LPI Seminar Series
LPI seminars will be held on Thursdays.
LPI seminars are held from 3:30–4:30 p.m. in the Lecture Hall at USRA, 3600 Bay Area Boulevard, Houston, Texas. Refreshments are served at 4:30 p.m. For more information, please contact Martin Schmieder (phone: 281-486-2116; e-mail: email@example.com) or Nick Castle (phone: 281-486-2144; e-mail: firstname.lastname@example.org.) A map of the Clear Lake area is available here. This schedule is subject to revision.
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- Thursday, July 12, 2018 - Lecture Hall, 3:30 PM
Terik Daly, Johns Hopkins
LPI Seminar: When impacts impart: New insights into the delivery of water by impacts
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 potential 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.