The Bottom or Downward Tip of a Crevasse Marks the _________

question 19

Multiple Choice

The bottom or downward tip of a crevasse marks the _________.

• A) boundary between parts of the glacier moving by basal sliding and crevassal slip
• B) boundary between the basal sliding and external flowage zones
• C) top of the internal deformation and flowage zone, and the base of the brittle zone of fracture
• D) bottom of the basal sliding zone

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