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Publication . Article . 2018

The delivery of water by impacts from planetary accretion to present

Daly, R. Terik; Schultz, Peter H.;
Open Access   English  
Published: 01 Apr 2018 Journal: Science Advances, volume 4, issue 4 (eissn: 2375-2548, Copyright policy )
Publisher: American Association for the Advancement of Science
Dynamical models and observational evidence indicate that water-rich asteroids and comets deliver water to objects throughout the solar system, but the mechanisms by which this water is captured have been unclear. New experiments reveal that impact melts and breccias capture up to 30% of the water carried by carbonaceous chondrite–like projectiles under impact conditions typical of the main asteroid belt impact and the early phases of planet formation. This impactor-derived water resides in two distinct reservoirs: in impact melts and projectile survivors. Impact melt hosts the bulk of the delivered water. Entrapment of water within impact glasses and melt-bearing breccias is therefore a plausible source of hydration features associated with craters on the Moon and elsewhere in the solar system and likely contributed to the early accretion of water during planet formation.
Impact melts and breccias trap surprisingly large quantities of water carried by carbonaceous chondrite–like impactors.
Subjects by Vocabulary

Microsoft Academic Graph classification: Observational evidence Accretion (astrophysics) Asteroid Astrobiology Solar System Asteroid belt Impact crater Breccia Geology Planet


Research Article, Research Articles, SciAdv r-articles, Planetary Science, Multidisciplinary

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Funded by
NSF| Graduate Research Fellowship Program
  • Funder: National Science Foundation (NSF)
  • Project Code: 1058262
  • Funding stream: Directorate for Education & Human Resources | Division of Graduate Education
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