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- W3058709972 endingPage "114064" @default.
- W3058709972 startingPage "114064" @default.
- W3058709972 abstract "Late accretion is a process that strongly modulated surface geomorphic and geochemical features of Mercury. Yet, the fate of the impactors and their effects on Mercury's surface through the bombardment epoch are not clear. Using Monte-Carlo and analytical approaches of cratering impacts, we investigate the physical and thermodynamical outcomes of late accretion on Mercury. Considering the uncertainties in late accretion, we develop scaling laws for the following parameters as a function of impact velocity and total mass of late accretion: (1) depth of crustal erosion, (2) the degree of resurfacing, and (3) mass accreted from impactor material. Existing dynamical models indicate that Mercury experienced an intense impact bombardment (a total mass of $sim 8 times 10^{18} - 8 times 10^{20}$ kg with a typical impact velocity of $30-40$ km s$^{-1}$) after $4.5$ Ga. With this, we find that late accretion could remove 50 m to 10 km of the early crust of Mercury, but the change to its core-to-mantle ratio is negligible. Alternatively, the mantles of putative differentiated planetesimals in the early solar system could be more easily removed and their respective core fraction increased, if Mercury ultimately accreted from such objects. Although the cratering is notable for erasing the older geological surface records on Mercury, we show that $sim 40-50$ wt% of the impactor's exogenic materials, including the volatile-bearing materials, can be heterogeneously implanted on Mercury's surface as a late veneer ($>3times 10^{18}-1.6 times 10^{19}$ kg in total). About half of the accreted impactor's materials are vaporized, and the rest is completely melted upon the impact. We expect that the further interplay between our theoretical results and forthcoming surface observations of Mercury, including the BepiColombo mission, will lead us to a better understanding of Mercury's origin and evolution." @default.
- W3058709972 created "2020-08-24" @default.
- W3058709972 creator A5040715153 @default.
- W3058709972 creator A5063739007 @default.
- W3058709972 creator A5071919897 @default.
- W3058709972 date "2021-01-01" @default.
- W3058709972 modified "2023-10-15" @default.
- W3058709972 title "Modification of the composition and density of Mercury from late accretion" @default.
- W3058709972 cites W1482181467 @default.
- W3058709972 cites W1534961242 @default.
- W3058709972 cites W1561936305 @default.
- W3058709972 cites W1708336720 @default.
- W3058709972 cites W1869428633 @default.
- W3058709972 cites W1963088560 @default.
- W3058709972 cites W1968894095 @default.
- W3058709972 cites W1971212684 @default.
- W3058709972 cites W1973719681 @default.
- W3058709972 cites W1976376797 @default.
- W3058709972 cites W1976717244 @default.
- W3058709972 cites W1977817695 @default.
- W3058709972 cites W1979075506 @default.
- W3058709972 cites W1980448959 @default.
- W3058709972 cites W1985164447 @default.
- W3058709972 cites W1986023560 @default.
- W3058709972 cites W1989236769 @default.
- W3058709972 cites W1990398892 @default.
- W3058709972 cites W1992167261 @default.
- W3058709972 cites W2001030150 @default.
- W3058709972 cites W2012634700 @default.
- W3058709972 cites W2014465821 @default.
- W3058709972 cites W2016335127 @default.
- W3058709972 cites W2017171309 @default.
- W3058709972 cites W2017989933 @default.
- W3058709972 cites W2022468791 @default.
- W3058709972 cites W2023997504 @default.
- W3058709972 cites W2027135516 @default.
- W3058709972 cites W2032076019 @default.
- W3058709972 cites W2036786814 @default.
- W3058709972 cites W2040527762 @default.
- W3058709972 cites W2041357558 @default.
- W3058709972 cites W2044377718 @default.
- W3058709972 cites W2047079762 @default.
- W3058709972 cites W2053528212 @default.
- W3058709972 cites W2078774206 @default.
- W3058709972 cites W2078903110 @default.
- W3058709972 cites W2080093888 @default.
- W3058709972 cites W2081562714 @default.
- W3058709972 cites W2083004092 @default.
- W3058709972 cites W2087549585 @default.
- W3058709972 cites W2087805859 @default.
- W3058709972 cites W2088129236 @default.
- W3058709972 cites W2092917902 @default.
- W3058709972 cites W2122440454 @default.
- W3058709972 cites W2128285906 @default.
- W3058709972 cites W2128354177 @default.
- W3058709972 cites W2144843250 @default.
- W3058709972 cites W2157406996 @default.
- W3058709972 cites W2170490486 @default.
- W3058709972 cites W2294569605 @default.
- W3058709972 cites W2302519020 @default.
- W3058709972 cites W2486332874 @default.
- W3058709972 cites W2513535322 @default.
- W3058709972 cites W2517740909 @default.
- W3058709972 cites W2519355055 @default.
- W3058709972 cites W2578022441 @default.
- W3058709972 cites W2583104336 @default.
- W3058709972 cites W2607474804 @default.
- W3058709972 cites W2760541055 @default.
- W3058709972 cites W2770538144 @default.
- W3058709972 cites W2773779350 @default.
- W3058709972 cites W2780496924 @default.
- W3058709972 cites W2782794416 @default.
- W3058709972 cites W2791155018 @default.
- W3058709972 cites W2905339950 @default.
- W3058709972 cites W2959032598 @default.
- W3058709972 cites W2962619068 @default.
- W3058709972 cites W2965458869 @default.
- W3058709972 cites W2983754864 @default.
- W3058709972 cites W3013416397 @default.
- W3058709972 cites W3034001920 @default.
- W3058709972 cites W3101100508 @default.
- W3058709972 cites W3101785751 @default.
- W3058709972 cites W3103365476 @default.
- W3058709972 cites W3104014184 @default.
- W3058709972 cites W3104864079 @default.
- W3058709972 cites W3105475593 @default.
- W3058709972 cites W3105670959 @default.
- W3058709972 cites W3105692524 @default.
- W3058709972 cites W343790030 @default.
- W3058709972 cites W4230969046 @default.
- W3058709972 cites W794599698 @default.
- W3058709972 doi "https://doi.org/10.1016/j.icarus.2020.114064" @default.
- W3058709972 hasPublicationYear "2021" @default.
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