8_Craters - Planetary Accretion and Differentiation • What did planets accrete from and how quickly • Why did planets undergo differentiation

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Unformatted text preview: Planetary Accretion and Differentiation • What did planets accrete from, and how quickly? • Why did planets undergo differentiation? • How were elements partitioned during planetary differentiation into cores, mantles, and crusts? • How can we use the sizes, masses, and shapes of planets to model the chemical and mineralogical compositions of their interiors? • What information can seismic data provide that other kinds of measurements cannot? Impact craters - Morphologies and mechanics Crater Morphologies and Mechanics • What are the morphologic differences between simple and complex craters? • What happens during the contact, excavation, and modification stages of crater formation? • How do multi-ring basins form? • How do the various crater morphologies scale with crater size and with planetary gravity field? • How does the transient cavity differ from the final crater? • What portions of the target are ejected, melted, or otherwise modified, and how are they distributed in and around the final crater? • What other kinds of modifications are seen in huge lunar craters? Impact energies and consequences The kinetic energy of a bolide depends on its mass and velocity, KE = 1/2 mv 2 ....
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This note was uploaded on 11/10/2011 for the course GEOL 380 taught by Professor Mcsween during the Spring '11 term at University of Tennessee.

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8_Craters - Planetary Accretion and Differentiation • What did planets accrete from and how quickly • Why did planets undergo differentiation

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