Planetary Geology Seminar - Meteorites
Significance of the small junk?
meteorites, planetismals, asteroids, comets.
Types of meteorites?
- stony: chondrites vs. achondrites.
Compositional zonation of asteroids.
Planetismals: e.g. Gaspra and Ida, Phobos and Deimos
Discussion question from last time? What processes can
modify meteoritic material after condensation from the nebulaic gases?
Collecting meteorites in Antarctica.
Shergotites and such?
Readings on cratering for next time:
- pages 77-89 in text.
- Silver, L. T., 1982, Introduction; in Silver & Schultz (eds.),
Geological Implications of Impacts and Large Asteroids and comets on the
Earth; GSA Special Paper 190, p. xiii-xix.
Discussion question for next time:
- How can crater density be used to estimate the relative ages of planetary
surfaces, and what are basic assumptions behind this approach?
- How can crater morphology give clues as to the physical and mechanical
make-up of surficial and crustal material?
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