Evolution of the Moon (Slide Set Number 105)
 
  • Slide 1: Moon 3.8 Billion Years Ago (Imbrium crater: lava flow begins)
  • Slide 2: Moon 3.3 Billion Years Ago (End of Imbrian maria flooding)
  • Slide 3: The Moon Today
  • Slide 4: Before Imbrium Event (Almost 4 billion years ago)
  • Slide 5: Asteroid Impact (3.85 - 4.0 billion years ago)
  • Slide 6: Shock of Asteroid Impact (Beginning of Imbrium crater)
  • Slide 7: Shock of Impact Spreads (Imbrium crater widens)
  • Slide 8: Dust and Heat Subside (Imbrium crater 800 miles wide)
  • Slide 9: Ejecta Covers Older Craters (30 minutes since impact)
  • Slide 10: Lunar Mountains are R:4S of Huge Craters
  • Slide 11: Lava Wells Up - Basin Fills (3.8 billion years ago)
  • Slide 12: Lava Flooding Nearly Complete (3.3 billion years ago)
  • Slide 13: Final Thick Lava Flow (2.5-3.0 billion years ago)
  • Slide 14: Mare Imbrium Today (Note subsequent cratering)
 
 

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