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Graph of Slope per Geologic Unit
Histogram of average slope on individual units.
Histogram of average slope on individual units.

Units subdivided into:

  1. (1) Wall rock: layered and undivided.
  2. (2) Plateau rock.
  3. (3) Older interior deposits: resistant (near top), fluted, layered, and undivided.
  4. (4) Younger interior deposit: edged,
  5. (5) Landslide deposits: coarse and undivided.
  6. (6) Floor deposits: smooth, hummocky, fractured, dark.
  7. (7) Other units: materials of craters and knobs.
The slopes were measured using ARC-INFO software. The steepest unit is layered wall rock, followed by wall rock and fluted materials.