The Bottom or Downward Tip of a Crevasse Marks the ______

question 9

Multiple Choice

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

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

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