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      Constraining the formation and transport of lunar impact glasses using the ages and chemical compositions of Chang’e-5 glass beads

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          Abstract

          Impact glasses found in lunar soils provide a possible window into the impact history of the inner solar system. However, their use for precise reconstruction of this history is limited by an incomplete understanding of the physical mechanisms responsible for their origin and distribution and possible relationships to local and regional geology. Here, we report U-Pb isotopic dates and chemical compositions of impact glasses from the Chang’e-5 soil and quantitative models of impact melt formation and ejection that account for the compositions of these glasses. The predominantly local provenance indicated by their compositions, which constrains transport distances to <~150 kilometers, and the age-frequency distribution are consistent with formation mainly in impact craters 1 to 5 kilometers in diameter. Based on geological mapping and impact cratering theory, we tentatively identify specific craters on the basaltic unit sampled by Chang’e-5 that may have produced these glasses and compare their ages with the impact record of the asteroid belt.

          Abstract

          Abstract

          The chronology of Chang’e-5 impact glasses suggests a dynamical link between lunar impacts and collisions in the asteroid belt.

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          Correction of common lead in U–Pb analyses that do not report 204Pb

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            Volatile content of lunar volcanic glasses and the presence of water in the Moon's interior.

            The Moon is generally thought to have formed and evolved through a single or a series of catastrophic heating events, during which most of the highly volatile elements were lost. Hydrogen, being the lightest element, is believed to have been completely lost during this period. Here we make use of considerable advances in secondary ion mass spectrometry to obtain improved limits on the indigenous volatile (CO(2), H(2)O, F, S and Cl) contents of the most primitive basalts in the Moon-the lunar volcanic glasses. Although the pre-eruptive water content of the lunar volcanic glasses cannot be precisely constrained, numerical modelling of diffusive degassing of the very-low-Ti glasses provides a best estimate of 745 p.p.m. water, with a minimum of 260 p.p.m. at the 95 per cent confidence level. Our results indicate that, contrary to prevailing ideas, the bulk Moon might not be entirely depleted in highly volatile elements, including water. Thus, the presence of water must be considered in models constraining the Moon's formation and its thermal and chemical evolution.
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              On the Treatment of Concordant Uranium-Lead Ages

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                Author and article information

                Contributors
                Role: ConceptualizationRole: Formal analysisRole: Funding acquisitionRole: InvestigationRole: MethodologyRole: Project administrationRole: ResourcesRole: SupervisionRole: ValidationRole: Writing - original draftRole: Writing - review & editing
                Role: ConceptualizationRole: Data curationRole: Formal analysisRole: InvestigationRole: MethodologyRole: ResourcesRole: SoftwareRole: ValidationRole: VisualizationRole: Writing - original draftRole: Writing - review & editing
                Role: ConceptualizationRole: Data curationRole: MethodologyRole: Project administrationRole: SupervisionRole: ValidationRole: VisualizationRole: Writing - original draft
                Role: Formal analysisRole: InvestigationRole: MethodologyRole: SoftwareRole: VisualizationRole: Writing - original draftRole: Writing - review & editing
                Role: Formal analysisRole: VisualizationRole: Writing - review & editing
                Role: ConceptualizationRole: Formal analysisRole: InvestigationRole: MethodologyRole: Writing - review & editing
                Role: Data curationRole: Formal analysisRole: InvestigationRole: MethodologyRole: ResourcesRole: ValidationRole: Writing - review & editing
                Role: MethodologyRole: Writing - review & editing
                Role: ConceptualizationRole: Writing - original draftRole: Writing - review & editing
                Role: ValidationRole: Writing - review & editing
                Role: ValidationRole: Writing - review & editing
                Role: ConceptualizationRole: MethodologyRole: SoftwareRole: VisualizationRole: Writing - review & editing
                Role: ConceptualizationRole: Writing - original draftRole: Writing - review & editing
                Role: ConceptualizationRole: MethodologyRole: Writing - review & editing
                Role: ConceptualizationRole: Formal analysisRole: Writing - review & editing
                Role: ValidationRole: Writing - review & editing
                Role: Investigation
                Role: ValidationRole: Writing - review & editing
                Role: ValidationRole: Writing - review & editing
                Role: ValidationRole: Writing - review & editing
                Role: ConceptualizationRole: Writing - review & editing
                Role: ConceptualizationRole: Funding acquisitionRole: InvestigationRole: ResourcesRole: SupervisionRole: ValidationRole: Writing - review & editing
                Role: ConceptualizationRole: Formal analysisRole: MethodologyRole: Project administrationRole: SoftwareRole: SupervisionRole: ValidationRole: VisualizationRole: Writing - original draftRole: Writing - review & editing
                Journal
                Sci Adv
                Sci Adv
                sciadv
                advances
                Science Advances
                American Association for the Advancement of Science
                2375-2548
                September 2022
                28 September 2022
                : 8
                : 39
                Affiliations
                [ 1 ]Beijing SHRIMP Center, Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China.
                [ 2 ]Planetary Science Institute, School of Earth Sciences, China University of Geosciences, Wuhan 430074, China.
                [ 3 ]Research School of Earth Sciences, The Australian National University, Canberra, ACT 2601 Australia.
                [ 4 ]School of Earth and Planetary Sciences, Curtin University, GPO Box U1987, Perth, WA 6845, Australia.
                [ 5 ]Department of Geological Sciences, University of Colorado Boulder, Boulder, CO 80309, USA.
                [ 6 ]Department of Earth, Environmental, and Planetary Sciences, Brown University, Providence, RI 02912, USA.
                [ 7 ]Department of Earth and Environmental Sciences, The University of Manchester, Manchester, M13 9PL, UK.
                [ 8 ]Department of Physics, Albion College, Albion, MI 49224, USA.
                [ 9 ]Shandong Institute of Geological Sciences, Jinan, Shandong 250013, China.
                [ 10 ]Department of Geosciences, Swedish Museum of Natural History, SE-104 05 Stockholm, Sweden.
                [ 11 ]Department of Civil and Environmental Engineering and Earth Sciences, University of Notre Dame, Notre Dame, IN 46556, USA.
                Author notes
                [* ]Corresponding author. Email: longtao@ 123456bjshrimp.cn
                [†]

                These authors contributed equally to this work.

                Article
                abq2542
                10.1126/sciadv.abq2542
                9519047
                36170359
                d13c11e7-c582-4310-98f7-34abaa280623
                Copyright © 2022 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution License 4.0 (CC BY).

                This is an open-access article distributed under the terms of the Creative Commons Attribution license, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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                Funding
                Funded by: FundRef http://dx.doi.org/10.13039/501100000271, Science and Technology Facilities Council;
                Award ID: ST/V000675/1
                Funded by: FundRef http://dx.doi.org/10.13039/501100000271, Science and Technology Facilities Council;
                Award ID: ST/P005225/1
                Funded by: FundRef http://dx.doi.org/10.13039/501100001809, National Natural Science Foundation of China;
                Award ID: 41842045
                Funded by: The Royal Society;
                Award ID: URF\R\201009
                Funded by: Swedish Research Council grant;
                Award ID: 2021-04920
                Funded by: China National Space Administration (CNSA);
                Award ID: D020204
                Funded by: China National Space Administration (CNSA);
                Award ID: D020203
                Funded by: China National Space Administration (CNSA);
                Award ID: D020205
                Funded by: The National Key R & D Program of China from Ministry of Science and Technology of the People’s Republic of China;
                Award ID: 2020YFE0202100
                Funded by: China National Space Administration (CNSA);
                Award ID: D020101
                Funded by: The National Key R & D Program of China from Ministry of Science and Technology of the People’s Republic of China;
                Award ID: 2020YFE0202100
                Funded by: The Australian Research Council (ARC);
                Award ID: FT210100063
                Categories
                Research Article
                Earth, Environmental, Ecological, and Space Sciences
                SciAdv r-articles
                Geochemistry
                Planetary Science
                Planetary Science
                Custom metadata
                Mjoy Azul

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