Mt. Bonnell / Shoal Creek Field Trip

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Last Modified: 08/20/09

Mt. Bonnell Field Trip Stop

Click here to download Mt. Bonnell / Shoal Creek Field trip text (Word 6.0 format)

[Colorado river before relative sea level drop]
 
[Downcutting of Colorado River after relative sea level drop]
   
Stair-step topography in Glen Rose Limestone at Mt. Bonnell Colorado River (looking south across the fault) at Mt. Bonnell

 

 

Shoal Creek Field Trip Stop

[Deposition of Shale]  
   
[Deposition of Limestone]  
   
[Regional Uplift above sea level]  
   
[Normal Faulting]
  Fault gouge in Buda Limestone at Shoal Creek fault
[Colorado river system bevels topography]  
   
[Sea level drops (or renewed regional uplift)]
  Slickensides on fault plane in Buda Limestone
[Downcutting of Modern Shoal Creek channel]  

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