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[[stamped]] 0128 [[/stamped]]

[[sketch of layers]]

--------------|
J = 15'       | 2nd dam at Spring Creek
--------------|
              | I = 60
--------------|
              | H = 15 1/2
--------------|
              | G = 18'
--------------|
              | F = 23'
--------------|
              | E = 30'
--------------|
              | D = 35'
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Platycupfutas | C = 11'
--------------|
  B           | [[equal sign with line through it]] 33'
--------------|
  A  20'      | Coarse calcaremite upper surface forming north wall of gorge
              | just below (last of dam). Saw large Oxoplecia on upper
              | surface.
              | Hesperorthis? 20' +/- Campylorthis?  
--------------|
Covered Shale |        
     90'      |
--------------|         
SS            |
              |