: PMC6686660 DOI: 10.1029/2019gl082293] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 04/04/2019] [Accepted: 04/22/2019] [Indexed: 06/10/2023]
Abstract
Lobate stony landforms occur on steep slopes at high latitudes on Mars. We demonstrate active boulder movement at seven such sites. Submeter-scale boulders frequently move distances of a few meters. The movement is concentrated in the vicinity of the lobate landforms but also occurs on other slopes. This provides evidence for a newly discovered, common style of activity on Mars, which may play an important role in slope degradation. It also opens the possibility that the lobate features are currently forming in the absence of significant volumes of liquid water.
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Affiliation(s)
- Colin M. Dundas
- U.S. Geological SurveyAstrogeology Science CenterFlagstaffAZUSA
| | - Michael T. Mellon
- Center for Astrophysics and Planetary ScienceCornell UniversityIthacaNYUSA
| | - Susan J. Conway
- CNRS UMR6112 Laboratoire de Planétologie et Géodynamique, Université de NantesNantesFrance
| | - Renaldo Gastineau
- CNRS UMR6112 Laboratoire de Planétologie et Géodynamique, Université de NantesNantesFrance
- Université Grenoble Alpes, Université Savoie Mont Blanc, CNRS, IRD, IFSTTAR, ISTerreGrenobleFrance
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6
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Bak EN, Larsen MG, Jensen SK, Nørnberg P, Moeller R, Finster K. Wind-Driven Saltation: An Overlooked Challenge for Life on Mars. ASTROBIOLOGY 2019; 19:497-505. [PMID: 30407074 DOI: 10.1089/ast.2018.1856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Numerous studies have demonstrated that the martian surface environment is hostile to life because of its rough radiation climate and the reactive chemistry of the regolith. Physical processes such as erosion and transport of mineral particles by wind-driven saltation have hitherto not been considered as a life hazard. We report a series of experiments where bacterial endospores (spores of Bacillus subtilis) were exposed to a simulated saltating martian environment. We observed that 50% of the spores that are known to be highly resistant to radiation and oxidizing chemicals were destroyed by saltation-mediated abrasion within one minute. Scanning electron micrographs show that the spores were not only damaged by abrasion but were eradicated during the saltation process. We suggest that abrasion mediated by wind-driven saltation should be included as a factor that defines the habitability of the martian surface environment. The process may efficiently protect the martian surface from forward contamination with terrestrial microbial life-forms. Abrasion mediated by wind-driven saltation should also be considered as a major challenge to indigenous martian surface life if it exists/existed.
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Affiliation(s)
- E N Bak
- 1 Department of Bioscience, Aarhus University , Aarhus, Denmark
| | - M G Larsen
- 1 Department of Bioscience, Aarhus University , Aarhus, Denmark
| | - S K Jensen
- 2 Department of Chemistry, Aarhus University , Aarhus, Denmark
| | - P Nørnberg
- 1 Department of Bioscience, Aarhus University , Aarhus, Denmark
| | - R Moeller
- 3 Institute of Aerospace Medicine , Radiation Biology Department, Space Microbiology Research Group, German Aerospace Center (DLR e.V.), Cologne (Köln), Germany
| | - K Finster
- 1 Department of Bioscience, Aarhus University , Aarhus, Denmark
- 4 Stellar Astrophysics Centre, Department of Physics and Astronomy, Aarhus University , Aarhus, Denmark
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7
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Rogers AD, Warner NH, Golombek MP, Head JW, Cowart JC. Areally Extensive Surface Bedrock Exposures on Mars: Many Are Clastic Rocks, Not Lavas. GEOPHYSICAL RESEARCH LETTERS 2018; 45:1767-1777. [PMID: 30598561 PMCID: PMC6310033 DOI: 10.1002/2018gl077030] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Areally extensive exposures of intact olivine/pyroxene-enriched rock, as well as feldspar-enriched rock, are found in isolated locations throughout the Martian highlands. The petrogenetic origin(s) of these rock units are not well understood, but some previous studies favored an effusive volcanic origin partly on the basis of distinctive composition and relatively high thermal inertia. Here we show that the regolith development, crater retention, and morphological characteristics for many of these "bedrock plains" are not consistent with competent lavas and reinterpret the high thermal inertia orbital signatures to represent friable materials that are more easily kept free of comminution products through eolian activity. Candidate origins include pyroclastic rocks, impact-generated materials, or detrital sedimentary rocks. Olivine/pyroxene enrichments in bedrock plains relative to surrounding materials could have potentially formed through deflation and preferential removal of plagioclase.
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Affiliation(s)
- A Deanne Rogers
- Department of Geosciences, Stony Brook University, Stony Brook, NY, USA
| | - Nicholas H Warner
- Department of Geological Sciences, State University of New York at Geneseo, Geneseo, NY, USA
| | - Matthew P Golombek
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
| | - James W Head
- Department of Earth, Environmental and Planetary Sciences, Brown University, Providence, RI, USA
| | - Justin C Cowart
- Department of Geosciences, Stony Brook University, Stony Brook, NY, USA
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8
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Chojnacki M, Banks M, Urso A. Wind-Driven Erosion and Exposure Potential at Mars 2020 Rover Candidate-Landing Sites. JOURNAL OF GEOPHYSICAL RESEARCH. PLANETS 2018; 123:468-488. [PMID: 29568719 PMCID: PMC5859260 DOI: 10.1002/2017je005460] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Aeolian processes have likely been the predominant geomorphic agent for most of Mars' history and have the potential to produce relatively young exposure ages for geologic units. Thus, identifying local evidence for aeolian erosion is highly relevant to the selection of landing sites for future missions, such as the Mars 2020 Rover mission that aims to explore astrobiologically relevant ancient environments. Here we investigate wind-driven activity at eight Mars 2020 candidate-landing sites to constrain erosion potential at these locations. To demonstrate our methods, we found that contemporary dune-derived abrasion rates were in agreement with rover-derived exhumation rates at Gale crater and could be employed elsewhere. The Holden crater candidate site was interpreted to have low contemporary erosion rates, based on the presence of a thick sand coverage of static ripples. Active ripples at the Eberswalde and southwest Melas sites may account for local erosion and the dearth of small craters. Moderate-flux regional dunes near Mawrth Vallis were deemed unrepresentative of the candidate site, which is interpreted to currently be experiencing low levels of erosion. The Nili Fossae site displayed the most unambiguous evidence for local sand transport and erosion, likely yielding relatively young exposure ages. The downselected Jezero crater and northeast Syrtis sites had high-flux neighboring dunes and exhibited substantial evidence for sediment pathways across their ellipses. Both sites had relatively high estimated abrasion rates, which would yield young exposure ages. The downselected Columbia Hills site lacked evidence for sand movement, and contemporary local erosion rates are estimated to be relatively low.
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Affiliation(s)
- Matthew Chojnacki
- Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA
| | - Maria Banks
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - Anna Urso
- Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA
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9
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Blake DF, Morris RV, Kocurek G, Morrison SM, Downs RT, Bish D, Ming DW, Edgett KS, Rubin D, Goetz W, Madsen MB, Sullivan R, Gellert R, Campbell I, Treiman AH, McLennan SM, Yen AS, Grotzinger J, Vaniman DT, Chipera SJ, Achilles CN, Rampe EB, Sumner D, Meslin PY, Maurice S, Forni O, Gasnault O, Fisk M, Schmidt M, Mahaffy P, Leshin LA, Glavin D, Steele A, Freissinet C, Navarro-González R, Yingst RA, Kah LC, Bridges N, Lewis KW, Bristow TF, Farmer JD, Crisp JA, Stolper EM, Des Marais DJ, Sarrazin P. Curiosity at Gale crater, Mars: characterization and analysis of the Rocknest sand shadow. Science 2013; 341:1239505. [PMID: 24072928 DOI: 10.1126/science.1239505] [Citation(s) in RCA: 231] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The Rocknest aeolian deposit is similar to aeolian features analyzed by the Mars Exploration Rovers (MERs) Spirit and Opportunity. The fraction of sand <150 micrometers in size contains ~55% crystalline material consistent with a basaltic heritage and ~45% x-ray amorphous material. The amorphous component of Rocknest is iron-rich and silicon-poor and is the host of the volatiles (water, oxygen, sulfur dioxide, carbon dioxide, and chlorine) detected by the Sample Analysis at Mars instrument and of the fine-grained nanophase oxide component first described from basaltic soils analyzed by MERs. The similarity between soils and aeolian materials analyzed at Gusev Crater, Meridiani Planum, and Gale Crater implies locally sourced, globally similar basaltic materials or globally and regionally sourced basaltic components deposited locally at all three locations.
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Affiliation(s)
- D F Blake
- National Aeronautics and Space Administration Ames Research Center, Moffett Field, CA 94035, USA.
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10
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Chojnacki M, Burr DM, Moersch JE, Michaels TI. Orbital observations of contemporary dune activity in Endeavor crater, Meridiani Planum, Mars. ACTA ACUST UNITED AC 2011. [DOI: 10.1029/2010je003675] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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11
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Sullivan R, Anderson R, Biesiadecki J, Bond T, Stewart H. Cohesions, friction angles, and other physical properties of Martian regolith from Mars Exploration Rover wheel trenches and wheel scuffs. ACTA ACUST UNITED AC 2011. [DOI: 10.1029/2010je003625] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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12
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Arvidson RE, Ashley JW, Bell JF, Chojnacki M, Cohen J, Economou TE, Farrand WH, Fergason R, Fleischer I, Geissler P, Gellert R, Golombek MP, Grotzinger JP, Guinness EA, Haberle RM, Herkenhoff KE, Herman JA, Iagnemma KD, Jolliff BL, Johnson JR, Klingelhöfer G, Knoll AH, Knudson AT, Li R, McLennan SM, Mittlefehldt DW, Morris RV, Parker TJ, Rice MS, Schröder C, Soderblom LA, Squyres SW, Sullivan RJ, Wolff MJ. Opportunity Mars Rover mission: Overview and selected results from Purgatory ripple to traverses to Endeavour crater. ACTA ACUST UNITED AC 2011. [DOI: 10.1029/2010je003746] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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13
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Wray JJ, Milliken RE, Dundas CM, Swayze GA, Andrews-Hanna JC, Baldridge AM, Chojnacki M, Bishop JL, Ehlmann BL, Murchie SL, Clark RN, Seelos FP, Tornabene LL, Squyres SW. Columbus crater and other possible groundwater-fed paleolakes of Terra Sirenum, Mars. ACTA ACUST UNITED AC 2011. [DOI: 10.1029/2010je003694] [Citation(s) in RCA: 121] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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14
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Grotzinger J, Beaty D, Dromart G, Gupta S, Harris M, Hurowitz J, Kocurek G, McLennan S, Milliken R, Ori GG, Sumner D. Mars sedimentary geology: key concepts and outstanding questions. ASTROBIOLOGY 2011; 11:77-87. [PMID: 21294660 DOI: 10.1089/ast.2010.0571] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Affiliation(s)
- John Grotzinger
- Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, California 91106, USA.
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15
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Chappelow JE, Golombek MP. Event and conditions that produced the iron meteorite Block Island on Mars. ACTA ACUST UNITED AC 2010. [DOI: 10.1029/2010je003666] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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