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- Thu Jul 24, 2008 4:54 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: High Cliffs Surrounding Echus Chasma on Mars (23 Jul 2008)
- Replies: 37
- Views: 15133
Chasm
The parallel chasms can also be explained by a deep underground crack in the crust. What caused the crust to seperate can be explained by a number of geological acivities. As sand seeps into the crack the avalanches on the cliff sides widen the trench. No water is needed to explain the larger featur...